Language：English   Publishing type：Research paper (scientific journal)  

OBJECTIVE: To compare the incidence of hypotension between remimazolam and sevoflurane under general anesthesia for cardiac catheterization in patients with congenital heart disease. DESIGN: Retrospective observational study. SETTING: A single university hospital with 300 pediatric cardiac catheterizations by general anesthesia performed annually. PARTICIPANTS: Patients younger than 15 years who underwent cardiac catheterization under general anesthesia between March 1, 2021, and December 31, 2022. Exclusion criteria were general anesthesia maintained with other than remimazolam or sevoflurane, receipt of remifentanil, American Society of Anesthesiologists score 4 or 5, emergency procedures, and no direct arterial pressure measurement. INTERVENTIONS: General anesthesia was maintained with remimazolam or sevoflurane. MEASUREMENTS AND MAIN RESULTS: A total of 309 patients were analyzed, including 28 in the remimazolam group and 281 in the sevoflurane group. Propensity score matching adjusted for confounding factors resulted in 28 patients in each arm, with no apparent differences in background factors. Hypotension was defined as a time-averaged area > 1, in which systolic arterial pressure fell below 80% of the baseline from the start of anesthesia to the end of procedure. The significance level was set at P < .05. The incidence of hypotension was 39.3% in the remimazolam arm and 46.4% in the sevoflurane arm, with no significant difference (P = .79), although the ratio of the median systolic arterial pressure to the baseline value was significantly higher in the remimazolam arm (91.4 ± 15.2% vs 83.2 ± 11.4% in the sevoflurane arm; P = .03). CONCLUSIONS: Remimazolam was not associated with a lower incidence of hypotension compared to sevoflurane during pediatric cardiac catheterization for congenital heart disease while maintaining significantly higher blood pressure overall.

DOI： 10.1053/j.jvca.2024.08.038

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DOI： 10.1016/j.jgo.2024.101837

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

小児の長期にわたる鎮静は,薬剤耐性や医原性離脱症候群(iatrogenic withdrawal syndrome,IWS)を引き起こし,管理に難渋する場合がある。患者は14歳,男児。劇症型心筋炎と診断され左心補助人工心臓を必要とし,鎮痛鎮静薬は高用量かつ長期間投与となった。抜管に向けてIWS発症回避のため薬剤漸減の必要があったが,その過程での安全な管理のために抜管までは鎮静度の維持が必要と考えた。ミダゾラムとフェンタニルは12時間ごとに5%ずつ減量し,その間は適応外使用としてケタミン,イソフルラン,プロポフォールを順に投与し,鎮静度を維持した。プロポフォール中止後は速やかに覚醒が得られたため抜管し,ミダゾラム,フェンタニル中止後にデクスメデトミジンを漸減終了した。経過中はプロポフォール注入症候群,IWS,悪性高熱症を疑う所見を認めなかった。(著者抄録)

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2024&ichushi_jid=J02874&link_issn=&doc_id=20240719470006&doc_link_id=20240719470001&url=http%3A%2F%2Fsearch.jamas.or.jp%2Flink%2Fbc%2F20240719470001&type=jamaslink&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F99999_1.gif

Language：Japanese   Publisher：(一社)日本ペインクリニック学会  

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Language：Japanese   Publisher：(一社)日本ペインクリニック学会  

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Language：English   Publishing type：Research paper (scientific journal)  

BACKGROUND: Perioperative oral management contributes to the prevention of dental/systemic complications. However, a professional dental checkup before surgery is generally not performed and relies on the patient's answer to a simple question by medical professionals other than dentists: "Do you have any concerns regarding your mouth related to undergoing surgery?" Here, we evaluated the sensitivity and specificity of this question for predicting perioperative oral health problems in patients with primary esophageal and primary lung cancer. METHODS: We performed an oral cavity check in all patients before scheduled surgery for primary esophageal and lung cancer. A total of 183 patients were enrolled (M, 112; F, 71; 24-88 years, median, 69 years), consisting of 61 with primary esophageal cancer (M, 46; F, 15; 24-85 years, median, 69 years) and 122 with primary lung cancer (M, 66; F; 56; 33-88 years, median, 69 years). All subjects provided a response to this question, and an oral cavity check was performed by dentists. The sensitivity and specificity of this question for detecting oral health problems were evaluated retrospectively. RESULTS: Overall sensitivity and specificity for detecting oral health problems were 0.263 and 0.898, respectively. There were no significant differences by sex or disease (primary esophageal or lung cancer). CONCLUSION: This simple question has low sensitivity but high specificity for detecting oral health problems. Although challenging to detect surgical patients with oral health problems by simply asking questions, the results indicated that patients with oral complaints are more likely to have problems during surgery.

DOI： 10.1186/s13741-024-00394-8

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Language：Japanese   Publisher：(NPO)日本医工学治療学会  

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PURPOSE: The aims of this study were (1) to determine the associations of cardioplegic solutions with postoperative main strong ion difference (mSID), which is the difference between sodium ion concentration and chloride ion concentration ([Cl-]) and (2) to determine the associations of cardioplegic solutions with markers of organ dysfunction. METHODS: In this retrospective cohort study, patients aged <5 years who underwent cardiac surgery in a tertiary teaching hospital were included. Patients were classified on the basis of the type of cardioplegic solution: modified del Nido cardioplegia (mDNC) and conventional cardioplegia (CC). The effects of mDNC on postoperative mSID and markers of organ functions were examined using propensity-matched analysis. RESULTS: A total of 500 cases were included. mDNC solution was used in 163 patients (32.6%). After propensity score matching, patients in the mDNC group (n = 152) had significantly higher minimum mSID [28 (26, 30) mEq/L vs. 27 (25, 29) mEq/L, p = 0.02] and lower maximum [Cl-] [112 (109, 114) mEq/L vs. 113 (111, 117) mEq/L, p < 0.001] than patients in the CC group (n = 304). The incidences of low mSID and hyperchloremia in the mDNC group were significantly lower than those in the CC group (63.8 vs. 75.7%, p = 0.01 and 63.2 vs. 79.3%, p < 0.001, respectively). There was no significant difference in the incidence of postoperative acute kidney injury and B-type natriuretic peptide level between the two groups. CONCLUSION: The use of modified del Nido cardioplegia may reduce the incidence of abnormal mSID and hyperchloremia compared with the use of a chloride-rich cardioplegic solution.

DOI： 10.1007/s00540-023-03306-0

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DOI： 10.1177/09727531231224141

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We analyzed the correlation between the duration of electroencephalogram (EEG) recovery and histological outcome in rats in the acute stage of subarachnoid hemorrhage (SAH) to find a new predictor of the subsequent outcome. SAH was induced in eight rats by cisternal blood injection, and the duration of cortical depolarization was measured. EEG power spectrums were given by time frequency analysis, and histology was evaluated. The appropriate frequency band and recovery percentage of EEG (defined as EEG recovery time) to predict the neuronal damage were determined from 25 patterns (5 bands × 5 recovery rates) of receiver operating characteristic (ROC) curves. Probit regression curves were depicted to evaluate the relationships between neuronal injury and duration of depolarization and EEG recovery. The optimal values of the EEG band and the EEG recovery time to predict neuronal damage were 10-15 Hz and 40%, respectively (area under the curve [AUC]: 0.97). There was a close relationship between the percentage of damaged neurons and the duration of depolarization or EEG recovery time. These results suggest that EEG recovery time, under the above frequency band and recovery rate, may be a novel marker to predict the outcome after SAH.

DOI： 10.1038/s41598-024-52527-0

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BACKGROUND: Epidural analgesia (EDA) is a main modality for postoperative pain relief in major open abdominal surgery within the Enhanced Recovery After Surgery protocol. However, it remains unclear whether EDA is an imperative modality in laparoscopic gastrectomy (LG). This study examined non-inferiority of patient-controlled intravenous analgesia (PCIA) to EDA in terms of postoperative pain and recovery in patients who underwent LG. METHODS: In this open-label, non-inferiority, parallel, individually randomized clinical trial, patients who underwent elective LG for gastric cancer were randomized 1:1 to receive either EDA or PCIA after surgery. The primary endpoint was pain score using the Numerical Rating Scale at rest 24 h after surgery, analysed both according to the intention-to-treat (ITT) principle and per protocol. The non-inferiority margin for pain score was set at 1. Secondary outcomes were postoperative parameters related to recovery and adverse events related to analgesia. RESULTS: Between 3 July 2017 and 29 September 2020, 132 patients were randomized to receive either EDA (n = 66) or PCIA (n = 66). After exclusions, 64 patients were included in the EDA group and 65 patients in the PCIA group for the ITT analysis. Pain score at rest 24 h after surgery was 1.94 (s.d. 2.07) in the EDA group and 2.63 (s.d. 1.76) in the PCIA group (P = 0.043). PCIA was not non-inferior to EDA for the primary endpoint (difference 0.69, one side 95% c.i. 1.25, P = 0.184) in ITT analysis. Postoperative parameters related to recovery were similar between groups. More EDA patients (21 (32.8%) versus 1 (1.5%), P < 0.001) developed postoperative hypotension as an adverse event. CONCLUSIONS: PCIA was not non-inferior to EDA in terms of early-phase pain relief after LG.Registration number: UMIN000027643 (https://www.umin.ac.jp/ctr/index-j.htm).

DOI： 10.1093/bjsopen/zrad161

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Remimazolam is a new ultrashort-acting benzodiazepine sedative, the use of which has not been reported for pediatric cardiac surgery. This case report describes the use of remimazolam in a 6-year-old girl who underwent minimally invasive cardiac surgery with right-sided thoracotomy for an atrial septal defect. Under electroencephalographic monitoring, remimazolam (2-4 mg kg-1 h-1) and remifentanil (0.05 μg kg-1 min-1) were administered with an intercostal nerve block during the procedure. The patient awoke and was extubated promptly after surgery, without any serious adverse events, including intraoperative awareness. Remimazolam may be a viable option for general anesthesia during pediatric cardiac surgery.

DOI： 10.1213/XAA.0000000000001735

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BACKGROUND/AIM: The aim of the present study was to clarify the clinical impact of prehabilitation by the perioperative management center (PERIO) at our hospital in severely frail octogenarians with colorectal cancer. PATIENTS AND METHODS: We compared the clinicopathological characteristics of octogenarians who underwent surgery for colorectal cancer before the establishment of PERIO intervention (Control group) with those who received prehabilitation (PERIO group). All patients were classified as American Society of Anesthesiologists (ASA) class 3 or higher. The primary outcome was the incidence of postoperative complications. RESULTS: There were 21 patients in the Control group and 19 patients in the PERIO group. Operative time was significantly longer in the PERIO group (Control group, 200 min vs. PERIO group, 230 min; p=0.03) and blood loss was significantly higher in the PERIO group (Control group, 5 ml vs. PERIO group, 30 ml; p=0.02). Postoperative complications occurred in 10 patients (47.6%) in the Control group and 3 patients (15.8%) in the PERIO group and were significantly lower in the PERIO group (p=0.03). Postoperative hospital stay was 13 days (range=7-31 days) in the Control group and 11 days (range=8-70 days) in the PERIO group (p=0.39). The rate of discharge directly to home was 81% in the Control group and 93.3% in the PERIO group (p=0.29). CONCLUSION: In frail octogenarians with colorectal cancer of ASA class 3 or higher, the incidence of postoperative complications was significantly lower after PERIO intervention.

DOI： 10.21873/anticanres.16762

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：English  

DOI： 10.1186/s12871-023-02323-6

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Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)  

Hemolysis is a complication of cardiopulmonary bypass (CPB). Carboxyhemoglobin (COHb) and methemoglobin (MetHb) were suggested as potential hemolysis biomarkers. This retrospective study was based on a prospective registry aimed to determine the association of COHb and MetHb levels with hemolysis in pediatric patients <4 years old who underwent cardiac surgery with CPB. Plasma-free hemoglobin (PFH), COHb, and MetHb levels were measured before CPB; every 30 minutes during CPB; and on postoperative days 1, 2, and 3. Patients were classified into hemolysis and nonhemolysis groups based on the maximum PFH levels during CPB. A total of 193 patients were included. No significant difference was observed in the maximum COHb levels during CPB (COHbCPB) between the hemolysis and nonhemolysis groups (1.2% [interquartile range {IQR} 0.9-1.4%] vs. 1.1% [IQR: 0.9-1.4%]; p = 0.17). The maximum MetHb levels during CPB (MetHbCPB) were significantly higher in the hemolysis group than in the nonhemolysis group (1.3% [IQR: 1.1-1.5%] vs. 1.2% [IQR: 1.0-1.4%]; p = 0.007). Areas under the receiver operating curves of COHbCPB and MetHbCPB were 0.557 (95% confidence interval: 0.475-0.640) and 0.615 (95% confidence interval: 0.535-0.695), respectively. Therefore, the predictive ability of both hemolysis biomarkers during CPB is limited.

DOI： 10.1097/MAT.0000000000002044

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Authorship：Last author,　Corresponding author   Language：Japanese   Publisher：日本手術医学会  

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Authorship：Last author   Language：Japanese   Publisher：(一社)日本小児麻酔学会  

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Language：Japanese   Publisher：(一社)日本小児麻酔学会  

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Language：English   Publishing type：Research paper (scientific journal)  

Elderly patients are at higher risk of postoperative hypoxemia due to their decreased respiratory function. The aim of this study was to investigate the relationship of intraoperative oxygen saturation (SpO2) and end-expiratory carbon dioxide (ETCO2) values with postoperative hypoxemia in elderly patients. The inclusion criteria were: 1) patients aged≥75 years; 2) underwent general anesthesia in non-cardiac surgery; 3) operative time longer than two hours; and 4) admission to the intensive care unit (ICU) following surgery performed between January and December 2019. Intraoperative SpO2 and ETCO2 values were collected every minute for the first two hours during surgery. The 253 patients were divided into two groups: SpO2≥92% and SpO2<92%. The time-weighted averages of intraoperative SpO2 and ETCO2 were used to compare differences between the two groups. The incidence of postoperative hypoxemia was 22.5%. For similar ventilator settings, patients with postoperative hypoxemia had lower intraoperative SpO2 and higher ETCO2 values. Sex, ASA classification, and intraoperative SpO2 were independent risk factors for postoperative hypoxemia. In conclusion, postoperative SpO2<92% was a frequent occurrence (> 20%) in elderly patients who underwent major non-cardiac surgery. Postoperative hypoxemia was associated with low intraoperative SpO2 and relatively higher ETCO2.

DOI： 10.18926/AMO/65976

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Authorship：Last author   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

DOI： 10.1007/s00540-023-03256-7

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Other Link： https://link.springer.com/article/10.1007/s00540-023-03256-7/fulltext.html

Authorship：Last author   Language：Japanese   Publisher：(NPO)日本緩和医療学会  

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Authorship：Last author   Language：Japanese   Publisher：克誠堂出版  

DOI： 10.18916/masui.2023080014

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Authorship：Last author   Language：Japanese   Publisher：(株)文光堂  

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BACKGROUND: Cardiopulmonary resuscitation (CPR) may not be sufficient to halt the progression of brain damage. Using extracellular glutamate concentration as a marker for neuronal damage, we quantitatively evaluated the degree of brain damage during resuscitation without return of spontaneous circulation. MATERIALS AND METHODS: Extracellular cerebral glutamate concentration was measured with a microdialysis probe every 2 minutes for 40 minutes after electrical stimulation-induced cardiac arrest without return of spontaneous circulation in Sprague-Dawley rats. The rats were divided into 3 groups (7 per group) according to the treatment received during the 40 minutes observation period: mechanical ventilation without chest compression (group V); mechanical ventilation and chest compression (group VC) and; ventilation, chest compression and brain hypothermia (group VCH). Chest compression (20 min) and hypothermia (40 min) were initiated 6 minutes after the onset of cardiac arrest. RESULTS: Glutamate concentration increased in all groups after cardiac arrest. Although after the onset of chest compression, glutamate concentration showed a significant difference at 2 min and reached the maximum at 6 min (VC group; 284±48 μmol/L vs. V group 398±126 μmol/L, P =0.003), there was no difference toward the end of chest compression (513±61 μmol/L vs. 588±103 μmol/L, P =0.051). In the VCH group, the initial increase in glutamate concentration was suddenly suppressed 2 minutes after the onset of brain hypothermia. CONCLUSIONS: CPR alone reduced the progression of brain damage for a limited period but CPR in combination with brain cooling strongly suppressed increases in glutamate levels.

DOI： 10.1097/ANA.0000000000000838

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BACKGROUND: Body temperature (BT) is thought to have associations with oxygen consumption (VO2). However, there have been few studies in which the association between systemic VO2 and BT in humans was investigated in a wide range of BTs. The aims of this study were 1) to determine the association between VO2 and age and 2) to determine the association between VO2 and BT. METHODS: This study was a retrospective study of patients who underwent surgery under general anesthesia at a tertiary teaching hospital. VO2 was measured by the Dräger Perseus A500 anesthesia workstation (Dräger Medical, Lubeck, Germany). The associations of VO2 with age and BT were examined using spline regression and multivariable regression analysis with a random effect. RESULTS: A total of 7,567 cases were included in this study. A linear spline with one knot shows that VO2 was reduced by 2.1 ml/kg/min with one year of age (p < 0.001) among patients less than 18 years of age and that there was no significant change in VO2 among patients 18 years of age or older (estimate: 0.014 ml/kg/min, p = 0.08). VO2 in all bands of BT < 36.0 °C was not significantly different from VO2 in BT >  = 36 °C and < 36.5 °C. Multivariable linear regression analysis showed that compared with VO2 in BT >  = 36 °C and < 36.5 °C as a reference, VO2 levels were significantly higher by 0.57 ml/kg/min in BT >  = 36.5 °C and < 37 °C (p < 0.001), by 1.8 ml/kg/min in BT >  = 37 °C and < 37.5 °C (p < 0.001), by 3.6 ml/kg/min in BT >  = 37.5 °C and < 38 °C (p < 0.001), by 4.9 ml/kg/min in BT >  = 38 °C and < 38.5 °C (p < 0.001), and by 5.7 ml/kg/min in BT >  = 38.5 °C (p < 0.001). The associations between VO2 and BT were significantly different among categorized age groups (p = 0.03). CONCLUSIONS: VO2 increases in parallel with increase in body temperature in a hyperthermic state but remains constant in a hypothermic state. Neonates and infants, who have high VO2, may have a large systemic organ response in VO2 to change in BT.

DOI： 10.1186/s12871-023-02182-1

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BACKGROUND: This study aimed to determine whether nutritional education, from the preoperative to postoperative period, and nutritional management designed to improve nutritional status alone, could improve patients' health-related self-management and nutritional management skills during the postoperative period. METHODS: We evaluated 101 hospitalised patients with oesophageal cancer who underwent surgery between 2015 and 2016 and received perioperative nutritional education (PERIO-N). The control group included 52 patients who underwent surgery between 2014 and 2015 and were supported only by normal interventions according to the Enhanced Recovery After Surgery protocol. The PERIO-N group paid specific attention to nutrition risk screening, nutrition assessment, nutrition monitoring, and lifestyle education. RESULTS: The patients in the PERIO-N group were 1.8 times more likely to be able to consume food orally than the control group (p=0.010). In the PERIO-N group, 50.5% of the patients could orally consume food, 42.6% received a combination of oral and enteral nutrition, and 6.9% only underwent enteral nutrition. In comparison, in the control group, 28.8% of the patients could orally consume food, 53.8% received a combination of oral and enteral nutrition, and 17.3% were only administered enteral nutrition (p=0.004). In addition, patients in the PERIO-N group were discharged at a 1.5 times higher rate than those in the control group (p=0.027). The readmission rate for malnutrition within 3 months was 4% in the PERIO group (5.4% for home discharge only) and 5.8% in the control group (10.5% for home discharge only) (p=0.61). CONCLUSION: This study found that perioperative nutrition education in patients who underwent oesophageal cancer surgery led to increase in the amount of oral intake at discharge. Moreover, the group that received nutrition education did not have an increased probability of hospitalisation due to the risk of malnutrition within 3 months after discharge.

