Faculty Profiles - NAKAGAWA Kouji

Papers - NAKAGAWA Kouji

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Low-Angle Patent Foramen Ovale (PFO): High-Risk PFO Morphology Associated with Paradoxical Embolism. International journal

Rie Nakayama, Yoichi Takaya, Teiji Akagi, Takashi Miki, Koji Nakagawa, Norihisa Toh, Hiroshi Ito

CASE (Philadelphia, Pa.) 5 ( 3 ) 183 - 185 2021.6

Prognosis of patients with severe left ventricular dysfunction after transvenous lead extraction and the need for additional hemodynamic support in the perioperative period. International journal

Nobuhiro Nishii, Takashi Nishimoto, Tomofumi Mizuno, Takuro Masuda, Saori Asada, Masakazu Miyamoto, Satoshi Kawada, Koji Nakagawa, Kazufumi Nakamura, Hiroshi Morita, Hiroshi Morimatsu, Shingo Kasahara, Hiroshi Ito

Heart rhythm 18 ( 6 ) 962 - 969 2021.6

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 (18%); non-SLVD group, 164 (82%)]). 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 atrium-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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Efficacy and safety of atrial septal defect closure using Occlutech Figulla Flex II compared with Amplatzer Septal Occluder.

Rie Nakayama, Yoichi Takaya, Teiji Akagi, Nobuhisa Watanabe, Takashi Miki, Koji Nakagawa, Norihisa Toh, Hiroshi Ito

Heart and vessels 36 ( 5 ) 704 - 709 2021.5

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

Few studies have reported the efficacy of Occlutech Figulla Flex II (FFII) device compared with Amplatzer Septal Occluder (ASO) device. The aim of this study was to examine the efficacy and safety of FFII compared with ASO for transcatheter atrial septal defect (ASD) closure. We retrospectively evaluated 190 patients using FFII and 190 patients using ASO who underwent transcatheter ASD closure. ASD characteristics were evaluated by transesophageal echocardiography. The prevalence of procedural complications, including erosion, device embolization, stroke, and new-onset atrial arrhythmia, and the presence of a residual shunt were evaluated between the two groups during 12-month follow-up. FFII was used more frequently than ASO in patients with a deficient aortic rim or septal malalignment (P = 0.02, P < 0.01, respectively). The procedural complications of erosion, device embolization, and stroke did not occur in any patients. New-onset atrial arrhythmia occurred in 3 patients of the FFII group and 4 patients of the ASO group, and the difference between the two groups was not significant (P = 0.70). A large residual shunt (≥ 3 mm) was observed in 6 patients of the FFII group and 5 patients of the ASO group, and the difference between the two groups was not significant (P = 0.76). FFII was used frequently in patients with high-risk ASD morphology; however, there was no difference in the prevalence of procedural complications or efficacy between patients using FFII and those using ASO.

DOI： 10.1007/s00380-020-01739-1

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肺高血圧を合併した心房中隔欠損症に対する治療戦略と長期予後

赤木禎治, 高谷陽一, 赤木達, 三木崇史, 中川晃志, 伊藤浩

日本肺高血圧・肺循環学会学術集会・日本小児肺循環研究会プログラム・抄録集 6回・27回 48 - 48 2021.5

Feasibility of transcatheter closure for absent aortic rim in patients with atrial septal defect. International journal

Yoichi Takaya, Teiji Akagi, Koji Nakagawa, Rie Nakayama, Takashi Miki, Norihisa Toh, Hiroshi Ito

Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions 97 ( 5 ) 859 - 864 2021.4

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

OBJECTIVES: This study aimed to assess the feasibility of transcatheter atrial septal defect (ASD) closure in patients with absent aortic rim. BACKGROUND: The indication of transcatheter closure for ASD with absent aortic rim is controversial. METHODS: We enrolled 547 patients with ASD who were scheduled for transcatheter closure. Morphologies of aortic rim were evaluated using transesophageal echocardiography (TEE). RESULTS: Aortic rim of <5 mm was observed in 396 (72%) patients; 128 (23%) had absent aortic rim of 0 mm, and 268 (49%) had deficient aortic rim of >0 to <5 mm. Patients with absent aortic rim frequently had aortic rim absence at an angle of 0° on TEE and septal malalignment. Of the 128 patients with absent aortic rim, 126 (98%) successfully underwent transcatheter closure, while 2 (2%) failed transcatheter closure due to a large defect with severe septal malalignment. The success rate of transcatheter closure was similar between patients with absent aortic rim and those with deficient aortic rim (98% vs. 99%, p = .45). After the procedure, no patients had erosion or device embolization during a median follow-up of 24 months. CONCLUSIONS: Transcatheter closure was successfully performed without adverse events in patients with absent aortic rim, as well as in those with deficient aortic rim. Our findings can be valuable to determine the indication of transcatheter closure in patients with ASD.

DOI： 10.1002/ccd.29457

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Percutaneous closure of residual atrial septal defect after surgical closure.

Soichiro Ogura, Yoichi Takaya, Teiji Akagi, Koji Nakagawa, Hiroshi Ito

Cardiovascular intervention and therapeutics 36 ( 2 ) 256 - 259 2021.4

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

Residual atrial septal defect (ASD) after surgical closure is rare, but some cases are seen during follow-up period. Redo surgery for residual ASD is often declined, while percutaneous closure can be acceptable. However, the indication of percutaneous closure for residual ASD has not been established. We reviewed our experience with percutaneous closure of residual ASD using medical and procedural records. Between 2006 and 2018, residual ASD was seen in seven patients. The median age of patients was 66 years (range 50-81 years), and the median period after surgical closure of ASD was 39 years (range 13-48 years). All patients had symptoms related to ASD. Percutaneous closure of residual ASD was successfully performed in all seven patients. No residual shunts were detected during the median follow-up period of 4.2 years (range 0.5-11 years) after percutaneous closure. Based on transesophageal echocardiographic findings and operative records for surgical closure, we considered two mechanisms causing residual ASD, such as the tear of surgical suture line and the overlooking of defect during surgical closure. Percutaneous closure of residual ASD was safely performed without any complications, suggesting that percutaneous is an effective therapeutic strategy for residual ASD after surgical closure.

DOI： 10.1007/s12928-020-00671-5

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心内膜心筋生検による心臓サルコイドーシスの診断(Diagnosis of Cardiac Sarcoidosis by Endomyocardial Biopsy)

中村一文, 網岡尚史, 中川晃志, 赤木達, 伊藤浩

日本循環器学会学術集会抄録集 85回 SS05 - 3 2021.3

脳卒中の予防的インターベンション2020 経皮的卵円孔開存閉鎖術の適応評価と治療成績

赤木禎治, 高谷陽一, 三木崇史, 中川晃志, 伊藤浩

日本心血管インターベンション治療学会抄録集 29回 417 - 417 2021.2

卵円孔開存症に対する経皮的デバイス閉鎖術の成績と合併症単一施設での経験から(Outcomes and complications after transcatheter device closure for patent foramen ovale: a single-center experience)

三木崇史, 赤木禎治, 中山理絵, 高谷陽一, 中川晃志, 伊藤浩

日本心血管インターベンション治療学会抄録集 29回 1383 - 1383 2021.2

下縁完全欠損症例に対する経皮的心房中隔欠損閉鎖術

駿河宗城, 赤木禎治, 三木崇史, 中山理絵, 高谷陽一, 杜徳尚, 中川晃志, 中村一文, 伊藤浩

日本心血管インターベンション治療学会抄録集 29回 618 - 618 2021.2

Morphological assessments of deficient posterior-inferior rim for transcatheter closure of atrial septal defect. International journal

Yoichi Takaya, Teiji Akagi, Koji Nakagawa, Rie Nakayama, Takashi Miki, Norihisa Toh, Hiroshi Ito

Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions 97 ( 1 ) 135 - 141 2021.1