DOI： 10.31557/APJCP.2023.24.6.2037

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Continuous renal replacement therapy (CRRT) is widely used to control fluid balance, but the optimal fluid balance to improve the prognosis of patients remains debated. Appropriate fluid management may depend on hemodynamic status. We investigated the association between 90-day mortality and fluid balance/mean arterial pressure (MAP) in patients receiving CRRT. This single-center retrospective study was conducted between May 2018 and March 2021. Based on the cumulative fluid balance at 72 h after initiation of CRRT, the cases were divided into negative (< 0 mL) and positive (> 0 mL) fluid balance groups. Ninety-day mortality was higher in the positive fluid balance group (p=0.009). At 4 h before and after CRRT initiation, the mean MAP was lower in the positive fluid balance group (p<0.05). After multivariate cox adjustment, 72-h positive fluid balance was independently associated with 90-day mortality (p=0.004). In addition, the cumulative fluid balance was associated with 90-day mortality (p<0.05) in cases without shock, high APACHE II score, sepsis, dialysis dependence, or vasopressor use. A 72-h positive fluid balance was associated with 90-day mortality in patients receiving CRRT.

DOI： 10.18926/AMO/65491

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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PURPOSE: This study investigated the incidence of postoperative pulmonary complications (PPC) when high-flow nasal cannula therapy (HFNC) is used prophylactically after pediatric cardiac surgery, and evaluated its efficacy. METHODS: This was a single-arm prospective interventional study that was conducted in a tertiary teaching hospital with eight beds in the pediatric cardiac ICU after approval by the Ethics Committee. One-hundred children under the age of 48 months who were scheduled for cardiac surgery for congenital heart disease were recruited. HFNC was used for 24 h after extubation at a 2 L/kg/min flow rate. The primary outcome was the incidence of PPC within 48 h after extubation. PPC was defined as atelectasis and acute respiratory failure meeting certain criteria. We considered prophylactic HFNC as effective if the prevalence of PPC was < 10%, based on previous reports of reintubation rates of 6%-9% after pediatric cardiac surgery. RESULTS: A total of 91 patients were finally included in the analysis. The incidence of PPC within 48 h after extubation was 18.7%, whereas atelectasis was observed in 13.2%, and acute respiratory failure in 8.8%. Reintubation rate within 48 h after extubation was 0%. CONCLUSIONS: We found the incidence of PPC with prophylactic HFNC after planned extubation after pediatric cardiac surgery. However, the incidence was > 10%; therefore, we could not demonstrate its efficacy in this single-arm study. Further studies are needed to investigate whether the HFNC could be adapted as first-line oxygen therapy after pediatric cardiac surgery.

DOI： 10.1007/s00540-023-03187-3

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OBJECTIVES: The authors investigated the management of neuromuscular blocking agents (NMBAs) for pediatric patients after cardiac surgery, and compared the outcomes of patients who received prophylactic NMBA (pNMBA) infusions and patients without pNMBA infusions. DESIGN: A retrospective cohort study. SETTING: At a tertiary teaching hospital. PARTICIPANTS: Patients younger than 18, with congenital heart disease, who underwent cardiac surgery. INTERVENTIONS: Commencement of NMBA infusion in the first 2 hours after surgery MEASUREMENTS AND MAIN RESULTS: The primary endpoint was a composite of one or more of the following major adverse events (MAEs) that occurred within 7 days after surgery: death from any cause, a circulatory collapse that needed cardiopulmonary resuscitation, and requirement for extracorporeal membrane oxygenation. The secondary endpoints included the total duration of mechanical ventilation for the first 30 days after surgery. A total of 566 patients were included in this study. The MAEs occurred in 13 patients (2.3%). An NMBA was commenced within 2 hours after surgery in 207 patients (36.6%). There were significant differences in the incidence of postoperative MAEs between the pNMBA group and the non-pNMBA group (5.3% v 0.6%; p < 0.001). In multivariate regression models, pNMBA infusion was not significantly associated with the incidence of MAEs (odds ratio: 1.79, 95% CI: 0.23-13.93, p = 0.58), but was significantly associated with prolonged mechanical ventilation by 3.85 days (p < 0.001). CONCLUSIONS: Postoperative prophylactic neuromuscular blockade after cardiac surgery can be associated with prolonged mechanical ventilation, but has no association with MAEs among pediatric patients with congenital heart disease.

DOI： 10.1053/j.jvca.2023.02.030

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Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

Abstract

Background

Malignant peripheral nerve sheath tumors (MPNSTs) are aggressive soft tissue sarcomas which commonly arise from neurofibromatosis type 1. Lung metastases of the tumors are well-known, but intraoperative cerebral tumor embolisms of MPNSTs have not been reported in literature.

Case presentation

A 52-year-old female patient with neurofibromatosis type 1 underwent a right lung partial resection for lung tumors. She was extubated after adequate recovery of spontaneous breathing; however, she could not respond to verbal commands. In the intensive care unit, her neurological examination revealed conjugate eye deviation, right hemiparalysis, and aphasia. Magnetic resonance imaging revealed acute cerebral ischemia, so she underwent an endovascular thrombectomy. The histopathological diagnosis of emboli was a MPNST, which was identical with that of the resected lung tumor.

Conclusion

We report the first case of delayed emergence caused by a cerebral tumor embolism of MPNST during partial lung resection.

DOI： 10.1186/s40981-023-00614-y

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Language：English   Publishing type：Research paper (scientific journal)  

Regional cerebral oxygen saturation (ScO2) determined by near-infrared spectroscopy, monitoring both arterial and venous blood oxygenation of the brain, could reflect the balance between oxygen delivery and consumption. The aim of this study was to determine the predictabilities of ScO2 and estimated oxygen extraction ratio (eO2ER) with outcomes in infants with congenital heart disease (CHD). This study was a two-center, retrospective study of patients at 12 months of age or younger with CHD who underwent cardiac surgery. The primary outcome was a composite of one or more major adverse events (MAEs) after surgery: death from any cause, circulatory collapse that needed cardiopulmonary resuscitation, and requirement for extracorporeal membrane oxygenation. Based on the assumptions of arterial to venous blood ratio, eO2ER was calculated. A total of 647 cases were included in this study. MAEs occurred in 16 patients (2.5%). There were significant differences in post-bypass ScO2 [46.61 (40.90, 52.05) vs. 58.52 (51.52, 66.08), p < 0.001] and post-bypass eO2ER [0.66 (0.60, 0.78) vs. 0.52 (0.43, 0.61), p < 0.001] between patients with MAEs and patients without MAEs. Area under the receiver operating curve (AUROC) of post-bypass ScO2 was 0.818 (95% confidence interval: 0.747-0.889), AUROC of post-bypass eO2ER was 0.783 (0.697-0.870) and AUROC of post-bypass maximum serum lactate level was 0.635 (0.525-0.746). Both ScO2 and eO2ER, especially after weaning off bypass, are acceptable predictive markers for predicting MAEs after cardiac surgery in infants.(227 words).

DOI： 10.1007/s00246-023-03158-1

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Language：Japanese   Publisher：医学図書出版(株)  

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Publishing type：Research paper (scientific journal)   Publisher：Public Library of Science (PLoS)  

Background

Few sepsis biomarkers accurately predict severity and mortality. Previously, we had reported that first-day histidine-rich glycoprotein (HRG) levels were significantly lower in patients with sepsis and were associated with mortality. Since the time trends of HRG are unknown, this study focused on the time course of HRG in patients with sepsis and evaluated the differences between survivors and non-survivors.

Methods

A multicenter prospective observational study was conducted involving 200 patients with sepsis in 16 Japanese hospitals. Blood samples were collected on days 1, 3, 5, and 7, and 28-day mortality was used for survival analysis. Plasma HRG levels were determined using a modified quantitative sandwich enzyme-linked immunosorbent assay.

Results

First-day HRG levels in non-survivors were significantly lower than those in survivors (mean, 15.7 [95% confidence interval (CI), 13.4–18.1] vs 20.7 [19.5–21.9] μg/mL; P = 0.006). Although there was no time × survivors/non-survivors interaction in the time courses of HRG (P = 0.34), the main effect of generalized linear mixed models was significant (P &lt; 0.001). In a univariate Cox proportional hazards model with each variable as a time-dependent covariate, higher HRG levels were significantly associated with a lower risk of mortality (hazard ratio, 0.85 [95% CI, 0.78–0.92]; P &lt; 0.001). Furthermore, presepsin levels (P = 0.02) and Sequential Organ Function Assessment scores (P &lt; 0.001) were significantly associated with mortality. Harrell’s C-index values for the 28-day mortality effect of HRG, presepsin, procalcitonin, and C-reactive protein were 0.72, 0.70, 0.63, and 0.59, respectively.

Conclusions

HRG levels in non-survivors were consistently lower than those in survivors during the first seven days of sepsis. Repeatedly measured HRG levels were significantly associated with mortality. Furthermore, the predictive power of HRG for mortality may be superior to that of other singular biomarkers, including presepsin, procalcitonin, and C-reactive protein.

DOI： 10.1371/journal.pone.0283426

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Language：English   Publishing type：Research paper (scientific journal)  

BACKGROUND: The present retrospective study was carried out to determine the incidence of unrecognized cardiac surgery-associated acute kidney injury (CSA-AKI) due to infrequency of serum creatinine (SCr) measurements in pediatric cardiac patients and to assess the association between unrecognized CSA-AKI and clinical outcomes. METHODS: This study was a single-center, retrospective study of pediatric patients who underwent cardiac surgery. Patients were diagnosed with CSA-AKI based on SCr measurements, and unrecognized CSA-AKI was defined under the assumptions that there had been only one or two SCr measurements within 48 h after surgery: CSA-AKI unrecognized by one SCr measurement (AKI-URone), CSA-AKI unrecognized by two SCr measurements (AKI-URtwo), and CSA-AKI recognized by one and two SCr measurements (AKI-R). The change of SCr from baseline to postoperative day 30 (delta SCr30d) was assessed as a surrogate of kidney recovery. RESULTS: In a total of 557 cases, 313 patients (56.2%) were diagnosed with CSA-AKI, 188 (33.8%) of whom had unrecognized CSA-AKI. Delta SCr30d in the AKI-URtwo group and delta SCr30d in the AKI-URone group was not significantly different from delta SCr30d in the non-AKI group (p = 0.67 and p = 0.79, respectively). There were significant differences in the durations of mechanical ventilation, serum B-type natriuretic peptide levels, and lengths of stay in hospital between the non-AKI group and the AKI-URtwo group and between the non-AKI group and the AKI-URtwo group. CONCLUSIONS: Unrecognized CSA-AKI due to infrequent SCr measurements is not rare and is associated with prolonged mechanical ventilation, high postoperative BNP level, and prolonged length of stay in hospital. A higher resolution version of the Graphical abstract is available as Supplementary information.

DOI： 10.1007/s00467-023-05925-x

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Dexmedetomidine (DEX) can reduce lung injury in a hemorrhagic shock (HS) resuscitation (HSR) model in rats by inhibiting inflammation. Here, we aimed to investigate if these effects of DEX are due to autophagy activation. Therefore, we established HSR rat models and divided them into four groups. HS was induced using a blood draw. The rats were then resuscitated by reinjecting the drawn blood and saline. The rats were sacrificed 24 h after resuscitation. Lung tissues were harvested for histopathological examination, determination of wet/dry lung weight ratio, and detection of the levels of autophagy-related marker proteins LC3, P62, Beclin-1, and the ATG12-ATG5 conjugate. The morphological findings of hematoxylin and eosin staining in lung tissues and the pulmonary wet/dry weight ratio showed that lung injury improved in HSR + DEX rats. However, chloroquine (CQ), an autophagy inhibitor, abolished this effect. Detecting the concentration of autophagy-related proteins showed that DEX administration increased LC3, ATG12-ATG5, and Beclin-1 expression and decreased P62 expression. The expression levels of these proteins were similar to those in the HSR group after CQ + DEX administration. In summary, DEX induced autophagic activation in an HSR model. These findings suggest that DEX administration partially ameliorates HSR-induced lung injury via autophagic activation.

DOI： 10.1038/s41598-023-31483-1

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BACKGROUND: Postpartum hemolysis, elevated liver enzymes, and low platelet count (HELLP) syndrome is more difficult to treat than HELLP syndrome during pregnancy. We describe a case of postpartum HELLP syndrome that responded to plasma exchange (PE) therapy. CASE PRESENTATION: A 30-year-old primipara woman was hospitalized for gestational hypertension at 33 weeks of gestation and underwent an emergent cesarean section at 36 weeks and 6 days of gestation due to rapidly progressing pulmonary edema. After delivery, liver dysfunction and a rapid decrease in platelet count were observed, and the patient was diagnosed with severe HELLP syndrome. She experienced multiple organ failure despite intensive care, and PE therapy was initiated. Her general condition dramatically stabilized within a few hours of PE therapy. CONCLUSION: It is controversial whether PE therapy should be used primarily in the management of HELLP syndrome, but early initiation of PE therapy could be effective for severe HELLP syndrome.

DOI： 10.1186/s40981-023-00602-2

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BACKGROUND: Osler-Weber-Rendu syndrome is characterized by mucocutaneous telangiectasia and arteriovenous malformations in organs. Anesthesia for patients with Osler-Weber-Rendu syndrome is challenging due to complications and physiological changes. CASE PRESENTATION: The case was a 49-year-old female with Osler-Weber-Rendu syndrome, multiple pulmonary arteriovenous malformations and pheochromocytoma who presented for femoral bone head fracture with metastatic adenocarcinoma. The patient was scheduled to undergo bone tumor resection and artificial bone replacement, being positioned laterally with a planned operation duration of 5 h. Anesthesia was managed with spinal and epidural anesthesia, combined with sedation by sevoflurane using a supraglottic airway (SGA) device under spontaneous breathing. Her intraoperative and postoperative courses were uneventful. CONCLUSION: Neuraxial anesthesia combined with general anesthesia using an SGA device to maintain spontaneous ventilation in order to minimize the risk of rupture of pulmonary arteriovenous malformations could be an option.

DOI： 10.1186/s40981-023-00600-4

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Publisher：株式会社医学書院  

DOI： 10.11477/mf.1409210879

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INTRODUCTION: Previous studies on chemotherapy-induced peripheral neuropathy (CIPN) have focused on neuronal damage. Although some studies have revealed that the fascia is an important sensory organ, currently, we do not know about chemotherapy drug-induced fascial dysfunction. OBJECTIVES: This study aimed to explore the fascia as a nonneural cause of mechanical hypersensitivity in CIPN by investigating the expression of hyaluronic acid synthase (HAS) and histology of the fascia in an animal model of CIPN. METHODS: Rats were intraperitoneally administered with vincristine (VCR). Mechanical hypersensitivities of the hind paw and the anterior tibial muscle were assessed. The expression of HAS mRNA in the fascia of the anterior tibial muscles was quantitated using reverse transcription polymerase chain reaction. Immunohistochemistry was also performed for HAS2, hyaluronic acid-binding protein, and S100A4 in the fascia. RESULTS: Vincristine administration significantly decreased mechanical withdrawal thresholds in the hind paw and the anterior tibial muscle after day 3. Quantitative polymerase chain reaction showed significant downregulation of HAS mRNAs in the fascia of VCR-treated rats. Immunohistochemical analysis showed that the number of cells with strong HAS2 immunoreactivity, classified as fasciacytes by morphology and colocalized marker S100A4, decreased significantly in the VCR group. CONCLUSION: Hyaluronic acid plays a critical role in somatic pain sensation. Damaged fascia could be a possible cause of musculoskeletal pain in patients with CIPN. This study suggests that fascia is a nonneural cause and novel therapeutic target for chemotherapy-induced "peripheral neuropathy."

DOI： 10.1097/PR9.0000000000001088

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Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

Abstract

Early brain injury after aneurysmal subarachnoid hemorrhage (SAH) worsens the neurological outcome. We hypothesize that a longer duration of depolarization and excessive release of glutamate aggravate neurological outcomes after SAH, and that brain hypothermia can accelerate repolarization and inhibit the excessive release of extracellular glutamate and subsequent neuronal damage. So, we investigated the influence of depolarization time and extracellular glutamate levels on the neurological outcome in the ultra-early phase of SAH using a rat injection model as Experiment 1 and then evaluated the efficacy of brain hypothermia targeting ultra-early brain injury as Experiment 2. Dynamic changes in membrane potentials, intracranial pressure, cerebral perfusion pressure, cerebral blood flow, and extracellular glutamate levels were observed within 30 min after SAH. A prolonged duration of depolarization correlated with peak extracellular glutamate levels, and these two factors worsened the neuronal injury. Under brain hypothermia using pharyngeal cooling after SAH, cerebral perfusion pressure in the hypothermia group recovered earlier than that in the normothermia group. Extracellular glutamate levels in the hypothermia group were significantly lower than those in the normothermia group. The early induction of brain hypothermia could facilitate faster recovery of cerebral perfusion pressure, repolarization, and the inhibition of excessive glutamate release, which would prevent ultra-early brain injury following SAH.

DOI： 10.1038/s41598-022-14360-1

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Other Link： https://www.nature.com/articles/s41598-022-14360-1

Language：Japanese   Publisher：(一社)日本小児麻酔学会  

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Language：Japanese   Publisher：(一社)日本小児麻酔学会  

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Language：English   Publishing type：Research paper (scientific journal)  

Some pediatric cardiac patients might experience low regional cerebral oxygen saturation (rSO2) during surgery. We investigated whether a pediatric patient's mean arterial pressure (MAP) can affect the rSO2 value during cardiopulmonary bypass (CPB). We retrospectively analyzed the cases of the pediatric patients who underwentcardiac surgery at our hospital (Jan. -Dec. 2019; n=141). At each MAP stage, we constructed line charts through the mean of the rSO2 values corresponding to each MAP and then calculated the correlation coefficients. We next divided the patients into age subgroups (neonates, infants, children) and into cyanotic congenital heart disease (CHD) and acyanotic CHD groups and analyzed these groups in the same way. The analyses of all 141 patients revealed that during CPB the rSO2 value increased with an increase in MAP (r=0.1626). There was a correlation between rSO2 and MAP in the children (r=0.2720) but not in the neonates (r=0.06626) or infants (r=0.05260). Cyanotic CHD or acyanotic CHD did not have a significant effect on the rSO2/MAP correlation. Our analysis demonstrated different patterns of a correlation between MAP and rSO2 in pediatric cardiac surgery patients, depending on age. MAP was positively correlated with rSO2 typically in children but not in neonate or infant patients.