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

OBJECTIVES: This study aimed to determine morphological characteristics of deficient posterior-inferior rim for transcatheter atrial septal defect (ASD) closure success. BACKGROUND: The feasibility of transcatheter closure of ASD with deficient posterior-inferior rim remains unclear. METHODS: Of 869 patients with ASD who were scheduled transcatheter closure, 121 with posterior-inferior rim of <5 mm were included. Posterior-inferior rim morphologies were evaluated by transesophageal echocardiography. RESULTS: One hundred six patients successfully underwent transcatheter closure, while 15 patients failed. These 15 patients had complete deficient posterior-inferior rim of 0 mm and/or a large defect of ≥38 mm. Multivariate logistic regression analysis showed that transcatheter closure failure was independently related to complete deficient posterior-inferior rim and a large defect of ≥38 mm. Incomplete deficient posterior-inferior rim of >0 to <5 mm was observed in 84 patients. All these patients successfully underwent transcatheter closure, except two patients with a large defect of ≥38 mm. Complete deficient posterior-inferior rim was observed in 37 patients. The frequency of complete deficient posterior-inferior rim was higher in patients who failed transcatheter closure (87% vs. 23%, p < .01), but transcatheter closure was performed successfully if the range of complete deficient rim was ≤30°. After the procedure, no adverse events occurred during a median follow-up of 24 months. CONCLUSIONS: Most patients with deficient posterior-inferior rim successfully underwent transcatheter closure. Transcatheter closure could be performed even in patients with complete deficient posterior-inferior rim if the range was partial. Our findings can help to identify candidates for transcatheter closure.

DOI： 10.1002/ccd.29182

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Efficacy of Saline Contrast Transthoracic Echocardiography for Identifying High-Risk Patent Foramen Ovale. International journal

Kazuki Suruga, Yoichi Takaya, Rie Nakayama, Teiji Akagi, Koji Nakagawa, Nobuhisa Watanabe, Madoka Haruna, Norihisa Toh, Hiroshi Ito

Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography 34 ( 1 ) 97 - 98 2021.1

Usefulness of right ventriculography compared with computed tomography for ruling out the possibility of lead perforation before lead extraction. International journal

Saori Asada, Nobuhiro Nishii, Takayoshi Shinya, Akihito Miyoshi, Yoshimasa Morimoto, Masakazu Miyamoto, Koji Nakagawa, Kazufumi Nakamura, Hiroshi Morita, Hiroshi Ito

PloS one 16 ( 3 ) e0245502 2021

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

PURPOSE: High-risk patients can be identified by preprocedural computed tomography (CT) before lead extraction. However, CT evaluation may be difficult especially for lead tip identification due to artifacts in the leads. Selective right ventriculography (RVG) may enable preprocedural evaluation of lead perforation. We investigated the efficacy of RVG for identifying right ventricular (RV) lead perforation compared with CT in patients who underwent lead extraction. METHODS: Ninety-five consecutive patients who were examined by thin-section non-ECG-gated multidetector CT and RVG before lead extraction were investigated retrospectively. Newly recognized pericardial effusion after lead extraction was used as a reference standard for lead perforation. We analyzed the prevalence of RV lead perforation diagnosed by each method. The difference in the detection rates of lead perforation by RVG and CT was evaluated. RESULTS: Of the 115 RV leads in the 95 patients, lead perforation was diagnosed for 35 leads using CT, but the leads for 29 (83%) of those 35 leads diagnosed as lead perforation by CT were shown to be within the right ventricle by RVG. Three patients with 5 leads could not be evaluated by CT due to motion artifacts. The diagnostic accuracies of RVG and CT were significantly different (p < 0.001). There was no complication of pericardial effusion caused by RV lead extraction. CONCLUSION: RVG for identification of RV lead perforation leads to fewer false-positives compared to non-ECG-gated CT. However, even in cases in which lead perforation is diagnosed, most leads may be safely extracted by transvenous lead extraction.

DOI： 10.1371/journal.pone.0245502

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Significance of Exercise-Related Ventricular Arrhythmias in Patients With Brugada Syndrome. International journal

Hiroshi Morita, Saori T Asada, Masakazu Miyamoto, Yoshimasa Morimoto, Tomonari Kimura, Tomofumi Mizuno, Koji Nakagawa, Atsuyuki Watanabe, Nobuhiro Nishii, Hiroshi Ito

Journal of the American Heart Association 9 ( 23 ) e016907 2020.12

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

Background Sinus tachycardia during exercise attenuates ST-segment elevation in patients with Brugada syndrome, whereas ST-segment augmentation after an exercise test is a high-risk sign. Some patients have premature ventricular contractions (PVCs) related to exercise, but the significance of exercise-related PVCs in patients with Brugada syndrome is still unknown. The objective of this study was to determine the significance of exercise-related PVCs for predicting occurrence of ventricular fibrillation (VF) in patients with Brugada syndrome. Methods and Results The subjects were 307 patients with Brugada syndrome who performed a treadmill exercise test. We evaluated the occurrence of PVCs at rest, during exercise and at the peak of exercise, and during recovery after exercise (0-5 minutes). We followed the patients for 92±68 months and evaluated the occurrence of VF. PVCs occurred in 82 patients (27%) at the time of treadmill exercise test: PVCs appeared at rest in 14 patients (4%), during exercise in 60 patients (20%), immediately after exercise (0-1.5 minutes) in 28 patients (9%), early after exercise (1.5-3 minutes) in 18 patients (6%), and late after exercise (3-5 minutes) in 12 patients (4%). Thirty patients experienced VF during follow-up. Multivariable analysis including symptoms, spontaneous type 1 ECG, and PVCs in the early recovery phase showed that these factors were independently associated with VF events during follow-up. Conclusions PVCs early after an exercise test are associated with future occurrence of VF events. Rebound of vagal nerve activity at the early recovery phase would promote ST-segment augmentation and PVCs in high-risk patients with Brugada syndrome.

DOI： 10.1161/JAHA.120.016907

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成人先天性心疾患の集中治療に挑む! 高齢者心房中隔欠損症のカテーテル治療における集中治療の必要性と意義

藤本竜平, 赤木禎治, 高谷陽一, 三木崇史, 中山理絵, 中川晃志, 伊藤浩

日本集中治療医学会雑誌 27 ( Suppl. ) 323 - 323 2020.9

Clinical impact of transcatheter atrial septal defect closure on new onset atrial fibrillation in adult patients: Comparison with surgical closure. International journal

Yasuhiro Fujii, Teiji Akagi, Koji Nakagawa, Yoichi Takaya, Koki Eto, Yosuke Kuroko, Yasuhiro Kotani, Kentaro Ejiri, Hiroshi Ito, Shingo Kasahara

Journal of cardiology 76 ( 1 ) 94 - 99 2020.7

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

BACKGROUND: Previous studies demonstrated that the incidence of atrial fibrillation (AF) was significantly increased when patients aged ≥40 years had surgical atrial septal defect (ASD) closure (sASD). However, limited information is available on such findings in transcatheter ASD closure (tASD). The purpose of this study was to investigate the incidence of newly developed AF after tASD in patients aged ≥40 years in whom preoperative AF or atrial flutter (AFL) had not been detected and to compare with the incidence after sASD. METHODS: The medical records of patients aged ≥40 years without a history of AF or AFL who underwent tASD (n = 281) or sASD (n = 24) were reviewed. Patients who had catheter ablation before the ASD closure were excluded. Patients with a patent foramen ovale were also excluded. The incidence of newly developed AF after ASD closure and the risk factors for that were evaluated statistically. RESULTS: Eleven patients had newly developed AF (5 in tASD and 6 in sASD) postoperatively including 6 persistent AF (3 each after tASD and sASD). The cumulative incidence of newly developed AF was 0.7% in tASD and 16.7% in sASD, and 2.7% and 20.8% at 1 and 5 years, respectively (p < 0.001). ASD diameter ≥30 mm and sASD were potential risk factors for newly developed AF after ASD closure and postoperative persistent AF. CONCLUSIONS: In patients aged ≥40 years without a history of AF or AFL, the incidence of newly developed AF after tASD closure was lower than that after sASD. A large ASD more than 30 mm diameter was a potential risk factor for development of AF even if it is closed by transcatheter procedure. Further long-term evaluation after tASD is required to clarify preventive benefit for new onset AF in adult ASD population.