DOI： 10.18926/AMO/64037

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Language：English   Publisher：(一社)日本癌治療学会  

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Language：Japanese   Publisher：(一社)日本小児麻酔学会  

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Language：Japanese   Publisher：(一社)日本小児麻酔学会  

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Language：English   Publisher：(一社)日本癌治療学会  

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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Language：Japanese   Publisher：克誠堂出版(株)  

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Language：Japanese   Publisher：真興交易(株)医書出版部  

無痛分娩に関連した母児の死亡、後遺障害の個別案件が続いたことを受けて、無痛分娩の安全な提供体制の構築が求められている。本邦における無痛分娩普及率は、欧米と比較すると低いが、その割合は着実に増してきている。今後、麻酔科医による無痛分娩の需要は高まっていく可能性があり、産科麻酔を専門としない麻酔科医にとっても無痛分娩に関する最低限の知識は持っておく必要があると思われる。(著者抄録)

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：克誠堂出版(株)  

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Language：English   Publishing type：Research paper (scientific journal)  

BACKGROUND: Decrease in histidine-rich glycoprotein (HRG) was reported as a cause of dysregulation of the coagulation-fibrinolysis and immune systems, leading to multi-organ failure, and it may be a biomarker for sepsis, ventilator-associated pneumonia, preeclampsia, and coronavirus disease 2019. However, the usefulness of HRG in perioperative management remains unclear. This study aimed to assess the usefulness of HRG as a biomarker for predicting postoperative complications. METHODS: This was a single-center, prospective, observational study of 150 adult patients who were admitted to the intensive care unit after surgery. Postoperative complications were defined as those having a grade II or higher in the Clavien-Dindo classification, occurring within 7 days after surgery. The primary outcome was HRG levels in the patients with and without postoperative complications. The secondary outcome was the ability of HRG, white blood cell, C-reactive protein, procalcitonin, and presepsin to predict postoperative complications. Data are presented as number and median (interquartile range). RESULTS: The incidence of postoperative complications was 40%. The HRG levels on postoperative day 1 were significantly lower in patients who developed postoperative complications (n = 60; 21.50 [18.12-25.74] µg/mL) than in those who did not develop postoperative complications (n = 90; 25.46 [21.05-31.63] µg/mL). The Harrell C-index scores for postoperative complications were HRG, 0.65; white blood cell, 0.50; C-reactive protein, 0.59; procalcitonin, 0.73; and presepsin, 0.73. HRG was independent predictor of postoperative complications when adjusted for age, the presence of preoperative cardiovascular comorbidities, American Society of Anesthesiologists Physical Status Classification, operative time, and the volume of intraoperative bleeding (adjusted hazard ratio = 0.94; 95% confidence interval, 0.90-0.99). CONCLUSIONS: The HRG levels on postoperative day 1 could predict postoperative complications. Hence, HRG may be a useful biomarker for predicting postoperative complications.

DOI： 10.1186/s12871-022-01774-7

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BACKGROUND: Endoscopic procedures are rarely performed in children with congenital heart disease (CHD); therefore, the associated complications are unknown. We report an abrupt change in circulatory and respiratory condition during endoscopic injection sclerotherapy for esophageal varices. CASE PRESENTATION: A 9-year-old boy with a history of total anomalous pulmonary venous connection (TAPVC) repair and Fontan procedure for asplenia and a single ventricle with TAPVC underwent endoscopic injection sclerotherapy under general anesthesia for esophageal varices. Systolic blood pressure decreased from 70 to 50 mmHg following a sclerosant injection; a second injection reduced his peripheral oxygen saturation from 93 to 79% secondary to ventilation difficulty. Although we suspected anaphylaxis intraoperatively, postoperative imaging suggested that balloon dilation performed to prevent sclerosing agent leakage caused compression of the pulmonary venous chamber and trachea owing to the anomalous intrathoracic organ anatomy. CONCLUSION: Thorough understanding of the complex anatomy is important before performing endoscopic procedures in children with CHD to preoperatively anticipate possible intraoperative complications and select the optimal therapeutic approach and anesthesia management.

DOI： 10.1186/s40981-022-00538-z

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Publisher：克誠堂出版(株)  

DOI： 10.18916/j01397.2022245832

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Language：Japanese   Publisher：医学図書出版(株)  

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Language：English   Publishing type：Research paper (scientific journal)  

Mirror image pain (MIP) is a type of extraterritorial pain that results in contralateral pain or allodynia. Glutamate transporter-1 (GLT-1) is expressed in astrocytes and plays a role in maintaining low glutamate levels in the synaptic cleft. Previous studies have shown that GLT-1 dysfunction induces neuropathic pain. Our previous study revealed bilateral GLT-1 downregulation in the spinal cord of a spared nerve injury (SNI) rat. We hypothesized that spinal GLT-1 is involved in the mechanism of MIP. We also previously demonstrated noradrenergic GLT-1 regulation. Therefore, this study aimed to investigate the effect of an α1 adrenergic antagonist on the development of MIP. Rats were subjected to SNI. Changes in pain behavior and GLT-1 protein levels in the SNI rat spinal cords were then examined by intrathecal administration of the α1 adrenergic antagonist phentolamine, followed by von Frey test and western blotting. SNI resulted in the development of MIP and bilateral downregulation of GLT-1 protein in the rat spinal cord. Intrathecal phentolamine increased contralateral GLT-1 protein levels and partially ameliorated the 50% paw withdrawal threshold in the contralateral hind paw. Spinal GLT-1 upregulation by intrathecal phentolamine ameliorates MIP. GLT-1 plays a role in the development of MIPs.

DOI： 10.18926/AMO/63719

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Liberation from mechanical ventilation is of great importance owing to related complications from extended ventilation time. In this prospective multicenter study, we aimed to construct a versatile model for predicting extubation outcomes in critical care settings using obtainable physiological predictors. The study included patients who had been extubated after a successful 30 min spontaneous breathing trial (SBT). A multivariable logistic regression model was constructed to predict extubation outcomes (successful extubation without reintubation and uneventful extubation without reintubation or noninvasive respiratory support) using eight parameters: age, heart failure, respiratory disease, rapid shallow breathing index (RSBI), PaO2/FIO2, Glasgow Coma Scale score, fluid balance, and endotracheal suctioning episodes. Of 499 patients, 453 (90.8%) and 328 (65.7%) achieved successful and uneventful extubation, respectively. The areas under the curve for successful and uneventful extubation in the novel prediction model were 0.69 (95% confidence interval (CI), 0.62-0.77) and 0.70 (95% CI, 0.65-0.74), respectively, which were significantly higher than those in the conventional model solely using RSBI (0.58 (95% CI, 0.50-0.66) and 0.54 (95% CI, 0.49-0.60), p = 0.004 and &lt;0.001, respectively). The model was validated using a bootstrap method, and an online application was developed for automatic calculation. Our model, which is based on a combination of generally obtainable parameters, established an accessible method for predicting extubation outcomes after a successful SBT.

DOI： 10.3390/jcm11092520

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

OBJECTIVES: An increasing number of patients visiting the dental office have a growing need for perioperative oral management (POM) to prevent postoperative complications. Therefore, it is necessary to determine which patients should receive preferential POM. This study investigated the dental status of patients scheduled to undergo surgery and addressed the priority for POM. METHODS: This retrospective study included a total of 150 patients who were scheduled to undergo surgery at the Department of Respiratory Surgery (DRS), Department of Neurological Surgery (DNS), Department of Gynecological Surgery (DGS), Department of Breast and Endocrine Surgery (DBES), and Department of Esophageal Surgery (DES) managed by the Perioperative Management Center of Okayama University Hospital. We compared the general and dental status of patients among the five groups. RESULTS: The DES group had significantly fewer teeth than the DBES group (p = 0.012), more severe periodontitis than both the DBES (p = 0.005) and DNS groups (p = 0.020), and poorer molar occlusal support status than both the DBES (p = 0.002) and DGS groups (p = 0.041). The DES group exhibited a significantly higher median age (p = 0.002), a higher ratio of males (p < 0.001), a higher prevalence of malignant tumors (p < 0.001), and higher proportions of smokers (p < 0.001) and drinkers (p < 0.001) than the other groups. CONCLUSION: Patients who underwent surgery at the DES had more dental problems than other surgery patients. Accordingly, these patients should be given the highest priority for POM triage.

DOI： 10.1007/s11748-021-01757-4

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Other Link： https://link.springer.com/article/10.1007/s11748-021-01757-4/fulltext.html

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The issue of tolerance to continuous or repeated administration of opioids should be addressed. The ability of ketamine to improve opioid tolerance has been reported in clinical studies, and its mechanism of tolerance may involve improved desensitization of μ-opioid receptors (MORs). We measured changes in MOR activity and intracellular signaling induced by repeated fentanyl and morphine administration and investigated the effects of ketamine on these changes with human embryonic kidney 293 cells expressing MOR using the CellKey™, cADDis cyclic adenosine monophosphate, and PathHunter® β-arrestin recruitment assays. Repeated administration of fentanyl or morphine suppressed the second MOR responses. Administration of ketamine before a second application of opioids within clinical concentrations improved acute desensitization and enhanced β-arrestin recruitment elicited by fentanyl but not by morphine. The effects of ketamine on fentanyl were suppressed by co-treatment with an inhibitor of G-protein-coupled receptor kinase (GRK). Ketamine may potentially reduce fentanyl tolerance but not that of morphine through modulation of GRK-mediated pathways, possibly changing the conformational changes of β-arrestin to MOR.

DOI： 10.3390/biom12030426

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Delirium is a critical challenge in the intensive care unit (ICU) or high care unit (HCU) setting and is associated with poor outcomes. There is not much literature on how many patients in this setting are assessed for delirium and what tools are used. This study investigated the status of delirium assessment tools of patients in the ICU/HCU. We conducted a multicenter prospective observational study among 20 institutions. Data for patients who were admitted to and discharged from the ICU/HCU during a 1-month study period were collected from each institution using a survey sheet. The primary outcome was the usage rate of delirium assessment tools on an institution- and patient-basis. Secondary outcomes were the delirium prevalence assessed by each institution's assessment tool, comparison of delirium prevalence between delirium assessment tools, delirium prevalence at the end of ICH/HCU stay, and the relationship between potential factors related to delirium and the development of delirium. Result showed that 95% of institutions used the Intensive Care Delirium Screening Checklist (ICDSC) or the Confusion Assessment Method for the ICU (CAM-ICU) to assess delirium in their ICU/HCU, and the remaining one used another assessment scale. The usage rate (at least once during the ICU/HCU stay) of the ICDSC and the CAM-ICU among individual patients were 64.5% and 25.1%, and only 8.2% of enrolled patients were not assessed by any delirium assessment tool. The prevalence of delirium during ICU/HCU stay was 17.9%, and the prevalence of delirium at the end of the ICU/HCU stay was 5.9%. In conclusion, all institutions used delirium assessment tools in the ICU/HCU, and most patients received delirium assessment. The prevalence of delirium was 17.9%, and two-thirds of patients had recovered at discharge from ICU/HCU.Trial registration number: UMIN000037834.

DOI： 10.1038/s41598-022-06106-w

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Language：Japanese   Publishing type：Research paper (scientific journal)  

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Language：English   Publishing type：Research paper (scientific journal)  

BACKGROUND: Perioperative atrial fibrillation (POAF) after non-cardiac surgery is a risk factor for cardiovascular events including stroke and death. The aim of this subanalysis of the MAMACARI study, a multicenter randomized control study on the effectiveness of a bisoprolol transdermal patch for prevention of perioperative myocardial injury in high-risk patients undergoing non-cardiac surgery, was to identify the predictors of POAF after non-cardiac surgery in high-risk patients and to determine changes in blood pressure and heart rate during bisoprolol patch administration in the perioperative period. METHODS AND RESULTS: Patients aged over 60 years with hypertension and a high revised cardiac risk index (≥2) who were scheduled to undergo non-cardiac surgery were randomly assigned to a bisoprolol patch group (n = 120) or a control group (n = 120). We divided the patients into two groups: patients with POAF (POAF group; n = 16) and patients without POAF (non-POAF group; n = 206). Multivariate analysis showed that bisoprolol patch therapy (OR: 0.30, 95% CI: 0.092-0.978) and surgery time of 250 min or more (OR: 4.99, 95% CI: 1.37-18.2) were independently associated with POAF. Although systolic blood pressure did not differ significantly between the two groups throughout the perioperative period, treatment with a bisoprolol patch significantly reduced heart rate throughout the perioperative period compared with that in the control group. CONCLUSIONS: Low dose of a bisoprolol patch in the perioperative period was effective for prevention of POAF after non-cardiac surgery in high-risk patients, while long surgery time was an independent risk factor for POAF. It is expected that low dose of a bisoprolol patch can prevent POAF without causing hypotension.

DOI： 10.1016/j.jjcc.2021.05.001

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Language：Japanese   Publisher：日本老年脳神経外科学会  

過去2年間の80歳以上の超高齢者脊椎脊髄に対する外科治療症例18例(男性11例、女性7例、80～89歳、中央値86歳)を対象に、患者背景、症状、治療、周術期の問題点、対策について検討を行った。初診時は全例が生活に重大な問題を生じており、8例は独歩不能であった。治療は頸椎病変11例全例に頸椎椎弓形成術、胸髄腫瘍1例に腫瘍摘出術、腰椎変性疾患は5例に片側進入両側開窓術、1例に後方腰椎椎体間固定術を行った。譫妄には抑肝散、食欲不振には六君子湯を用いた。術後、重篤な合併症なく17例で症状改善が得られた。

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Lippincott Williams and Wilkins  

Background: Brain ischemia due to disruption of cerebral blood flow (CBF) results in increases in extracellular glutamate concentration and neuronal cell damage. However, the impact of CBF on glutamate dynamics after the loss of the membrane potential remains unknown. Materials and Methods: To determine this impact, we measured extracellular potential, CBF, and extracellular glutamate concentration in the parietal cortex in male Sprague-Dawley rats (n=21). CBF was reduced by bilateral occlusion of the common carotid arteries and exsanguination until loss of extracellular membrane potential was observed (low-flow group), or until CBF was further reduced by 5% to 10% of preischemia levels (severe-low-flow group). CBF was promptly restored 10 minutes after the loss of membrane potential. Histologic outcomes were evaluated 5 days later. Results: Extracellular glutamate concentration in the low-flow group was significantly lower than that in the severe-low-flow group. Moreover, increases in extracellular glutamate concentration exhibited a linear relationship with decreases in CBF after the loss of membrane potential in the severe-low-flow group, and the percentage of damaged neurons exhibited a dose-response relationship with the extracellular glutamate concentration. The extracellular glutamate concentration required to cause 50% neuronal damage was estimated to be 387 μmol/L, at 8.7% of preischemia CBF. Regression analyses revealed that extracellular glutamate concentration increased by 21 μmol/L with each 1% decrease in residual CBF and that the percentage of damaged neurons increased by 2.6%. Conclusion: Our results indicate that residual CBF is an important factor that determines the extracellular glutamate concentration after the loss of membrane potential, and residual CBF would be one of the important determinants of neuronal cell prognosis.

DOI： 10.1097/ANA.0000000000000666

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The effectiveness of adenosine-induced flow arrest in surgical clipping for the cerebral aneurysms with difficulties in temporary clip placement to the proximal main trunk has been reported. This is the first clinical trial to evaluate the safety and feasibility of adenosine-assisted clipping surgery for unruptured cerebral aneurysms (UCAs) in Japan. The inclusion criteria are as follows: patients over 20 years old, patients who agree to be enrolled in this study after providing informed consent, patients who undergo clipping surgery for UCA in our institute, and patients in whom the surgeons (T.H. or I.D.) judge that decompression of the aneurysm is effective. The primary endpoint is a modified Rankin Scale (mRS) score 30 days after surgery. We plan to enroll 10 patients in this study. The original protocol of adenosine administration was established in this trial. Herein, we present the study protocol.

DOI： 10.2176/nmc.st.2021-0018

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

DOI： 10.1007/s00540-021-02931-x

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Other Link： https://link.springer.com/article/10.1007/s00540-021-02931-x/fulltext.html

Language：English   Publishing type：Research paper (scientific journal)  

BACKGROUND: Transvenous lead extraction (TLE) is necessary because of system infection, lead malfunction, or system upgrade. Patients with severe left ventricular dysfunction (SLVD) undergoing TLE may be at a higher risk because hemodynamic parameters may change unfavorably during or after TLE; however, this has not yet been clarified. OBJECTIVE: The purpose of this study was to examine whether patients with SLVD undergoing TLE have higher mortality. METHODS: All patients who underwent TLE were stratified as follows: patients with ejection fraction ≤ 35% (SLVD group) and those with ejection fraction > 35% (non-SLVD group). RESULTS: We assessed the data of 200 patients (SLVD group, 36; non-SLVD group, 164). Brain natriuretic peptide level and cardiac resynchronization therapy rate were higher in the SLVD group than in the non-SLVD group. There were no significant between-group differences in major complications and clinical success rates. Patients with SLVD were more likely to require additional hemodynamic support, such as catecholamine infusion, temporary atrial-ventricle sequential pacing, and temporary cardiac resynchronization therapy pacing (27.8% vs 1.2%; P < .001). The survival rate was not significantly different between the groups at 30 days and 1 year after TLE (SLVD vs non-SLVD: 30 days: 97.2% vs 99.4%; P = .215; 1 year: 80.6% vs 91.5%; P = .053). Multivariate Cox regression analysis revealed log brain natriuretic peptide and serum hemoglobin levels as predictors for 1-year mortality. CONCLUSION: The prognosis after TLE was comparable between patients with and without SLVD. However, additional hemodynamic support was often necessary for patients with SLVD.

DOI： 10.1016/j.hrthm.2021.01.026

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Various biomarkers have been proposed for sepsis; however, only a few become the standard. We previously reported that plasma histidine-rich glycoprotein (HRG) levels decreased in septic mice, and supplemental infusion of HRG improved survival in mice model of sepsis. Moreover, our previous clinical study demonstrated that HRG levels in septic patients were lower than those in noninfective systemic inflammatory response syndrome patients, and it could be a biomarker for sepsis. In this study, we focused on septic patients and assessed the differences in HRG levels between the non-survivors and survivors. We studied ICU patients newly diagnosed with sepsis. Blood samples were collected within 24 h of ICU admission, and HRG levels were determined using an enzyme-linked immunosorbent assay. Ninety-nine septic patients from 11 institutes in Japan were included. HRG levels were significantly lower in non-survivors (n = 16) than in survivors (n = 83) (median, 15.1 [interquartile ranges, 12.7-16.6] vs. 30.6 [22.1-39.6] µg/ml; p < 0.01). Survival analysis revealed that HRG levels were associated with mortality (hazard ratio 0.79, p < 0.01), and the Harrell C-index (predictive power) for HRG was 0.90. These results suggested that HRG could be a novel prognostic biomarker for sepsis.

DOI： 10.1038/s41598-021-89555-z

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

6歳男児。1年前に頭蓋咽頭腫に対して開頭腫瘍摘出術を施行された。今回、頭蓋咽頭腫の再発に対して再度摘出術を施行され、術後2日目に意識障害が出現し、血清Na値が182mmol/Lまで上昇した。中枢性尿崩症と考え、生理食塩水とバソプレシンの持続静注を開始した。術後3日目以降は意識レベルが回復していたが、7日目に意識障害が再度出現し、血清Na値が142mmol/Lまで低下していたため、浸透圧性脱髄症候群を鑑別に挙げて頭部MRIを施行し、橋外性髄鞘崩壊症と診断した。本例は頭蓋咽頭腫が視床下部に強く癒着しており、腫瘍摘出に伴い視床下部機能障害が生じたことで高Na血症が急速に進行したものと考えられた。

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2021&ichushi_jid=J02874&link_issn=&doc_id=20210611380012&doc_link_id=10.3918%2Fjsicm.28_227&url=https%3A%2F%2Fdoi.org%2F10.3918%2Fjsicm.28_227&type=J-STAGE&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00007_3.gif

Language：Japanese   Publisher：(公社)日本リハビリテーション医学会  

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Language：Japanese   Publisher：(公社)日本リハビリテーション医学会  

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ミクログリアの遊走は温度により調整されることが示唆されている．これまで，いくつかのイオンチャネルおよびトランスポータが遊走に関与することが知られているが，温度依存性による遊走の制御機構はまだ不明である．本研究は，実験を通じて，マウスのミクログリアがTRPPV4チャネルを介して温度依存性の運動を示すことを示したものである．
ミクログリアの動画像の自動トラッキング手法を開発し，ミクログリアの挙動解析を行った．

DOI： 10.1073/pnas.2012894118

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BACKGROUND: Respiratory compromise (RC) including hypoxia and hypoventilation is likely to be missed in the postoperative period. Integrated pulmonary index (IPI) is a comprehensive respiratory parameter evaluating ventilation and oxygenation. It is calculated from four parameters: end-tidal carbon dioxide, respiratory rate, oxygen saturation measured by pulse oximetry (SpO2), and pulse rate. We hypothesized that IPI monitoring can help predict the occurrence of RC in patients at high-risk of hypoventilation in post-anesthesia care units (PACUs). METHODS: This prospective observational study was conducted in two centers and included older adults (≥ 75-year-old) or obese (body mass index ≥ 28) patients who were at high-risk of hypoventilation. Monitoring was started on admission to the PACU after elective surgery under general anesthesia. We investigated the onset of RC defined as respiratory events with prolonged stay in the PACU or transfer to the intensive care units; airway narrowing, hypoxemia, hypercapnia, wheezing, apnea, and any other events that were judged to require interventions. We evaluated the relationship between several initial parameters in the PACU and the occurrence of RC. Additionally, we analyzed the relationship between IPI fluctuation during PACU stay and the occurrences of RC using individual standard deviations of the IPI every five minutes (IPI-SDs). RESULTS: In total, 288 patients were included (199 elderly, 66 obese, and 23 elderly and obese). Among them, 18 patients (6.3 %) developed RC. The initial IPI and SpO2 values in the PACU in the RC group were significantly lower than those in the non-RC group (6.7 ± 2.5 vs. 9.0 ± 1.3, p < 0.001 and 95.9 ± 4.2 % vs. 98.3 ± 1.9 %, p = 0.040, respectively). We used the area under the receiver operating characteristic curves (AUC) to evaluate their ability to predict RC. The AUCs of the IPI and SpO2 were 0.80 (0.69-0.91) and 0.64 (0.48-0.80), respectively. The IPI-SD, evaluating fluctuation, was significantly greater in the RC group than in the non-RC group (1.47 ± 0.74 vs. 0.93 ± 0.74, p = 0.002). CONCLUSIONS: Our study showed that low value of the initial IPI and the fluctuating IPI after admission to the PACU predict the occurrence of RC. The IPI might be useful for respiratory monitoring in PACUs and ICUs after general anesthesia.

DOI： 10.1186/s12871-021-01338-1

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PURPOSE: The scheduled administration of intravenous acetaminophen (scheduled-IV-AcA) is one of the more effective multimodal analgesic approaches for postoperative pain in abdominal/orthopedic surgeries. However, there is little evidence concerning scheduled-IV-AcA after general thoracic surgery, especially when limited to video-assisted thoracoscopic surgery (VATS). We investigated the efficacy of scheduled-IV-AcA administration in patients after undergoing VATS. METHODS: Ninety-nine patients who underwent VATS lobectomy or segmentectomy via an 8-cm access window and 1 camera port were retrospectively reviewed by categorizing them into groups either with scheduled-IV-AcA (Group AcA: n = 29) or without it (Group non-AcA: n = 70). Group AcA received 1 g of IV-AcA every 6 h from the end of the operation until the end of POD2. Postoperative pain was measured using a numeric rating scale (NRS) three times per day until discharge. RESULTS: NRS scores were significantly lower in Group AcA with motion (on POD1 to the first point of POD2) than in Group non-AcA. Group non-AcA was also more likely to use additional analgesics than Group AcA (39% vs. 17%, p = 0.058). CONCLUSIONS: Scheduled-IV-AcA administration is a safe and effective multimodal analgesic approach in patients undergoing VATS pulmonary resection via an 8-cm access window.

DOI： 10.1007/s00595-020-02127-y

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BACKGROUND: Intraoperative complications during combined thoracoscopic-laparoscopic surgery for esophagogastric junction (EGJ) carcinoma have not been reported as compared to those during surgery for esophageal carcinoma. We present two cases which had surgery-related hemodynamic instability during laparoscopic proximal gastrectomy and intra-mediastinal valvuloplastic esophagogastrostomy (vEG) with thoracoscopic mediastinal lymphadenectomy for EGJ carcinoma. CASE PRESENTATION: In case 1, the patient fell into hypotension with hypoxemia during laparoscopic vEG due to pneumothorax caused by entry of intraabdominal carbon dioxide. In case 2, ventricular arrythmia and ST elevation occurred during laparoscopic vEG. Pericardium retraction to secure surgical field during reconstruction compressed the coronary artery, which caused coronary malperfusion. These two events were induced by the surgical procedure, characterized by the following: (1) connection of the thoracic and abdominal cavities and (2) cardiac displacement during vEG. CONCLUSION: These cases indicated tension pneumothorax and coronary ischemia are possible intraoperative complications specific to combined thoracoscopic-laparoscopic surgery for EGJ carcinoma.

DOI： 10.1186/s40981-021-00419-x

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OBJECTIVES: The aim of this study was to investigate whether milrinone infusion improved one-year survival in patients who underwent the Norwood-Sano procedure. DESIGN: A retrospective observational study. SETTING: A single-institution university hospital. PARTICIPANTS: Children who underwent the Norwood-Sano procedure from January 2008 to December 2014. INTERVENTIONS: Patients were categorized into two groups: group E+D, who received routine epinephrine and dopamine infusion, and group M, who received routine milrinone infusion for intra- and postoperative inotropic support. MEASUREMENTS AND MAIN RESULTS: The primary outcome of this study was one-year survival after the Norwood-Sano procedure. A total of 45 patients were included (group E+D, 22; group M, 23). One-year survival in group M was significantly higher than that in group E+D (95.7% [22/23] v 72.7% [16/22], p = 0.03). A Kaplan-Meier curve also showed that one-year survival in group M was significantly higher than that in group E+D (p = 0.04), from the result of the log-rank test. The number of patients who had any arrhythmias in the intensive care unit (ICU) was significantly lower in group M than in group E+D (21.7% [5/23] v 50% [11/22], p = 0.03). The duration of ICU stay did not have statistical difference between groups (group M 19; interquartile range [IQR], 15-28) v group E+D 19.5 (IQR, 16.3-35.5) days, p = 0.57). CONCLUSIONS: Perioperative milrinone infusion improved the mortality after the Norwood-Sano procedure. Potential advantages of milrinone compared with epinephrine are fewer arrhythmias and better systemic perfusion, which could decrease lethal cardiac events in the ICU.

DOI： 10.1053/j.jvca.2021.02.017

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Okayama University  

Hepatic oxidative stress plays an important role in the pathogenesis of several acute liver diseases, and free heme is thought to contribute to endotoxemia-induced acute liver injury. The heme oxygenase 1 (HO-1) gene is upregulated and the δ-aminolevulinate synthase (ALAS1) gene is downregulated in the rat liver following lipopolysaccharide (LPS) treatment. BTB and CNC homology 1 (Bach1) is a heme-responsive transcription factor that normally represses HO-1 expression. In this study, we evaluated the changes in HO-1, ALAS1, and Bach1 expression and nuclear Bach1 expression in rat livers following intravenous LPS administration (10 mg/kg body weight). LPS significantly upregulated HO-1 mRNA and downregulated ALAS1 mRNA in the rat livers, suggesting that hepatic free heme concentrations are increased after LPS treatment. Bach1 mRNA was strongly induced after LPS injection. In contrast, nuclear Bach1 was significantly but transiently decreased after LPS treatment. Rats were also administered hemin (50 mg/kg body weight) intravenously to elevate heme concentrations, which decreased nuclear Bach1 levels. Our results suggest that elevated hepatic free heme may be associated with a decline of nuclear Bach1, and induction of Bach1 mRNA may compensate for the decreased nuclear Bach1 after LPS treatment in the rat liver.

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer Japan  

Purpose: Hyperglycemia has been associated with postoperative morbidity in patients who undergo cardiac surgery. However, it remains unclear whether the duration of hyperglycemia is as important as its magnitude in the development of postoperative end-organ dysfunction (PEOD). This retrospective study investigated the hypothesis that the intraoperative blood glucose (BG) exposure index (GE index), calculated by the product of the magnitude and duration of BG concentration ≥ 180 mg/dL, which is an integration of the severity and duration of hyperglycemia, is associated with the incidence of PEOD in patients undergoing cardiac surgery with cardiopulmonary bypass. Methods: The primary outcome in this study was PEOD within 72 h of surgery, which was defined as a composite of postoperative acute kidney injury, delirium, myocardial injury, and prolonged mechanical ventilation. The GE index (the magnitude of BG concentration deviation ≥ 180 mg/dL × duration of BG concentration ≥ 180 mg/dL) of each patient was calculated based on the intraoperative BG concentration. The relationship between the GE index and the primary outcome was examined via logistic regression model with adjustment for potential confounders. Results: Within 72 h of surgery, 301 patients (54.5%) developed PEOD. PEOD was more common in patients with greater GE index quartiles (first versus third quartile
adjusted odds ratio, 5.65, 95% confidence interval (95% CI), 2.94–10.90
P &lt
0.001
first versus forth quartile, adjusted odds ratio, 20.80
95% CI, 8.01–54.00
P &lt
0.001). Conclusion: In patients undergoing cardiac surgery with cardiopulmonary bypass, the GE index was an independent predictor of PEOD.

DOI： 10.1007/s00540-021-03024-5

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Nature Research  

Analgesic effect of transversus abdominis plane block (TAP block) in lower major abdominal laparoscopic surgery with about 5 cm of maximum surgical scar has been controversial. We hypothesized that TAP block has benefits, so the analgesic effect of TAP block after robot-assisted laparoscopic prostatectomy (RALP) was evaluated. One hundred patients were enrolled in this prospective, double-blinded, randomized study. Standardized general anesthesia with wound infiltration on camera port and fentanyl dose limit of 3 µg/kg was provided. Ultrasound-guided, single-shot subcostal TAP block with either 0.375% ropivacaine (Ropivacaine group, 48 patients) or normal saline (Control group, 52 patients) was performed by anesthesiologist in charge (34 anesthesiologists) after surgical procedure. Pain score using numerical rating scale (NRS) and postoperative intravenous fentanyl were evaluated for the first 24 postoperative hours. Median values (interquartile range) of NRS scores when the patients were transferred to post-anesthesia care unit (PACU) were 5 (2–7) in Ropivacaine group and 6 (4–8) in Control group at rest (P = 0.03), 5 (2–8) in Ropivacaine group and 7 (5–8) in Control group during movement (P &lt
0.01). These significant differences disappeared at the time of discharging PACU. Fentanyl doses for the first 24 postoperative hours were 210 µg (120–360) in Ropivacaine group and 200 µg (120–370) in Control group (P = 0.79). These results indicated that subcostal TAP block by anesthesiologists of varied level of training reduced postoperative pain immediate after RALP. TAP block had fundamental analgesic effect, but this benefit was too small to reduce postoperative 24-hour fentanyl consumption.

DOI： 10.1038/s41598-020-60687-y

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BACKGROUND: Pneumopericardium in neonates is often associated with respiratory diseases, of which positive pressure ventilation (PPV) is an exacerbating factor. Here, we present a neonate case of pneumopericardium after cardiac surgery which was resolved after applying PPV. CASE PRESENTATION: A 28-day-old neonate with left recurrent nerve palsy after aortic reconstruction for interrupted aortic arch developed pericardial effusion. Pericardiocentesis was performed under general anesthesia, and a drainage tube was left in the pericardium. After extubation, stridor gradually exacerbated, following hemodynamic deterioration. A chest X-ray demonstrated pneumopericardium. Upper airway stenosis due to recurrent nerve palsy developed excessive negative pleural pressure, and air was drawn into pericardium via the insertion site of the drainage tube. After tracheal intubation and applying PPV, the pneumopericardium improved. CONCLUSION: PPV does not always exacerbate pneumopericardium. In a patient with pericardial-atmosphere communication, increased inspiration effort can cause pneumopericardium, and PPV is a therapeutic option to alleviate the pneumopericardium.

DOI： 10.1186/s40981-020-00384-x

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：(株)メディカル・サイエンス・インターナショナル  

＜文献概要＞岡山大学病院(以下,当院)は,2008年に周術期管理センターperioperative management center(PERIO)を開設し,多職種連携による周術期管理を目指してきた。2018年には10周年を迎え,2020年時点で12年目である。本稿では,これまでのPERIOの歴史を振り返りながら,これからの周術期管理について考えてみたい。

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本医学教育学会  

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Language：Japanese   Publisher：(株)総合医学社  

＜POINT＞頭蓋内病変を有している症例での血液浄化療法は、▼不均衡症候群に伴う脳浮腫増悪、血圧低下に伴う脳灌流圧低下、抗凝固薬使用に伴う出血増悪などのリスクが高く、頭蓋内圧(intracranial pressure:ICP)上昇をひき起こす危険性が高い。▼血流量と浄化量をゆっくりと、生体適合性に優れた表面積の小さい浄化膜を用い、重炭酸濃度を抑え、ナトリウム濃度を高くした透析液の使用などを考慮する。▼continuous renal replacement therapy(CRRT)のほうが、intermittent renal replacement therapy(IRRT)より推奨される。▼IRRTを選択する場合は血液濾過(hemofiltraion:HF)やsustained low efficiency dialysis(SLED)を検討する。▼抗凝固薬の選択や浸透圧療法の併用を考慮する。(著者抄録)

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PURPOSE: Compared with open thoracotomy, minimally invasive esophagectomy (MIE) methods, such as transhiatal or thoracoscopic esophagectomy, likely have lower morbidity. However, the relationship between intraoperative fluid management and postoperative complications after MIE remains unclear. Thus, we investigated the association of cumulative intraoperative fluid balance and postoperative complications in patients undergoing MIE. METHODS: This single-center retrospective cohort study examined patients undergoing thoracoscopic esophagectomy for esophageal cancer in the prone position. Postoperative complications included pneumonia, arrhythmia, thrombotic events and acute kidney injury (AKI). We compared patients with higher and lower intraoperative fluid balance (higher and lower than the median). Multivariable logistic regression analyses were performed to estimate the odds ratio of intraoperative fluid balance status on the incidence of postoperative complications. RESULTS: In total, 135 patients were included in the study. Postoperative complications occurred in 43 (32%), including cardiac arrhythmia (n = 12, 9%), thrombosis (n = 20, 15%), pneumonia (n = 13, 10%), and AKI required hemodialysis (n = 1, 1%). Patients with a higher fluid balance had higher incidence of complications than those with a lower fluid balance (46% vs. 18%, p < 0.001). After adjusting for age, ASA-PS ≥ III, blood loss, and the use of radical surgery, the higher intraoperative fluid balance group was significantly and independently associated with postoperative complications (adjusted OR 5.31, 95% CI 2.26-13.6, p < 0.0001). CONCLUSIONS: In patients undergoing thoracoscopic esophagectomy in the prone position, a greater intraoperative positive fluid balance was independently associated with a higher incidence of complications.

DOI： 10.1007/s00540-020-02766-y

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Language：Japanese   Publisher：日本臨床麻酔学会  

症例は49歳,女性.肺リンパ脈管筋腫症に対して脳死両肺移植が予定された.麻酔導入後にセフォチアムを投与したところ,突然換気困難となり,同時に肺動脈圧の上昇を認めた.アナフィラキシーによる気管支痙攣を疑いアドレナリンを投与すると,換気は改善し肺動脈圧も低下した.全身麻酔中のアナフィラキシーは皮膚症状,循環症状,呼吸症状を認めることが多いが,肺動脈圧の変化については知られていない.動物実験ではアナフィラキシー発症時の肺血管抵抗の上昇,肺高血圧が報告されているが,ヒトでの報告はこれまでにほとんどない.本症例では,アナフィラキシーによる気管支痙攣時に,急激に肺高血圧を呈している可能性が示唆された.(著者抄録)

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2020&ichushi_jid=J01620&link_issn=&doc_id=20200529370003&doc_link_id=10.2199%2Fjjsca.40.221&url=https%3A%2F%2Fdoi.org%2F10.2199%2Fjjsca.40.221&type=J-STAGE&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00007_3.gif

Language：English   Publishing type：Research paper (scientific journal)  

BACKGROUND: The aim of this study was to evaluate the efficacy and safety of transdermal β-blocker patches, which offer stable blood concentration and easy availability during operation, for prevention of perioperative myocardial injury (PMI) in high-risk patients.Methods and Results:In this randomized controlled trial, patients aged >60 years with hypertension and high revised cardiac risk index (≥2) undergoing non-cardiac surgery were randomly assigned to a bisoprolol patch or control group. Primary efficacy outcome was incidence of PMI, defined as postoperative high-sensitivity cardiac troponin T (hs-cTnT) >0.014ng/mL and relative hs-cTnT change ≥20%. Secondary efficacy outcomes were number of cardiovascular events and 30-day mortality. From November 2014 to February 2019, 240 patients from 5 hospitals were enrolled in this study. The incidence of PMI was 35.7% in the bisoprolol patch group and 44.5% in the control group (P=0.18). Incidence of major adverse cardiac events including non-critical myocardial infarction, strokes, decompensated heart failure and tachyarrhythmia was similar between the 2 groups. Tachyarrhythmia tended to be higher in the control group. There were no significant differences in safety outcomes including significant hypotension and bradycardia requiring any treatment between the 2 groups. CONCLUSIONS: Bisoprolol patches do not influence the incidence of PMI and cardiovascular events in high-risk patients undergoing non-cardiac surgery, but perioperative use of these patches is safe.

DOI： 10.1253/circj.CJ-19-0871

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Background and aims: Agreement between measurements of creatinine concentrations using point-of-care (POC) devices and measurements conducted in a standard central laboratory is unclear for pediatric patients. Our objectives were (a) to assess the agreement for pediatric patients and (b) to compare the incidence of postoperative acute kidney injury (AKI) according to the two methods. Methods: This retrospective, single-center study included patients under 18 years of age who underwent cardiac surgery and who were admitted into the pediatric intensive care unit of a tertiary teaching hospital (Okayama University Hospital, Japan) from 2013 to 2017. The primary objective was to assess the correlation and the agreement between measurements of creatinine concentrations by a Radiometer blood gas analyzer (Cregas) and those conducted in a central laboratory (Crelab). The secondary objective was to compare the incidence of postoperative AKI between the two methods based on Kidney Disease Improving Global Outcomes (KDIGO) criteria. Results: We analyzed the results of 1404 paired creatinine measurements from 498 patients, whose median age was 14 months old (interquartile range [IQR] 3, 49). The Pearson correlation coefficient of Cregas vs Crelab was 0.968 (95% confidence interval [CI], 0.965-0.972, P < 0.001). The median bias between Cregas and Crelab was 0.02 (IQR -0.02, 0.05) mg/dL. While 199 patients (40.0%) were diagnosed as having postoperative AKI based on Crelab, 357 patients (71.7%) were diagnosed as having postoperative AKI based on Cregas (Kappa = 0.39, 95% CI, 0.33-0.46). In a subgroup analysis of patients whose Cregas and Crelab were measured within 1 hour, similar percentage of patients were diagnosed as having postoperative AKI based on Cregas and Crelab (42.8% vs 46.0%; Kappa = 0.76, 95% CI, 0.68-0.84). Conclusion: There was an excellent correlation between Cregas and Crelab in pediatric patients. Although more patients were diagnosed as having postoperative AKI based on Cregas than based on Crelab, paired measurements with a short time gap showed good agreement on AKI diagnosis.