DOI： 10.1016/j.jjcc.2020.01.008

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右室拡大が心房中隔欠損閉鎖術の適応に及ぼす影響(Impact of Right Ventricular Dilatation on an Indication for Atrial Septal Defect Closure)

中山理絵, 高谷陽一, 赤木禎治, 三木崇史, 中川晃志, 杜徳尚, 伊藤浩

日本循環器学会学術集会抄録集 84回 OJ32 - 9 2020.7

ハイリスク卵円孔開存の同定における造影経胸壁心エコー検査の有効性(Efficacy of Contrast Transthoracic Echocardiography on Identification of High-Risk Patent Foramen Ovale)

駿河宗城, 高谷陽一, 中山理絵, 赤木禎治, 三木崇史, 中川晃志, 杜徳尚, 伊藤浩

日本循環器学会学術集会抄録集 84回 OJ32 - 1 2020.7

Indication and prognostic significance of programmed ventricular stimulation in asymptomatic patients with Brugada syndrome. International journal

Saori Asada, Hiroshi Morita, Atsuyuki Watanabe, Koji Nakagawa, Satoshi Nagase, Masakazu Miyamoto, Yoshimasa Morimoto, Satoshi Kawada, Nobuhiro Nishii, Hiroshi Ito

Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology 22 ( 6 ) 972 - 979 2020.6

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

AIMS: To establish the indication for programmed ventricular stimulation (PVS) for asymptomatic patients with Brugada syndrome (BrS), we evaluated the prognostic significance of PVS based on abnormal electrocardiogram (ECG) markers. METHODS AND RESULTS: One hundred and twenty-five asymptomatic patients with BrS were included. We performed PVS at two sites of the right ventricle with up to three extrastimuli [two pacing cycle lengths and minimum coupling interval (MCI) of 180 ms]. We followed the patients for 133 months and evaluated ventricular fibrillation (VF) events. Fragmented QRS (fQRS) and Tpeak-Tend (Tpe) interval were evaluated as ECG markers for identifying high-risk patients. Fragmented QRS and long Tpe interval (≥100 ms) were observed in 66 and 37 patients, respectively. Ventricular fibrillation was induced by PVS in 60 patients. During follow-up, 10 patients experienced VF events. Fragmented QRS, long Tpe interval, and PVS-induced VF with an MCI of 180 ms or up to two extrastimuli were associated with future VF events (fQRS: P = 0.015, Tpe ≥ 100 ms: P = 0.038, VF induction: P < 0.001). However, PVS-induced VF with an MCI of 200 ms was less specific (P = 0.049). The frequencies of ventricular tachyarrhythmia events during follow-up were 0%/year with no ECG markers and 0.1%/year with no VF induction. The existence of two ECG factors with induced VF was strongly associated with future VF events (event rate: 4.4%/year, P < 0.001), and the existence of one ECG factor with induced VF was also associated (event rate: 1.3%/year, P = 0.011). CONCLUSION: We propose PVS with a strict protocol for asymptomatic patients with fQRS and/or long Tpe interval to identify high-risk patients.

DOI： 10.1093/europace/euaa003

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Effects of Bisoprolol Transdermal Patches for Prevention of Perioperative Myocardial Injury in High-Risk Patients Undergoing Non-Cardiac Surgery - Multicenter Randomized Controlled Study.

Hironobu Toda, Kazufumi Nakamura, Kazuyoshi Shimizu, Kentaro Ejiri, Takayuki Iwano, Toru Miyoshi, Koji Nakagawa, Masashi Yoshida, Atsuyuki Watanabe, Nobuhiro Nishii, Yukiko Hikasa, Masao Hayashi, Hiroshi Morita, Hiroshi Morimatsu, Hiroshi Ito

Circulation journal : official journal of the Japanese Circulation Society 84 ( 4 ) 642 - 649 2020.3

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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