DOI： 10.1002/hsr2.143

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Few reports of liver transplantation exist in patients with congenital absence of the portal vein and pulmonary hypertension. Living donor liver transplantation is usually performed before exacerbation of pulmonary hypertension. A 7-year-old girl (height: 131.5 cm; weight: 27.4 kg) with congenital absence of the portal vein was diagnosed with pulmonary hypertension (mean pulmonary artery pressure 35 mm Hg), and liver transplantation was planned before exacerbation of pulmonary hypertension. We successfully managed her hemodynamic parameters using low-dose dopamine and noradrenaline under monitoring of arterial blood pressure, central venous pressure, cardiac output, and stroke volume variation. Anesthesia was maintained using air-oxygen-sevoflurane and remifentanil 0.1 to 0.6 μg∙kg-1∙min-1. It is necessary to understand the potential perioperative complications in such cases and to adopt a multidisciplinary team approach in terms of the timing of transplantation and readiness to deal with exacerbation of pulmonary hypertension.

DOI： 10.1016/j.transproceed.2019.11.032

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Language：Japanese   Publisher：スパズム・シンポジウム事務局  

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Language：Japanese   Publisher：日本老年麻酔学会  

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Okayama University  

Little is known about the role of a strong ions in humans with respiratory abnormalities. In this study, we investigated the associations between partial carbon dioxide pressure (pCO2) and each of sodium ion (Na+) concentrations, chloride ion (Cl-) concentrations and their difference (SIDNa-Cl). Blood gas data were obtained from patients in a teaching hospital intensive care unit between August 2013 and January 2017. The association between pCO2 and SIDNa-Cl was defined as the primary outcome. The associations between pCO2 and [Cl-], [Na+] and other strong ions were secondary outcomes. pCO2 was stratified into 10 mmHg-wide bands and treated as a categorical variable for comparison. As a result, we reviewed 115,936 blood gas data points from 3,840 different ICU stays. There were significant differences in SIDNa-Cl, [Cl-], and [Na+] among all categorized pCO2 bands. The respective pCO2 SIDNa-Cl, [Cl-], and [Na+] correlation coefficients were 0.48,-0.31, and 0.08. SIDNa-Cl increased and [Cl-] decreased with pCO2, with little relationship between pCO2 and [Na+] across subsets. In conclusion, we found relatively strong correlations between pCO2 and SIDNa-Cl in the multiple blood gas datasets examined. Correlations between pCO2 and chloride concentrations, but not sodium concentrations, were further found to be moderate in these ICU data.

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japanese Journal of Clinical Chemistry  

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Okayama University  

We performed a retrospective cohort study of 911 high-energy trauma patients who underwent chest CT scans at least twice after admission. We hypothesized that in high-energy trauma patients, a high-inspired oxygen concentration delivered after admission results in dorsal atelectasis. The study’s primary outcome was dorsal atelectasis formation diagnosed based on CT images. We defined dorsal atelectasis as the presence of atelectasis at ≥ 10 mm thick on CT images. We defined high-inspired oxygen concentration as &gt
60% oxygen delivered between two CT scans. Four hundred sixty-five patients (51.0%) developed atelectasis according to the second CT scan, and 338 (37.1%) received a high-inspired oxygen concentration. A univariate analysis showed that the rate of the high-inspired oxygen concentration in the atelectasis group was significantly higher than that in the non-atelectasis group (43.4% vs. 30.1%, p&lt
0.001). However, a logistic regression analysis showed that there was no significant relationship between the oxygen concentration and the formation of dorsal atelectasis (OR: 1.197, 95%CI: 0.852-1.683, p=0.30). Age, the Injury Severity Score, BMI, and smoking were found to be risk factors of dorsal atelectasis formation in high-energy trauma patients. There was no relationship between the oxygen concentration and atelectasis formation in our series of high-energy trauma patients.

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A 9-year-old girl with Glenn circulation suffered from massive atelectasis of the left lung caused by bleeding during cardiac catheterization. The atelectasis resulted in frequent hypoxia leading to oxygen saturation (SpO2) of 40%-50%. In the intensive care unit, we performed a unilateral lung recruitment maneuver (ULRM) for 2 days. The ULRM involved placement of a bronchial blocker in the right main bronchus and application of continuous positive airway pressure to the left lung without hemodynamic deterioration. Eventually, SpO2 improved to 80%-85%. ULRM can be a treatment option for unilateral atelectasis in a child with Glenn circulation.

DOI： 10.1213/XAA.0000000000001101

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We here report that a 71-year-old Japanese woman with a history of anaphylaxis induced by muscle relaxants had local anesthetic systemic toxicity (LAST) following an abdominal surgery under general anesthesia with combined spinal-epidural anesthesia without muscle relaxants. The total dosages of local anesthetics reached 0.67 mg/kg of ropivacaine and 11.5 mg/kg of lidocaine over 12.5 h to obtain sufficient muscle relaxation for surgery. Regional anesthesia is useful in cases in which muscle relaxants are to be avoided during a surgery. However, especially for a patient with risk factors and prolonged surgery, precautions should be taken to prevent LAST.

DOI： 10.18926/AMO/57721

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BACKGROUND: Sodium-channel myotonia (SCM) is a nondystrophic myotonia, characterized by pure myotonia without muscle weakness or paramyotonia. The prevalence of skeletal muscle channelopathies is approximately 1 in 100,000, and the prevalence of SCM is much lower. To our knowledge, this is the first report on anesthetic management of a patient with SCM. CASE PRESENTATION: A 23-year-old woman with congenital nasal dysplasia and SCM was scheduled to undergo rhinoplasty with autologous costal cartilage. Total intravenous anesthesia without muscle relaxants was administered followed by continuous intercostal nerve block. Although transient elevation of potassium level in the blood was observed during surgery, the patient did not show exacerbation of myotonic or paralytic symptoms in the postoperative period. CONCLUSION: Total intravenous anesthesia and peripheral nerve block can be administered safely to a patient with SCM. However, careful monitoring of the symptoms and electrolytes is recommended.

DOI： 10.1186/s40981-019-0300-8

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Language：Japanese   Publisher：日本小児麻酔学会  

症例は1歳11ヵ月の男児、声門下狭窄に対して輪状軟骨前方切開術が予定された。術中管理の問題点として、Tチューブ挿入後の陽圧換気中のTチューブ口側断端からのエアリークが挙げられたため、Tチューブ内にTチューブ径より小径の挿管チューブを経鼻的に留置し、挿管チューブをクランプすることで口側断端を塞ぐ方法を計画した。しかしスペースが小さく留置困難だったため、経鼻的にFogartyカテーテルをTチューブ内に留置し、バルーン拡張にて口側断端からのエアリークを軽減し、確実に換気することができた。Tチューブ挿入下での呼吸管理において、位置調整など慎重な管理は必要となるが、小児症例ではFogartyカテーテルを用いた換気方法は有用性が高いと考える。(著者抄録)

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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PURPOSE: Epidural analgesia (EDA) is an imperative modality for postoperative pain relief after major open abdominal surgery. However, whether EDA has benefits in laparoscopic surgery has not been clear. In this study, the effects of EDA and patient-controlled intravenous analgesia (PCIA) after laparoscopic distal gastrectomy (LDG) were compared. METHODS: This was a retrospective study that included 82 patients undergoing LDG for gastric cancer. Patients received either EDA (n=67) or PCIA (n=15) for postoperative pain relief. Postoperative outcomes and analgesia-related adverse events were compared between the two modalities. RESULTS: EDA and PCIA patients showed no differences in the incidence of complications [9 (13%) vs. 2 (13%); P=0.99] and the length of postoperative hospital stay (9.6±4.5 d vs. 9.7±4.0 d; P=0.90), although the PCIA included poorer preoperative physical status (PS) patients. The number of additional doses of analgesics was higher in the EDA than in the PCIA (1.8±2.4 vs. 0.9±1.0; P=0.01), although postoperative pain scores were similar in the 2 groups. Though the time to first passage of flatus was shorter in the EDA (P<0.05), more EDA patients developed postoperative hypotension as an adverse event (P<0.01). The full mobilization day and the day of oral intake tolerance were not significantly different between the 2 groups after surgery. CONCLUSIONS: After LDG, EDA may not be indispensable, while PCIA may be the optimal modality for providing safe and effective postoperative analgesia and recovery.

DOI： 10.1097/SLE.0000000000000605

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：(一社)日本総合病院精神医学会  

電気けいれん療法(ECT)は、統合失調症患者においても緊張病状態や薬物治療抵抗例に対して考慮される重要な治療法である。ECTにおいて本邦で頻用される麻酔薬のpropofolは、強い抗けいれん作用を有するため、高い発作閾値が問題になるケースでは麻酔に工夫を要する。発作閾値上昇効果がないとされるketamineへの切り替え、または併用によるpropofolの減量は有効な方法の1つで、うつ病患者では抗うつ効果の増強も期待したketamineによるECTの報告が多い。一方でketamineは、その作用機序から統合失調症の精神症状を悪化させる懸念もある。今回、高い発作閾値が問題化したが、ketamineの併用によりpropofolを減量したECTで有効な発作が得られ、精神病症状の悪化を認めることなく有効かつ安全に治療し得た統合失調症の2例を経験したため報告する。(著者抄録)

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BACKGROUND AND AIMS: Postoperative hypoalbuminemia, especially following liver transplantation, can lead to adverse multisystem effects and even death. We investigated the relationship between postoperative albumin levels and organ failure (assessed using Sequential Organ Failure Assessment [SOFA] scores). METHODS: Sixty liver transplant recipients admitted to the intensive care unit (ICU) from 2012 to 2015 were retrospectively divided into 2 groups: lower albumin (LA) (n=28) and higher albumin (HA) (n=32), using whether serum albumin level fell below 3.0 g/dL during the first postoperative week as the stratifying factor. The SOFA scores (primary endpoint) and associated complications (ascites amount, rejection, re-intubation, abdominal re-operation, thrombosis), additional treatment (dialysis, pleural effusion drainage), and duration of ICU stay (secondary endpoints) of the 2 groups were compared. RESULTS: Average serum albumin levels were significantly different between HA and LA groups (3.6 [3.4-3.8] vs 3.1 [2.9-3.3], respectively, P<.05), although the amounts of albumin infused in the 2 groups during the first postoperative week were not different (HA vs LA: 42 [30-71] vs 40 [30-58], respectively, P=.37). Mean daily SOFA scores were not significantly different between the HA and LA groups (8.3 [6.6-9.0] vs 7.2 [6.3-8.6], P=.73), although the HA group had lower mean cardiovascular SOFA sub-scores than the LA group (0.1 [0-0.4] vs 0.4 [0-1.3], P=.032). There were no significant differences between the groups with regard to complication rates and duration of ICU and hospital stays. CONCLUSIONS: Serum albumin level might not influence cumulative organ function, but it decreases the amount of hemodynamic support required in liver transplant recipients.

DOI： 10.1016/j.transproceed.2019.01.199

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Language：Japanese   Publisher：(一社)日本総合病院精神医学会  

電気けいれん療法(ECT)は、統合失調症患者においても緊張病状態や薬物治療抵抗例に対して考慮される重要な治療法である。ECTにおいて本邦で頻用される麻酔薬のpropofolは、強い抗けいれん作用を有するため、高い発作閾値が問題になるケースでは麻酔に工夫を要する。発作閾値上昇効果がないとされるketamineへの切り替え、または併用によるpropofolの減量は有効な方法の1つで、うつ病患者では抗うつ効果の増強も期待したketamineによるECTの報告が多い。一方でketamineは、その作用機序から統合失調症の精神症状を悪化させる懸念もある。今回、高い発作閾値が問題化したが、ketamineの併用によりpropofolを減量したECTで有効な発作が得られ、精神病症状の悪化を認めることなく有効かつ安全に治療し得た統合失調症の2例を経験したため報告する。(著者抄録)

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：日本蘇生学会  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2019&ichushi_jid=J01761&link_issn=&doc_id=20191106220062&doc_link_id=%2Fcg9sosei%2F2019%2F003803%2F069%2F0193-0193%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fcg9sosei%2F2019%2F003803%2F069%2F0193-0193%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：(一社)日本心臓病学会  

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Language：English   Publishing type：Research paper (scientific journal)  

BACKGROUND: Minimally invasive cardiac surgery (MICS) for simple congenital heart defects has become popular, and monitoring of regional cerebral oxygen saturation (rSO2) is crucial for preventing cerebral ischemia during pediatric MICS. We describe a pediatric case with a sudden decrease in rSO2 during MICS. CASE PRESENTATION: An 8-month-old male underwent minimally invasive ventricular septal defect closure. He developed a sudden decrease in rSO2 and right radial artery blood pressure (RRBP) without changes in other parameters following pericardium traction. The rSO2 and RRBP immediately recovered after removal of pericardium fixation. Obstruction of the right innominate artery secondary to the pericardium traction would have been responsible for it. CONCLUSIONS: Pericardium traction, one of the common procedures during MICS, triggered rSO2 depression alerting us to the risk of cerebral ischemia. We should be aware that pericardium traction during MICS can lead to cerebral ischemia, which is preventable by cautious observation of the patient.

DOI： 10.1186/s40981-019-0273-7

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Language：Japanese   Publisher：一般社団法人 日本心臓血管麻酔学会  

機関誌『Cardiovascular Anesthesia Vol. 22 No. 1 2018』におきまして，一部誤りがございましたので，下記の通り訂正いたします。

P45 著者名

正：塩路 直弘，岩崎 達雄，清水 一好，金澤 伴幸，川瀬 宏和，木村 聡

黒江 泰利，佐藤 明，森松 博史，大月 審一，笠原 真悟

誤：塩路 直弘，岩崎 達雄，清水 一好，金澤 伴幸，川瀬 宏和，木村 聡

黒江 泰利，佐藤 明，森松 博史，大月 審一，笠原 慎吾

DOI： 10.11478/jscva.2018-9-001

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Background: The increase in the use of cardiac implantable electronic devices (CIEDs) has been associated with an increase in CIED-related infections. Transvenous lead extraction is safe and effective for patients with CIED-related infections; however, the mortality rate in these patients is high. The prognosis after transvenous lead extraction in Japanese patients, especially those with lead-related infective endocarditis, has not been evaluated. Then, the purpose of this study is to clarify the prognosis after transvenous lead extraction in Japanese patients with CIED-related infections at a single Japanese center. Methods: A total of 107 patients who underwent transvenous lead extraction were retrospectively reviewed. The patients were divided into a lead-related infective endocarditis group (n = 32) and a pocket infection group (n = 75). Procedure success rate and prognosis after lead extraction were evaluated between the two groups. Results: Procedure success rate was not significantly different between the groups. There were no deaths associated with the procedure or with infection. The survival rate was not significantly different at 1 year or at a median of 816 days (lead-related infective endocarditis vs pocket infection; 93.7% vs 94.7%, P = 1.000; 78.1% vs 81.3%, P = 0.791) Time to reimplantation and duration of hospital stay and antibiotics therapy were significantly longer for patients with lead-related infective endocarditis. Conclusion: In this study, the prognosis for patients with lead-related infective endocarditis after transvenous lead extraction was favorable. Thus, extraction should be strongly recommended, even if the general condition of the patient is poor.

DOI： 10.1002/joa3.12164

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Language：Japanese   Publisher：日本歯科衛生学会  

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Language：Japanese   Publisher：日本歯科衛生学会  

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Language：Japanese   Publisher：日本歯科衛生学会  

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Language：Japanese   Publisher：日本歯科衛生学会  

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Language：English   Publishing type：Research paper (scientific journal)  

OBJECTIVE: Hyperchloremia recently has been shown to have an association with the development of acute kidney injury (AKI) in critically ill patients. However, there is little information about the prevalence of an abnormal chloride concentration after pediatric cardiac surgery and its association with postoperative AKI. The aim of this study was to determine the prevalence of hyperchloremia and its association with AKI in pediatric patients after cardiac surgery. DESIGN: A retrospective single-center study. SETTING: Referral high-volume pediatric cardiac center in a tertiary teaching hospital. PARTICIPANTS: Patients under 72 months of age with congenital heart disease who underwent cardiac surgery with the use of cardiopulmonary bypass. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: The primary outcome was development of AKI diagnosed by Kidney Disease Improving Global Outcomes consensus criteria. The associations of outcomes with the highest serum chloride concentration ([Cl-]max) and time-weighted average chloride concentration ([Cl-]ave) within the first 48 hours after surgery were investigated. Of 521 patients included in the study, 463 patients (88.9%) had hyperchloremia at least 1 time within the first 48 hours after surgery. Postoperative AKI occurred in 205 patients (39.3%). [Cl-]ave and [Cl-]max in the AKI group were significantly higher than those in the non-AKI group (112 [110-114] mEq/L v 111 [109-113] mEq/L, p = 0.001 and 116 [113, 119] mEq/L v 114 [112-118] mEq/L, p = 0.002, respectively). After adjustment for other predictors of AKI by multivariable analyses, neither [Cl-]ave nor [Cl-]max was associated independently with the development of AKI (odds ratio [OR] = 1.040, 95% confidence interval [CI]: 0.885-1.220, p = 0.63; OR = 0.992, 95% CI: 0.874-1.130. p = 0.90). CONCLUSION: Postoperative hyperchloremia was common and was associated with the development of AKI in pediatric patients after congenital cardiac surgery in univariate analysis. After adjustment for predictors of AKI by multivariate analyses, there was no significant relationship between postoperative chloride concentration and AKI.

DOI： 10.1053/j.jvca.2018.12.009

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Morphine, fentanyl, and oxycodone are widely used as analgesics, and recently hydromorphone has been approved in Japan. Although all of these are selective for μ-opioid receptors (MORs) and have similar structures, their analgesic potencies and adverse effects (AEs) are diverse. Recent molecular analyses of MOR signaling revealed that the G protein-mediated signaling pathway causes analgesic effects and the β-arrestin-mediated signaling pathway is responsible for AEs. We used several cell-based analyses that selectively measure cellular responses activated by either G protein- or β-arrestin-mediated pathways. GloSensor™ cAMP, CellKey™, and receptor internalization assays were performed with four different types of cells stably expressing differentially labelled MOR. EC50 values measured by cAMP and CellKey™ assays had potencies in the order fentanyl ≤ hydromorphone < morphine ≤ oxycodone, all also exhibiting full agonist responses. However, in the internalization assay, only fentanyl elicited a full agonist response. Hydromorphone had the strongest potency next to fentanyl; however, contribution of the β-arrestin-mediated pathway was small, suggesting that its effect could be biased toward the G protein-mediated pathway. Based on these properties, hydromorphone could be chosen as an effective analgesic.

DOI： 10.1016/j.jphs.2019.06.005

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Purpose of Review: Recently, multidisciplinary strategies on accelerated recovery postoperatively have been provided, and management of the perioperative period has changed and improved dramatically. We summarize the enhanced recovery after surgery (ERAS®) protocol and its outcomes from a nutritional perspective. We established the perioperative management center (PERiO), much of whose work contents conform to ERAS®, but intensive dental staff involvement is characteristic. We also summarize its outcomes. Recent Findings: ERAS® is a multimodal perioperative care pathway designed to achieve early recovery for patients undergoing major surgery. Nutrition is a key pillar for patient care. Throughout the perioperative period, oral nutrition is suggested as well as possible. Good outcomes have been reported by a meta-analysis of randomized controlled trials. However, the dental staff are not regarded as part of the professional team. PERiO reported good outcomes of care bundles and suggested the importance of dental staff contribution. The Japanese social insurance system began to cover involvements of the dental staff for perioperative oral management since 2012. Analysis of the nationwide administrative claims database in Japan concluded that preoperative oral care by a dentist significantly reduced postoperative complications in patients undergoing cancer surgery. Summary: Currently, the dental staff are not regarded as key professionals of ERAS®, although the dental staff can contribute to good outcomes in the perioperative period and PERiO, and consequently, the Japanese universal health insurance coverage system covering involvements of the dental staff for perioperative oral management showed good outcomes. Therefore, further clinical studies involving dental specialty should be considered important for perioperative management from nutritional perspectives.

DOI： 10.1007/s40496-019-0217-3

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Language：English   Publishing type：Research paper (scientific journal)  

Hemorrhagic shock and resuscitation (HSR) induces a pulmonary inflammatory response and frequently causes acute lung injury. Carbon monoxide-releasing molecule-3 (CORM-3) has been reported to liberate and deliver CO under physiological conditions, which exerts organ-protective effects during systemic insults. The present study aimed to determine whether the administration of CORM-3 following HSR exerts a therapeutic effect against HSR-induced lung injury without any detrimental effects on oxygenation and hemodynamics. To induce hemorrhagic shock, rats were bled to a mean arterial blood pressure of 30 mmHg for 45 min and then resuscitated with the shed blood. CORM-3 or a vehicle was intravenously administered immediately following the completion of resuscitation. The rats were divided into four groups, including sham, HSR, HSR/CORM-3 and HSR/inactive CORM-3 groups. Arterial blood gas parameters and vital signs were recorded during HSR. The histopathological changes to the lungs were evaluated using a lung injury score, while pulmonary edema was evaluated on the basis of the protein concentration in bronchoalveolar lavage fluid and the lung wet/dry ratio. We also investigated the pulmonary expression levels of inflammatory mediators and apoptotic markers such as cleaved caspase-3 and transferase-mediated dUTP-fluorescein isothiocyanate nick-end labeling (TUNEL) staining. Although HSR caused significant lung histopathological damage and pulmonary edema, CORM-3 significantly ameliorated this damage. CORM-3 also attenuated the HSR-induced upregulation of tumor necrosis factor-α, inducible nitric oxide synthase and interleukin-1β genes, and the expression of interleukin-1β and macrophage inflammatory protein-2. In addition, the expression of interleukin-10, an anti-inflammatory cytokine, was inversely enhanced by CORM-3, which also reduced the number of TUNEL-positive cells and the expression of cleaved caspase-3 following HSR. Although CORM-3 was administered during the acute phase of HSR, it did not exert any influence on arterial blood gas analysis data and vital signs during HSR. Therefore, treatment with CORM-3 ameliorated HSR-induced lung injury, at least partially, through anti-inflammatory and anti-apoptotic effects, without any detrimental effects on oxygenation and hemodynamics.

DOI： 10.3892/etm.2019.7390

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DOI： 10.18926/AMO/56650

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Language：Japanese   Publisher：日本臨床麻酔学会  

小児におけるECMO(Extracorporeal Membrane Oxygenation)治療は、先天性心疾患に対しても重要な適応がある。小児複雑心奇形周術期におけるECMO導入のコンセンサスの得られた明確な基準はないが、循環破綻による多臓器障害を合併した状態での導入より、計画的早期の導入の方が離脱率の向上につながると考えられる。出血性合併症が問題となりやすいが、病態を把握し補充療法に努める。心機能の回復には心室の十分な減圧が必要である。小児複雑心奇形の特徴的な疾患である単心室症例のECMO管理では循環生理および解剖学的特徴をよく理解し、各々の状態に応じた管理が肝要である。(著者抄録)

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Language：English   Publishing type：Research paper (scientific journal)  

We compared the reintubation rate in children who received high-flow nasal cannula (HFNC) therapy to the rate in children who received noninvasive ventilation (NIV) therapy for acute respiratory failure (ARF) after cardiac surgery. This was a retrospective analysis of 35 children who received HFNC therapy for ARF after cardiac surgery in 2014-2015 (the HFNC group). We selected 35 children who had received NIV therapy for ARF after cardiac surgery in 2009-2012 as a control group. The matching parameters were body weight and risk adjustment for congenital heart surgery category 1. The reintubation rate within 48 h in the HFNC group tended to be lower than that in the NIV group (3% vs. 17%, p=0.06). The reintubation rate within 28 days was significantly lower in the HFNC group compared to the NIV group (3% vs. 26%, p=0.04). The HFNC group's ICU stays were significantly shorter than those of the NIV group: 10 (IQR: 7-17) days vs. 17 (11-32) days, p=0.009. HFNC therapy might be associated with a reduced reintubation rate in children with ARF after cardiac surgery.

DOI： 10.18926/AMO/56454

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Language：Japanese   Publisher：日本臨床麻酔学会  

55歳、男性。左房浸潤を伴う肺癌に対し、右上葉切除、S6切除および人工心肺を用いた左房部分切除術が予定された。人工心肺使用症例であることから、両側の脳局所組織酸素飽和度(rSO2)をモニターした。胸壁への癒着剥離の際、hemi-clamshell開胸開始後から右rSO2値のみ低下を認めた。胸壁のつり上げに伴い腕頭動脈が狭窄し右脳血流が著明に低下したことが原因と考えた。つり上げ程度の調整により右rSO2値は速やかに改善した。術後は神経学的後遺症なく経過した。本症例ではrSO2測定により術操作に伴う脳血流異常を検知・対応でき、神経学的後遺症を回避できた。(著者抄録)

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2019&ichushi_jid=J01620&link_issn=&doc_id=20190123360004&doc_link_id=130007592686&url=https%3A%2F%2Fci.nii.ac.jp%2Fnaid%2F130007592686&type=CiNii&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00003_1.gif

Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.2139/ssrn.3437790

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Japanese Circulation Society  

Background: Pulmonary embolism (PE) is a serious complication during the perioperative period. However, because most previous studies on the incidence of postoperative PE are based on symptoms, asymptomatic occurrences of PE have been overlooked, and the absolute incidence of postoperative PE remains unknown. The aim of this study was to investigate the incidence of perioperative PE, regardless of its symptoms, by reviewing the clinical interpretations of the diagnostic images obtained during the postoperative period. Methods and Results: This study included all patients aged at least 18 years who underwent operations under general and/or neuraxial anesthesia in our institution from 2013 to 2016. We reviewed all interpretations of the diagnostic imaging performed in the postoperative period. We analyzed the 90-day cumulative incidence of postoperative PE and the characteristics, risk factors, and symptoms of patients with and without postoperative PE. Among 21,763 operations, postoperative diagnostic imaging was performed in 1,168 patients, which found PE in 217 patients. Symptoms appeared in 11.1% (24/217) of the PE patients, and 66.7% of these symptoms were decreased levels of SpO 2 alone. Mortality from PE was 0.5% (1/217). Conclusions: Diagnostic imaging found a number of postoperative PE cases, regardless of the presence of symptoms. Although symptomatic PE was not a frequent occurrence, these findings suggest that clinicians should be aware of postoperative PE even under current prophylaxis.

DOI： 10.1253/circj.CJ-18-0729

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There are no reports of human research on continuous epidural contrast injection, and there are no definite methods to investigate the spread of drugs injected continuously into the epidural space. We investigated the feasibility of continuous epidural contrast injection in patients undergoing computed tomography (CT)-guided therapy. In this study, a combination of a contrast agent mixed with 0.75% ropivacaine was used as the test drug. The main outcome evaluated was the feasibility of continuous epidural contrast imaging by CT scan following epidural injection of a contrast agent with 0.75% ropivacaine. We studied three patients who underwent CT-guided procedures and found that continuous epidural contrast injection was possible without any deleterious effects, such as an allergic reaction. The spread of the contrast agent was not consistent with the level of the clinical analgesic effect. Continuous epidural contrast injection is a feasible procedure. The results of our study might contribute to future research on continuous epidural contrast administration, as well as provide patients with superior analgesia.

DOI： 10.2147/JPR.S193500

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DOI： 10.1007/s12185-018-2536-x

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Language：Japanese   Publisher：バイオメカニズム学会  

適切な神経刺激と誘発筋収縮の正確なモニタリングを行うことができる筋弛緩モニターを開発するために、機器の試作および刺激実験を行って性能を確認した。被験者は健常な50～60代男性2名とした。筋弛緩モニターシステムは、母指の筋振動を検出する軸加速度センサ、尺骨神経の選択的神経刺激が可能なアレイ電極、電極の自動探索を行う電極選択インタフェース、および電気刺激や四連刺激比を表示する筋弛緩モニターから構成された。まず、臨床でよく用いられ尺骨神経の支配を受ける母指内転筋を対象とし、筋弛緩モニタリングを行った。次に、試作したアレイ電極の神経刺激選択性を確認するために、正中神経を刺激して実験を行った。また、正中神経よりも細い尺骨神経を選択的に電気刺激して、正確に母指内転筋の筋振動を誘発できるかを確認した。本実験で得られた結果から、製作したアレイ電極は筋弛緩モニタリングに適した尺骨神経刺激部位を探索することが可能であり、また本実験で用いた加速度センサによって精度良く対象筋の動きを測定でき、当初の問題点を解決できたと考える。

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Language：Japanese   Publisher：日本小児麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：English   Publishing type：Research paper (scientific journal)  

We investigated the incidence of desaturation during general anesthesia in preoperatively hypoxic (< 92%), and nonhypoxic (≥ 92%) pediatric (n=1,090) and adult (n=5,138) patients. We plotted the patients' SpO2 value time-courses and assessed desaturation in 6,228 patients. The crude overall incidence (95%CI) for desaturation was 11.1% (9.4-13.1) in the pediatric patients and 0.9% (0.6-1.2) in the adults. The crude incidence of desaturation in the hypoxic pediatric patients was 2.5 times the risk in the nonhypoxic patients: risk ratio (RR) 2.5 (1.8-3.5), p<0.001. The risk of desaturation in the hypoxic adult patients was 20.1 times the risk in the nonhypoxic adult patients: RR 20.1 (10.3-39.2), p<0.001. When the patients were separately stratified by American Society of Anesthesiologists Physical Status (ASA-PS) and by age, the directly adjusted risk-ratio (RRS) showed that the hypoxic pediatric patients had 1.8 and 1.6 times the risk in the nonhypoxic pediatric patients: ASA-PS adjusted RRS 1.6 (1.8-2.2), p<0.001; age-adjusted RRS 1.8 (1.3-2.5), p<0.001, and the hypoxic adult patients had 13.8 times the risk in the nonhypoxic adult patients: RRS 13.8 (6.9-27.6), p<0.001. A pulse-oximeter check before the start of general anesthesia could ensure timely preparation to avoid intraoperative desaturation.

DOI： 10.18926/AMO/56244

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Language：Japanese   Publisher：日本小児麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier B.V.  

Aim of the research: Glutamate transporter-1 (GLT-1
also known as excitatory amino acid transporter 2) plays an important role in the maintenance of glutamate homeostasis in the synaptic cleft. Downregulation of GLT-1 in the spinal cord has been reported in chronic pain models, which suggests that GLT-1 is involved in the development of chronic pain. However, the mechanism by which GLT-1 is downregulated in the spinal cord is still unknown. We hypothesized that norepinephrine is involved in the regulation of GLT-1. The aim of this study was to investigate the effect of norepinephrine on GLT-1 expression in cultured astrocytes. Methods: This study involved both in vivo and in vitro experiments. We first validated changes in GLT-1 mRNA expression in the spinal cord of rats with spared nerve injury (SNI) using real-time RT-PCR. Next, cultured primary astrocytes from the rat spinal cord were stimulated with norepinephrine, and GLT-1 mRNA was subsequently quantitated. RNB cells, an astrocytic cell line, were also stimulated with norepinephrine and other α-adrenoceptor agonists. Results: SNI resulted in bilateral downregulation of GLT-1 in rat spinal cord. The in vitro study showed that norepinephrine and phenylephrine dose-dependently downregulated GLT-1 in primary astrocytes and RNB cells. Furthermore, the effect of norepinephrine was reversed by an α-adrenoceptor antagonist. Conclusion: Norepinephrine downregulates GLT-1 mRNA expression in astrocytes via the α 1 -adrenoceptor. Our results provide new insight into the mechanisms involved in downregulation of GLT-1 in the chronic pain models.

DOI： 10.1016/j.bbrc.2018.08.137

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Language：Japanese   Publisher：(NPO)日本急性血液浄化学会  

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Language：Japanese   Publisher：(NPO)日本急性血液浄化学会  

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Language：Japanese   Publisher：(NPO)日本急性血液浄化学会  

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：一般社団法人 日本心臓血管麻酔学会  

Nasal high flow therapy (NHFT)は，死腔の二酸化炭素洗い流し効果，規定された吸入酸素濃度の供給，持続陽圧効果などの特徴を有する呼吸補助デバイスである。成人では，NHFTは従来の酸素療法に比べて再挿管率の改善で有利な結果が得られており，小児心臓術後でもその役割が期待される。小児心臓手術後症例には並列循環やフォンタン循環といった特殊な循環動態の症例が含まれる。このような症例では投与酸素濃度や持続陽圧が循環動態に影響を与えるため，小児心臓手術後症例にNHFTを使用する際は病態やデバイスの特徴をよく理解して使用することが望ましい。また，NHFTの応用的な使用方法に，一酸化窒素（NO）とNHFTを併用したNO療法，窒素とNHFTを併用した低酸素療法がある。このようにNHFTは可能性がある呼吸補助デバイスであるが，現時点で小児心臓手術後のNHFTに関するエビデンスは限定されている。今後，小児心臓手術後の呼吸管理に関する新たな臨床研究が行われることが嘱望される。

DOI： 10.11478/jscva.2018-1-004

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Other Link： https://search.jamas.or.jp/link/ui/2019006587

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Kokuseido Publishing Co. Ltd  

We report perioperative management of the first case in Japan of complete robotic renal autotransplan-tatioa This procedure was applied to a 38-year-old woman with ureteral stenosis. Anesthesia was induced by propofol and rocuronium with oxygen, and maintained by sevoflurane with remifentanil in 40% oxygen balanced with air. We gave dopamine for keeping renal perfusion pressure and steroid for avoiding ischemia-reperfusion injury. Longer procedure could be expected because of vascular and ureteral anastomosis by totally robot assistance, we had to pay special attention to posture related complicatioa Although past report showed that no position change was performed throughout nephrectomy and autotransplantation, we decided to switch from right-side lateral to head-down dorsosacral position at the end of nephrectomy. Layout of surgical table, anesthetic machine and biomonitor had to be adjusted following postural change in order to keep robot surgical system sterilized. Preoperative precise discussion and simulation of surgical procedure among surgeons, anesthesiologists and nursing staff was important factor for the success of this procedure without any major complicatioa.

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DOI： 10.18926/AMO/56169

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DOI： 10.2334/josnusd.17-0381

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Language：Japanese   Publisher：日本歯科衛生学会  

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Glucose transporter type 1 deficiency syndrome (GLUT1DS) causes central nervous system dysfunction including intractable epilepsy caused by impaired glucose transport to the brain. To prevent convulsions and maintain an energy source for the brain in patients with GLUT1DS, the maintenance of adequate ketone body concentrations, compensation of metabolic acidosis, and reduction of surgical stress are essential. We here report the perioperative management of a child with GLUT1DS.

DOI： 10.1213/XAA.0000000000000727

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DOI： 10.1097/ALN.0000000000002181

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Language：Japanese   Publisher：日本脳低温療法・体温管理学会  

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Mary Ann Liebert Inc.  

This study aimed to determine a target temperature for intraischemic hypothermia that can block increases in extracellular glutamate levels. Two groups of 10 rats each formed the normothermia and intraischemic hypothermia groups. Extracellular glutamate levels, the extracellular potential, and the cerebral blood flow were measured at the adjacent site in the right parietal cerebral cortex. Cerebral ischemia was induced by occlusion of the bilateral common carotid arteries and hypotension. In the intraischemic hypothermia group, brain hypothermia was initiated immediately after the onset of membrane potential loss. In the normothermia group, extracellular glutamate levels began to increase simultaneously with the onset of membrane potential loss and reached a maximum level of 341.8 ± 153.1 μmol·L-1. A decrease in extracellular glutamate levels was observed simultaneously with the onset of membrane potential recovery. In the intraischemic hypothermia group, extracellular glutamate levels initially began to increase, similarly to those in the normothermia group, but subsequently plateaued at 140.5 ± 105.4 μmol·L-1, when the brain temperature had decreased to &lt
32.6°C ± 0.9°C. A decrease in extracellular glutamate levels was observed simultaneously with the onset of membrane potential recovery, similarly to the findings in the normothermia group. The rate of decrease in extracellular glutamate levels was the same in both groups (-36.6 and-36.0 μmol·L-1 in the normothermia and intraischemic hypothermia groups, respectively). In conclusion, the target temperature for blocking glutamate release during intraischemic hypothermia was found to be 32.6°C ± 0.9°C. Our results suggest that the induction of intraischemic hypothermia can maintain low glutamate levels without disrupting glutamate reuptake. Institutional protocol number: OKU-2016146.

DOI： 10.1089/ther.2017.0041

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Language：Japanese   Publisher：日本神経麻酔集中治療学会  

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：BioMed Central Ltd.  

Background: Portopulmonary hypertension (POPH) is characterized by pulmonary vasoconstriction, while hepatopulmonary syndrome (HPS) is characterized by vasodilation. Definite POPH is a risk factor for the survival after orthotopic liver transplantation (OLT), as the congestive pressure affects the grafted liver, while subclinical pulmonary hypertension (PH) has been acknowledged as a non-risk factor for deceased donor OLT. Given that PH measurement requires cardiac catheterization, the tricuspid regurgitation pressure gradient (TRPG) measured by echocardiography is used to screen for PH and congestive pressure to the liver. We investigated the impact of a subclinical high TRPG on the survival of small grafted living donor liver transplantation (LDLT). Methods: We retrospectively analyzed 84 LDLT candidates. Patients exhibiting a TRPG ≥25 mmHg on echocardiography were categorized as potentially having liver congestion (subclinical high TRPG
n=34). The mean pulmonary artery pressure (mPAP) measured after general anesthesia with FIO20.6 (mPAP-FIO20.6) was also assessed. Patients exhibiting pO2&lt
80 mmHg and an alveolar-arterial oxygen gradient (AaDO2)≥15 mmHg were categorized as potentially having HPS (subclinical HPS
n=29). The clinical course after LDLT was investigated according to subclinical high TRPG. Results: A subclinical high TRPG (p=0.012) and older donor age (p=0.008) were correlated with a poor 40-month survival. Although a higher mPAP-FIO20.6 was expected to correlate with a worse survival, a high mPAP-FIO20.6 with a low TRPG was associated with high frequency complicating subclinical HPS and a good survival, suggesting a reduction in the PH pressure via pulmonary shunt. Conclusion: In cirrhosis patients, mPAP-FIO20.6 may not accurately reflect the congestive pressure to the liver, as the pressure might escape via pulmonary shunt. A subclinical high TRPG is an important marker for predicting a worse survival after LDLT, possibly reflecting congestive pressure to the grafted small liver.

DOI： 10.1186/s12876-018-0793-z

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Language：Japanese   Publisher：克誠堂出版(株)  

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2018&ichushi_jid=J01397&link_issn=&doc_id=20180509180007&doc_link_id=%2Fad3msuie%2F2018%2F006705%2F009%2F0511-0517%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fad3msuie%2F2018%2F006705%2F009%2F0511-0517%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

DOI： 10.1097/CCM.0000000000002947

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Language：English   Publishing type：Research paper (scientific journal)  

We will investigate the incidence of postoperative pulmonary complications (PPCs) with the prophylactic use of a high-flow nasal cannula (HFNC) after pediatric cardiac surgery. Children < 48 months old with congenital heart disease for whom cardiac surgery is planned will be included. The HFNC procedure will be commenced just after extubation, at a flow rate of 2 L/kg/min with adequate oxygen concentration to achieve target oxygen saturation ≥ 94%. This study will reveal the prevalence of PPCs after pediatric cardiac surgery with the prophylactic use of HFNC.

DOI： 10.18926/AMO/55862

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Language：Japanese   Publisher：日本臨床麻酔学会  

小児患者は、年齢・体重・身長がさまざまであり、麻酔中の人工呼吸器設定は一定の条件下ですべての患者を管理することはできない。成長発達に伴い体格が変化するため、それぞれに合わせた設定が必要である。また、小児患者は成人に比べ呼吸数が多い、気道が狭いなどの特徴を持ち、それら呼吸生理学・解剖学に基づいた呼吸器設定や気管チューブ選択が必要である。すなわち小児の人工呼吸器設定を適切に行うには、まず小児の呼吸生理学を理解する必要がある。全身麻酔下の呼吸生理学は自発呼吸下のそれとは異なるため、本稿では、まず小児の自発呼吸下での呼吸生理学を正しく理解しそれを全身麻酔下人工呼吸に応用する方法を解説する。(著者抄録)

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2018&ichushi_jid=J01620&link_issn=&doc_id=20180319160017&doc_link_id=%2Fci4jjsca%2F2018%2F003802%2F020%2F0250-0255%26dl%3D0&url=http%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fci4jjsca%2F2018%2F003802%2F020%2F0250-0255%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：日本臨床麻酔学会  

胸腺腫摘出術術後の抜管時に冠動脈攣縮から心停止に至ったと考えられる1例を経験した。症例は60歳、男性。術前評価で冠動脈器質的異常を認めなかったが、喫煙など複数の冠攣縮危険因子を有していた。腫瘍の浸潤性や術中循環動態の不安定性から、胸骨正中切開、静脈バイパス併用下胸腺腫摘出手術を行った。手術終了後にST上昇先行の心停止を発症したが、蘇生後の心機能回復は良好で、後遺症なく独歩退院した。術後の冠動脈攣縮誘発試験陽性から、心停止の原因は冠攣縮が強く疑われた。高侵襲手術などの手術因子、麻酔覚醒や薬剤投与などの術中因子が合わさり、冠攣縮に伴う心停止に至ったと考えられた。(著者抄録)

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2018&ichushi_jid=J01620&link_issn=&doc_id=20180319160002&doc_link_id=%2Fci4jjsca%2F2018%2F003802%2F002%2F0142-0147%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fci4jjsca%2F2018%2F003802%2F002%2F0142-0147%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：English   Publishing type：Research paper (scientific journal)  

BACKGROUND: High-sensitivity cardiac troponin T (hs-cTnT) is useful for detecting myocardial injury and is expected to become a prognostic marker in patients undergoing non-cardiac surgery. The aim of this pilot study evaluating the efficacy of β-blocker therapy in a perioperative setting (MAMACARI study) was to assess perioperative myocardial injury (PMI) in elderly patients with preserved ejection fraction (EF) undergoing non-cardiac surgery.Methods and Results:In this prospective observational cohort study of 151 consecutive patients with preserved EF and aged >60 years who underwent non-cardiac surgery, serum levels of hs-cTnT were measured before and on postoperative days 1 and 3 after surgery. PMI was defined as postoperative hs-cTnT >0.014 ng/mL and relative hs-cTnT change ≥20%. A total of 36 (23.8%) of the patients were diagnosed as having PMI. The incidence of a composite of cardiovascular events within 30 days after surgery, including myocardial infarction, stroke, worsening heart failure, atrial fibrillation and pulmonary embolism, was significantly higher in patients with PMI than in patients without PMI (odds ratio (OR) 9.25, P<0.001, 95% confidence interval (CI) 2.65-32.3). Multivariate analysis revealed that left ventricular diastolic dysfunction defined by echocardiography was independently associated with PMI (OR: 3.029, 95% CI: 1.341-6.84, P=0.008). CONCLUSIONS: PMI is frequently observed in elderly patients undergoing non-cardiac surgery. Diastolic dysfunction is an independent predictor of PMI.

DOI： 10.1253/circj.CJ-17-0747

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DOI： 10.18926/AMO/55671

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：スパズム・シンポジウム事務局  

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Association of Neurological Surgeons  

OBJECTIVE Although cortical spreading depolarization (CSD) has been observed during the early phase of subarachnoid hemorrhage (SAH) in clinical settings, the pathogenicity of CSD is unclear. The aim of this study is to elucidate the effects of loss of membrane potential on neuronal damage during the acute phase of SAH. METHODS Twenty-four rats were subjected to SAH by the perforation method. The propagation of depolarization in the brain cortex was examined by using electrodes to monitor 2 direct-current (DC) potentials and obtaining NADH (reduced nicotinamide adenine dinucleotide) fluorescence images while exposing the parietal-temporal cortex to ultraviolet light. Cerebral blood flow (CBF) was monitored in the vicinity of the lateral electrode. Twenty-four hours after onset of SAH, histological damage was evaluated at the DC potential recording sites. RESULTS Changes in DC potentials (n = 48 in total) were sorted into 3 types according to the appearance of ischemic depolarization in the entire hemisphere following induction of SAH. In Type 1 changes (n = 21), ischemic depolarization was not observed during a 1-hour observation period. In Type 2 changes (n = 13), the DC potential demonstrated ischemic depolarization on initiation of SAH and recovered 80% from the maximal DC deflection during a 1-hour observation period (33.3 ± 15.8 minutes). In Type 3 changes (n = 14), the DC potential displayed ischemic depolarization and did not recover during a 1-hour observation period. Histological evaluations at DC potential recording sites showed intact tissue at all sites in the Type 1 group, whereas in the Type 2 and Type 3 groups neuronal damage of varying severity was observed depending on the duration of ischemic depolarization. The duration of depolarization that causes injury to 50% of neurons (P50) was estimated to be 22.4 minutes (95% confdence intervals 17.0-30.3 minutes). CSD was observed in 3 rats at 6 sites in the Type 1 group 5.1 ± 2.2 minutes after initiation of SAH. On NADH?uorescence images CSD was initially observed in the anterior cortex∗it propagated through the entire hemisphere in the direction of the occipital cortex at a rate of 3 mm/minute, with repolarization in 2.3 ± 1.2 minutes. DC potential recording sites that had undergone CSD were found to have intact tissue 24 hours later. Compared with depolarization that caused 50% neuronal damage, the duration of CSD was too short to cause histological damage. CONCLUSIONS CSD was successfully visualized using NADH?uorescence. It propagated from the anterior to the posterior cortex along with an increase in CBF. The duration of depolarization in CSD (2.3 ± 1.2 minutes) was far shorter than that causing 50% neuronal damage (22.4 minutes) and was not associated with histological damage in the current experimental setting.

DOI： 10.3171/2016.9.JNS161385

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DOI： 10.1016/j.clnu.2018.01.002

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Language：English  

Sepsis remains a critical problem with high morbidity and mortality worldwide. One of the problems we have in critical care is the need to find a good biomarker of sepsis to determine the existence of bacterial infection and the severity of patients. This would enable us to start appropriate treatment at an earlier stage of the disease course. We propose that decreases in the plasma protein histidine-rich glycoprotein (HRG) is an excellent biomarker of sepsis compared with the current markers. Based on the novel pathophysiological roles of HRG in the cascade of events during sepsis, we also discuss the potential for supplemental therapy with purified HRG.

DOI： 10.1186/s13054-018-2127-5

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Publishing type：Research paper (scientific journal)   Publisher：Open Access Text Pvt, Ltd.  

DOI： 10.15761/pccm.1000148

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Publishing type：Research paper (scientific journal)   Publisher：Japan Society for Clinical Anesthesia  

DOI： 10.2199/jjsca.38.142

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Okayama University  

Quercetin is a flavonoid widely found in plants and marketed to the public as a supplement. Several studies have reported its effect on glial cells. This study aimed to examine the effect of quercetin on the development of neuropathic pain and the underlying mechanism in a spared nerve injury (SNI) rat model. Male Sprague- Dawley rats randomly assigned to the control or the quercetin group were subjected to SNI of the sciatic nerve. We measured pain behaviors on the hind paw and glial fibrillary acidic protein (GFAP) in the dorsal root ganglion (DRG) and spinal cord. Oral administration of 1% quercetin, begun before surgery, attenuated mechanical allodynia compared to the control group at days 7 and 10 after SNI. On the other hand, established pain was not attenuated in a post-dose group in which quercetin was begun 7 days after SNI. Quercetin inhibited GFAP in the satellite glial cells of the ipsilateral L5 DRG on day 7 compared to the control group. Quercetin suppressed the development of neuropathic pain through a mechanism partly involving the inhibition of satellite glial cells. As its safety is well established, quercetin has great potential for clinical use in pain treatment.

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Dove Medical Press Ltd.  

Aim of investigation: Pulsed radiofrequency (PRF) is a safe and effective approach for treating neuropathic pain. However, the optimal treatment conditions and analgesic mechanisms of PRF remain unclear. The aim of our study was to assess the beneficial and adverse effects of prolonged-duration PRF and the analgesic mechanisms of PRF treatment with neuropathic pain rats. Methods: Male Sprague Dawley rats received L5 spinal nerve ligation (SNL) for developing neuropathic pain. Fourteen days after L5 SNL surgery, they were divided into three groups according to duration of PRF current for 6 minutes, 12 minutes, and none. PRF current was delivered via direct visualization adjacent to the L5 dorsal root ganglion (DRG). Pain behavior was evaluated every week after L5 SNL surgery, until day 28. Seven days after PRF treatment, L5 DRG tissue was harvested to detect levels of activating translation factor 3 (ATF3
a marker of neuronal damage) and hyperpolarization-activated cyclic nucleotide (HCN)-gated cation channels (key factors in neuropathic pain) using quantitative PCR. Results: Before PRF application, withdrawal thresholds were significantly lower than at baseline and did not differ significantly between the three groups. After PRF application, withdrawal thresholds in the PRF6 and PRF12 groups were significantly increased compared to those in the sham group. However, those in the PRF6 and PRF12 groups did not differ significantly. The expression level of ATF3 mRNA in the PRF12 group was significantly higher than that in the sham group (P&lt
0.01), but the expression of HCN1 and HCN2 channels did not differ significantly between the three groups. Conclusion: Prolonged PRF exposure, from 6 to 12 minutes, was not only ineffective but also associated with increased neuronal damage. These findings do not support prolonged PRF exposure as a helpful treatment for neuropathic pain. In this study, the involvement of HCN channels in the antiallodynic effects of PRF was uncertain.

DOI： 10.2147/JPR.S168064

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Language：Japanese   Publisher：日本蘇生学会  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2017&ichushi_jid=J01761&link_issn=&doc_id=20171204210031&doc_link_id=%2Fcg9sosei%2F2017%2F003603%2F035%2F0161-0161%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fcg9sosei%2F2017%2F003603%2F035%2F0161-0161%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：日本蘇生学会  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2017&ichushi_jid=J01761&link_issn=&doc_id=20171204210030&doc_link_id=%2Fcg9sosei%2F2017%2F003603%2F034%2F0161-0161%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fcg9sosei%2F2017%2F003603%2F034%2F0161-0161%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：日本歯科衛生学会  

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Language：Japanese   Publisher：(NPO)日本小児循環器学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

総肺静脈還流異常症と大血管転位症はともに新生児期に根治的手術が必要となりうる先天性心疾患である.新生児の心臓は構造的,機能的に未熟であるため術後心不全に陥りやすい.加えて総肺静脈還流異常症,大血管転位症の患者は疾患特有の血行動態により左心不全や肺高血圧のリスクが高く注意が必要である.両疾患の新生児期の根治的手術を成功に導くためには,前負荷,後負荷,心筋収縮力,心拍数を適切に調節し限られた心機能を無理なく発揮できる環境を作ることが重要である.(著者抄録)

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Other Link： https://search-tp.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2017&ichushi_jid=J01620&link_issn=&doc_id=20170727200014&doc_link_id=%2Fci4jjsca%2F2017%2F003704%2F016%2F0491-0497%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fci4jjsca%2F2017%2F003704%2F016%2F0491-0497%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：日本臨床麻酔学会  

89歳,女性.口腔癌に対し全身麻酔下に切除術が予定された.気管挿管後,気管切開を施行し,気切孔よりガムエラスティックブジー(GEB)に沿ってスパイラルチューブを挿入した.両者とも抵抗なく挿入できたが,ETCO2は検出されなかった.気管支鏡で確認したところ,気管膜様部裂創を認めた.直ちに右片肺挿管とし,次いで左片肺挿管にした後に,開胸による気管修復術が施行された.この間,SpO2は100%を維持でき,循環動態も安定していた.術後は挿管のまま集中治療室へ入室,術後5日目に人工呼吸器から離脱,7日目にICU退室となった.気管切開手技のチューブ挿入時のGEBのルーチン使用を見直し,症例ごとの必要性などを術者と検討するべきである.(著者抄録)

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2017&ichushi_jid=J01620&link_issn=&doc_id=20170321180003&doc_link_id=%2Fci4jjsca%2F2017%2F003702%2F003%2F0156-0161%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fci4jjsca%2F2017%2F003702%2F003%2F0156-0161%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：スパズム・シンポジウム事務局  

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Language：Japanese   Publisher：The Japanese Society of Intensive Care Medicine  

A 35-year-old pregnant woman was referred to our hospital with suspected acute pancreatitis at 39 weeks of gestation. On admission, serum triglyceride (TG) level was 11,936 mg/dl and abdominal dynamic CT revealed severe acute pancreatitis. In order to avoid further progression of hypertriglyceridemia and acute pancreatitis, a cesarean section was performed. We then performed low density lipoprotein (LDL) apheresis for the hypertriglyceridemia with consideration of safety. After three cycles of LDL apheresis, serum TG level declined to 1,764 mg/dl. On the 15th day of hospitalization, she was discharged from our hospital without any complications. Treatment of hypertriglyceridemia, including plasma apheresis and heparin-insulin therapy, is important in addition to treatment of acute pancreatitis to reduce the risk of exacerbation of acute pancreatitis in hypertriglyceridemia-induced acute pancreatitis (HIAP). LDL apheresis would be safer than plasma exchange in terms of electrolyte disturbance and transfusion-related complication. LDL apheresis might be effective for patients with HIAP.

DOI： 10.3918/jsicm.24_26

CiNii Article

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Language：Japanese   Publisher：克誠堂出版(株)  

75歳女性。第3・4腰椎レベルの硬膜内髄外腫瘍に対し腫瘍摘出術が予定された。レミフェンタニル、プロポフォールによる麻酔管理を行い、術中の血圧変動にはフェニレフリン、ニカルジピンを使用し、手術は終了した。麻酔終了後の覚醒遅延を契機に頭蓋内出血、気脳症を発症したが、対症療法を主体とした全身管理を行ったところ、術後1日目のCTで気脳症や頭蓋内出血の改善が確認された。その後、徐々に意識レベルは改善し、軽度の認知機能障害が残存したものの、術後22日目に転院となった。

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Okayama University Medical School  

DOI： 10.18926/AMO/54809

CiNii Article

CiNii Books

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Other Link： http://search.jamas.or.jp/link/ui/2017326186

Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：(株)医学書院  

＜POINT＞集中治療室で用いる心血管作動薬はカテコールアミンと非カテコールアミンに分かれる.心血管作動薬にはそれぞれの特性があり,それを理解して使用する必要がある.集中治療室で用いる抗不整脈薬はβブロッカーとアミオダロンが多くなってきている.抗不整脈薬の作用機序・副作用を理解して使用する必要がある.(著者抄録)

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Language：Japanese   Publisher：日本蘇生学会  

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：(NPO)日本急性血液浄化学会  

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Language：Japanese   Publisher：日本歯科衛生学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

症例は29歳、男性。5年前に肺動脈性肺高血圧症(pulmonary arterial hypertension、PAH)を指摘されたが、内科的治療は行われていなかった。今回、胸痛を主訴に近医を受診し、造影CTにて肺動脈解離(pulmonary artery dissection、PAD)を指摘されたため、当院へ転院となった。当院入院後、緊急で主肺動脈人工血管置換術および左右肺動脈縫縮術が施行された。術後、PAHに対して早期に治療を開始した。未治療であったためPAHのコントロールに難渋したが、PAH治療薬の多剤併用および厳重な鎮静・挿管・人工呼吸管理を行うことで、POD21に抜管、POD29にICUを退室、POD101に退院となった。PADは非常に致死率の高い疾患であるが、早期の手術および厳重な術後管理により救命できた。(著者抄録)

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2016&ichushi_jid=J02874&link_issn=&doc_id=20160610390006&doc_link_id=10.3918%2Fjsicm.23.318&url=https%3A%2F%2Fdoi.org%2F10.3918%2Fjsicm.23.318&type=J-STAGE&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00007_3.gif

Language：Japanese   Publisher：日本臨床麻酔学会  

スガマデクスは安全・迅速にロクロニウムを拮抗できる薬剤として広く使用されている.今回われわれは筋弛緩モニターを使用し,投与基準どおりにスガマデクスを使用したにもかかわらず,術後に再クラーレ化が疑われた症例を経験した.症例は78歳の男性で,胃癌に対し腹腔鏡下幽門側胃切除術が施行された.術中およびスガマデクス投与前にTOFウォッチを使用し,TOFカウント2を確認後,スガマデクスを3.6mg/kg投与し抜管した.その約70分後に著明な酸素化の悪化と四肢の体動低下を認め,ネオスチグミン投与により酸素化・体動の改善を得た.投与基準どおりのスガマデクス使用でも再クラーレ化の可能性は否定できないため,抜管後の厳重な呼吸の観察が重要である.(著者抄録)

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2016&ichushi_jid=J01620&link_issn=&doc_id=20160128310001&doc_link_id=%2Fci4jjsca%2F2016%2F003601%2F001%2F0001-0006%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fci4jjsca%2F2016%2F003601%2F001%2F0001-0006%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Publishing type：Research paper (scientific journal)   Publisher：Ovid Technologies (Wolters Kluwer Health)  

DOI： 10.1097/01.ccm.0000508918.45752.7a

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier USA  

Background The aim of this study was to investigate the changes in oxygen consumption during liver transplantation and to examine the relationship between intraoperatively elevated systemic oxygen consumption and postoperative liver function. Methods This study was performed in 33 adult patients undergoing liver transplantation between September 2011 and March 2014. We measured intraoperative oxygen consumption through the use of indirect calorimetry, preoperative and intraoperative data, liver function tests, and postoperative complications and outcomes. Results The mean age of patients was 52 ± 9.7 years
14 (42%) of them were women. Average Model for End-Stage Liver Disease scores were 20 ± 8.9. Oxygen consumption significantly increased after reperfusion from 172 ± 30 mL/min during the anhepatic phase to 209 ± 30 mL/min (P &lt
.0001). We divided patients into 2 groups according to the increase in oxygen consumption after reperfusion (oxygen consumption after reperfusion minus anhepatic phase oxygen consumption: 40 mL/min increase as cutoff). The higher consumption group had a longer cold ischemia time and higher postoperative aspartate aminotransferase and alanine aminotransferase levels as compared with the lower oxygen consumption group. There were no statistically significant differences in major postoperative complications, but the higher oxygen consumption group tended to have shorter hospital stays than the lower consumption group (58 versus 95 days). Conclusions We have demonstrated that oxygen consumption significantly increased after reperfusion. Furthermore, this increased oxygen consumption was associated with a longer cold ischemia time and shorter hospital stays.

DOI： 10.1016/j.transproceed.2015.10.057

Scopus

PubMed

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DOI： 10.1007/s10157-015-1092-4

PubMed

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Language：Japanese   Publisher：(一社)日本移植学会  

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2015&ichushi_jid=J00083&link_issn=&doc_id=20160202330004&doc_link_id=%2Fcl8isoke%2F2015%2F005006%2F004%2F0582-0588%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fcl8isoke%2F2015%2F005006%2F004%2F0582-0588%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：日本臨床麻酔学会  

小児の重症筋無力症(myasthenia gravis:MG)に対する胸腺摘出術の適応は限られており,その麻酔管理の報告は少なく,安全性は確立されていない.症例は9歳の男児.症状の増悪を認める全身型小児MGに対して胸腔鏡下胸腺摘出術が施行された.術後の呼吸不全を避けるため,筋弛緩薬を用いずに全身麻酔で管理した.麻酔導入時はセボフルランとレミフェンタニルにて麻酔深度を深め,スムーズに気管挿管を行えた.術中も体動を認めることなく安定して経過し,手術室にて抜管した.術後経過は良好であった.全身型小児MG患者の胸腺摘出術の周術期管理において筋弛緩薬を用いることなく麻酔を行い,安全に管理することができた.(著者抄録)

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Other Link： https://search-tp.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2015&ichushi_jid=J01620&link_issn=&doc_id=20151126250004&doc_link_id=%2Fci4jjsca%2F2015%2F003507%2F004%2F0715-0718%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fci4jjsca%2F2015%2F003507%2F004%2F0715-0718%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：日本臨床麻酔学会  

筋萎縮性側索硬化症は,麻酔や手術侵襲により術後呼吸器機能が低下した場合には,人工呼吸器管理を余儀なくされる可能性がある.そのため,肺葉切除術のような呼吸機能を低下させる手術の麻酔管理はほとんど報告がない.今回われわれは,76歳女性の筋萎縮性側索硬化症患者の肺葉切除術に対して,プロポフォール,レミフェンタニルを用いた全静脈麻酔と胸部硬膜外麻酔を併用し安全に管理しえた.短時間作用型の麻酔薬や術後鎮痛の進歩,低侵襲手術の普及により筋萎縮性側索硬化症患者でも以前より安全に手術が行えるようになった.しかし将来的な人工呼吸までの期間を短縮する可能性はあるため,手術適応には慎重な評価が必要である.(著者抄録)

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Other Link： https://search-tp.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2015&ichushi_jid=J01620&link_issn=&doc_id=20151126250003&doc_link_id=%2Fci4jjsca%2F2015%2F003507%2F003%2F0711-0714%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fci4jjsca%2F2015%2F003507%2F003%2F0711-0714%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER SCIENCE BV  

Recent studies showed that the administration of dexmedetomidine relieved hyperalgesia in the presence of neuropathic pain. These findings have led to the hypothesis that the local administration of dexmedetomidine is useful for relieving acute inflammatory nociception, such as postoperative pain. Thus, we evaluated the inhibitory effect of locally injected dexmedetomidine on acute inflammatory nociception. Acute inflammatory nociception was induced by an intraplantar injection of 1% carrageenan into the hindpaws of rats, and dexmedetomidine was also injected combined with carrageenan. The paw withdrawal threshold based on von Frey filament stimulation was measured until 12 h after injection. We compared the area under the Lime-curve (AUC) between carrageenan and carrageenan with dexmedetomidine. To clarify that the action of dexmedetomidine was via alpha(2)-adrenoceptors, we evaluated the effect of yohimbine, a selective antagonist of alpha(2)-adrenoceptors, on the anti-nociception of dexmedetomidine. As the results, the intraplantar injection of carrageenan with over 10 mu M dexmedetomidine significantly increased AUC, compared to that with only carrageenan injection. This effect of dexmedetomidine was reversed by the addition of yohimbine to carrageenan and dexmedetomidine. These results demonstrated that the locally injected dexmedetomidine was effective against carrageenan-induced inflammatory nociception via alpha(2)-adrenoceptors. The findings suggest that the local injection of dexmedetomidine is useful for relieving local acute inflammatory nociception. (C) 2015 Elsevier B.V. All rights reserved,

DOI： 10.1016/j.ejphar.2015.06.054

Web of Science

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：(一社)日本アフェレシス学会  

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Language：Japanese   Publisher：日本小児麻酔学会  

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Language：Japanese   Publisher：医学図書出版(株)  

症例は71歳、男性。上顎癌に対して放射線、化学療法を先行した後、根治術を施行した。術後ICUに予定入室したが、入室約6時間後から血圧低下、代謝性アシドーシスが出現した。輸液負荷とノルアドレナリン持続投与にも抵抗性で敗血症性ショックを疑い、抗菌薬を変更、バソプレシン、アドレナリン、ハイドロコルチゾンを追加、CHDFを開始した。入室2日目に血液培養でグラム陰性桿菌が陽性となった。循環・呼吸不全と肝不全が進行したため、血漿交換、VA ECMOを導入した。その後も左心不全が急速に進行しIABPも挿入した。経過中2度、開創し皮弁を確認したが皮弁の血流は保たれていた。あらゆる治療に反応なく入室4日目に永眠した。後日、血液培養の結果がAeromonas属であることが判明した。免疫抑制の背景をもつ患者の場合、Aeromonas属による敗血症性ショックは重篤化し、急激に進行する可能性がある。(著者抄録)

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2015&ichushi_jid=J00001&link_issn=&doc_id=20150811310006&doc_link_id=%2Faa6icutc%2F2015%2F003907%2F007%2F0431-0435%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Faa6icutc%2F2015%2F003907%2F007%2F0431-0435%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：(一社)日本小児救急医学会  

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Language：Japanese   Publisher：(一社)日本腎臓学会  

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2015&ichushi_jid=J01126&link_issn=&doc_id=20150413210006&doc_link_id=40020429139&url=https%3A%2F%2Fci.nii.ac.jp%2Fnaid%2F40020429139&type=CiNii&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00003_1.gif

Language：Japanese   Publisher：スパズム・シンポジウム事務局  

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Language：Japanese   Publisher：スパズム・シンポジウム事務局  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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DOI： 10.1007/s00540-014-1939-y

PubMed

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：(一社)日本救急医学会  

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Language：Japanese   Publisher：(NPO)日本食道学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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DOI： 10.1186/cc14026

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Other Link： http://orcid.org/0000-0001-9444-9746

Language：Japanese   Publishing type：Research paper (scientific journal)  

Acoustic respiratory rate (RRa) monitoring has been validated for patients after general anesthesia and has been shown to be a useful technique. However, its feasibility in patients with a tracheostomy has not been assessed yet. Successful monitoring of RRa in a patient with a tracheostomy is described in this case report. A 56-year-old male patient was scheduled for cranioplasty after severe subarachnoidal hemorrhage under general anesthesia. A tracheostomy tube had been placed in the patient because of airway obstruction and altered spontaneous breathing. The acoustic sensor was placed at the usual position and RRa was successfully monitored by Rad 87® (Masimo Corp., Irvine). Statistical analysis was made for comparison of respiratory rate determined by RRa monitoring with respiratory rate visually counted by intensive care nurses. There was no statistically significant difference between the two respiratory rates (P=0.82). RRa monitoring is useful even in patients with a tracheostomy.

Scopus

PubMed

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Language：English   Publishing type：Research paper (scientific journal)  

Purpose: To evaluate the characteristics and outcomes of critically ill patients with severe acute kidney injury (AKI) treated and not treated with renal replacement therapy (RRT). Methods: Secondary analysis of a multi-centre cohort study. Primary exposure was RRT. Primary outcome was propensity and multi-variable adjusted-hospital mortality. Results: We studied 1250 patients (71.3%) who received and 502 (28.7%) who did not receive RRT. Reasons for not starting RRT (not mutually exclusive) were limitations of support (33.6%, n = 169), adequate urine output (46.2%
n = 232), plan to observe (56.4%
n = 283), and advanced age (12.6%
n = 63). Mortality was higher in those not receiving RRT due to limitations and advanced age but lower for adequate urine output and plan to observe. Propensity and multi-variable adjusted analysis showed no statistical difference in hospital mortality (adj-OR 1.47
95% CI, 0.93-2.24) in patients receiving RRT. Results were similar in a sensitivity analysis restricted to patients fulfilling risk, injury, failure, loss, end-stage kidney disease-FAILURE criteria (37.0%
n = 446) (adj-OR 1.36
95% CI, 0.70-2.66). Conclusion: In this cohort, reasons for not starting RRT included limitations of support and perception of impending renal recovery. Despite similar risk of mortality after adjusting for selection bias and confounders, RRT-treated patients were fundamentally different from non-treated patients across a spectrum of variables that precludes valid comparison in observational data. © 2013 Elsevier Inc.

DOI： 10.1016/j.jcrc.2013.08.002

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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Language：Japanese   Publisher：日本臨床外科学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：(NPO)日本小児循環器学会  

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Language：Japanese   Publisher：(NPO)日本小児循環器学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：日本小児麻酔学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publishing type：Research paper (scientific journal)  

Amiodarone is widely used in Europe and the United States for refractory ventricular fibrillation (VF) in various situations, such as VF after myocardial infarction or out-of-hospital cardiac arrest. We report a case of successful treatment with amiodarone of refractory VF immediately after releasing aortic cross-clamp in cardiac surgery. A 66-year-old man suffering from severe aortic stenosis underwent aortic valve replacement (AVR). General anesthesia was induced with propofol and remifentanil, and subsequently AVR was performed under cardiopulmonary bypass. Just after releasing aortic cross-clamp, VF occurred, and it continued despite multiple trials of cardioversion with direct current (DC) shocks of 20 J or 30 J. Furthermore, some DC shocks of 30 J or 50 J after administering lidocaine 60 mg and 0.5 mol·l-1 magnesium sulfate 20 ml were also ineffective. Then, nifekalant 20 mg was administered and DC shocks of 50 J were repeated intermittently, but VF still persisted. Eventually, VF disappeared after a final DC shock of 50 J with intravenous amiodarone 125 mg. Overall duration of VF was 60 minutes. The patient's trachea was extubated three days after the surgery without any complications. Intravenous amiodarone may be one of the most useful remedies for some types of arrhythmias including persistent VF.

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：English   Publishing type：Research paper (scientific journal)  

Background. The RIFLE classification scheme for acute kidney injury (AKI) is based on relative changes in serum creatinine (SCr) and on urine output. The SCr criteria, therefore, require a pre-morbid baseline value. When unknown, current recommendations are to estimate a baseline SCr by the MDRD equation. However, the MDRD approach assumes a glomerular filtration rate of ∼75 mLmin1.73 m2. This method has not been validated.Methods. Data from the Beginning and Ending Supportive Therapy for the Kidney (BEST Kidney) study, a prospective observational study from 54 ICUs in 23 countries of critically ill patients with severe AKI, were analysed. The RIFLE class was determined by using observed (o) pre-morbid and estimated (e) baseline SCr values. Agreement was evaluated by correlation coefficients and Bland-Altman plots. Sensitivity analysis by chronic kidney disease (CKD) status was performed.Results. Seventy-six percent of patients (n = 1327) had a pre-morbid baseline SCr, and 1314 had complete data for evaluation. Forty-six percent had CKD. The median (IQR) values were 97 μmolL (79-150) for oSCr and 88 μmolL (71-97) for eSCr. The oSCr and eSCr determined at ICU admission and at study enrolment showed only a modest correlation (r = 0.49, r = 0.39). At ICU admission and study enrolment, eSCr misclassified 18.8 and 11.7 of patients as having AKI compared with oSCr. Exclusion of CKD patients improved the correlation between oSCr and eSCr at ICU admission and study enrolment (r = 0.90, r = 0.84) resulting in 6.6 and 4.0 being misclassified, respectively.Conclusions. While limited, estimating baseline SCr by the MDRD equation when pre-morbid SCr is unavailable would appear to perform reasonably well for determining the RIFLE categories only if and when pre-morbid GFR was near normal. However, in patients with suspected CKD, the use of MDRD to estimate baseline SCr overestimates the incidence of AKI and should not likely be used. Improved methods to estimate baseline SCr are needed.

DOI： 10.1093/ndt/gfp159

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：SPRINGER TOKYO  

We aimed to clarify the acid-base abnormalities of patients with acute kidney injury (AKI) requiring peritoneal dialysis (PD) in pediatric cardiac care units.
A retrospective observational study was conducted in a pediatric cardiac care unit in a tertiary care university hospital. The subjects were 40 patients with AKI requiring PD between 2003 and 2005, and controls matched by type of surgery and body weight. Acid-base variables, including blood gas data and electrolytes, were assessed. The Stewart-Figge variables, including strong ion difference apparent (SIDa), strong ion difference effective (SIDe), and strong ion gap (SIG), were calculated.
Blood gas analyses showed that the PD group was more acidemic, with a lower mean bicarbonate and a lower mean base excess, typical features of metabolic acidosis. The strong ion analyses revealed that the PD group had lower mean sodium and albumin concentrations. Based on the Stewart-Figge methodology, SIDa was smaller in the PD group than in the control group, but SIG was similar in the two groups. Receiver-operating characteristic curve analyses showed that serum albumin was the only prognostic factor associated with PCCU mortality, even after adjustment for PD treatment.
Patients with AKI requiring PD in a pediatric cardiac care unit had significant metabolic acidosis compared to controls matched by the type of surgery and body weight. Hyponatremia and hypoalbuminemia were characteristics of these patients. The calculated SIDa was smaller in the PD than in the control group. Only the serum albumin had a significant prognostic value.

DOI： 10.1007/s00540-009-0747-2

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DOI： 10.3892/mmr_00000075

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：克誠堂出版(株)  

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Language：Japanese   Publisher：克誠堂出版(株)  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(NPO)日本小児循環器学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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PubMed

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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PubMed

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1007/s540-002-8098-8

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：克誠堂出版  

CiNii Books

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Language：Japanese   Publisher：(一社)日本小児麻酔学会  

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Language：Japanese   Publisher：克誠堂出版  

CiNii Books

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J-GLOBAL

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J-GLOBAL

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Language：Japanese   Publisher：(一社)日本病院薬剤師会  

患者の周術期quality of life向上のため、適切な術後疼痛管理が必要である。そのため、岡山大学病院(以下、当院)では術後に自己調節鎮痛法(patient controlled analgesia:以下、PCA)を使用する患者に対し、術後疼痛ラウンドを行っている。しかしながら、当院で実務実習を行った全実習生がPCAを使用した術後疼痛管理を経験できていなかった。そこで、今回実務実習の一環として「術後疼痛管理実習プログラム」を立案し、実習内容の均一化を試みた。病棟実習での疼痛ラウンド経験にかかわらず、実習生の理解度の上昇が認められた。また、薬剤師の術後疼痛へのかかわりについて高い理解が得られた。「術後疼痛管理実習プログラム」の導入は、すべての実習生が周術期のチーム医療における薬剤師の役割および術後疼痛管理への理解を深めるために有用であると考えられる。(著者抄録)

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Other Link： https://search-tp.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2021&ichushi_jid=J04451&link_issn=&doc_id=20211108270012&doc_link_id=%2Fdg4hppha%2F2021%2F005711%2F012%2F1237-1242%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fdg4hppha%2F2021%2F005711%2F012%2F1237-1242%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：(一社)日本ペインクリニック学会  

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Language：Japanese   Publisher：(一社)日本ペインクリニック学会  

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Language：Japanese   Publisher：(一社)日本ペインクリニック学会  

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Language：Japanese   Publisher：(一社)日本ペインクリニック学会  

ドライアイ類似の慢性難治性眼痛の3症例を経験した.当院の眼科治療後難治性眼痛の治療プロトコールに基づき,オキシブプロカイン点眼検査,リドカイン静脈内投与,薬物療法,神経ブロックを行い,痛みの機序を考慮し診断的治療を施行した.眼科領域では,客観的所見と疼痛の乖離を説明する概念として神経障害性眼痛(neuropathic ocular pain:NOP)が報告されているが,病態が国際疼痛学会の提唱する神経障害性痛の定義に適さないため,本稿では神経障害性痛を部分的に有する神経障害類似の眼痛(neuropathic like ocular pain:NLOP)と定義して症例を提示した.(著者抄録)

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2021&ichushi_jid=J03612&link_issn=&doc_id=20210226250001&doc_link_id=%2Fca0jjspc%2F2021%2F002801%2F001%2F0001-0004%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fca0jjspc%2F2021%2F002801%2F001%2F0001-0004%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

J-GLOBAL

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J-GLOBAL

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J-GLOBAL

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Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：(一社)日本ペインクリニック学会  

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Language：Japanese   Publisher：(一社)日本集中治療医学会  

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Language：Japanese   Publisher：日総研出版  

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J-GLOBAL

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J-GLOBAL

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J-GLOBAL

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J-GLOBAL

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J-GLOBAL

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Language：Japanese   Publisher：(一社)日本ペインクリニック学会  

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Language：Japanese   Publisher：真興交易(株)医書出版部  

硬膜外麻酔に関連した神経障害性疼痛の発生頻度は稀であり、一過性かつ自然経過で早期に改善することが報告されている。硬膜外穿刺を下位胸椎より穿刺した場合に生じる症状は、胸部や背中の違和感が通常考えやすいが、刺入部位の症状と乖離する踵の痛みが生じ下肢の神経障害性疼痛をきたした症例を経験した。(著者抄録)

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：真興交易(株)医書出版部  

治療後有痛性神経障害は、長期間放置された高血糖状態を急激に補正した後に発症し、通常時間経過とともに痛みの改善を認める。今回、われわれは、痛みの悪循環を呈した治療後有痛性神経障害の症例を経験した。種々の薬物療法・神経ブロックを行ったが鎮痛効果に乏しく、フェンタニルクエン酸塩貼付剤を導入したところ、痛みのコントロールが得られた。治療後有痛性神経障害での痛みの悪循環に対して、一時的なオピオイド鎮痛薬の導入は有効であると考えられた。(著者抄録)

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Language：Japanese   Publisher：(一社)日本ペインクリニック学会  

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Language：Japanese   Publisher：(株)メディカル・サイエンス・インターナショナル  

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Other Link： https://search-tp.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2019&ichushi_jid=J02927&link_issn=&doc_id=20190410180005&doc_link_id=10.11477%2Fmf.3101201348&url=https%3A%2F%2Fdoi.org%2F10.11477%2Fmf.3101201348&type=%88%E3%8F%91.jp_%83I%81%5B%83%8B%83A%83N%83Z%83X&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00024_2.gif

Language：Japanese   Publisher：日本臨床麻酔学会  

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Language：Japanese   Publisher：(一社)日本心臓血管麻酔学会  

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Language：Japanese   Publisher：(一社)日本ペインクリニック学会  

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Language：Japanese   Publisher：(NPO)日本食道学会