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Multicenter prospective observational study to clarify the current status and clinical outcome in Japanese patients who have an indication for implantable cardioverter-defibrillator (ICD) or wearable cardioverter defibrillator (WCD)

Multicenter prospective observational study to clarify the current status and clinical outcome in Japanese patients who have an indication for implantable cardioverter-defibrillator (ICD) or wearable cardioverter defibrillator (WCD) - TRANSITION JAPAN-ICD/WCD study

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000050180
Enrollment
650
Registered
2023-01-30
Start date
2023-04-01
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

heart failure, ventricular fibrillation

Interventions

None listed

Sponsors

Nihon University
Lead Sponsor
Nihon University Itabashi Hospital Nihon University Hospital Kanazawa University Hospital Kawaguchi Municipal Medical Center Kitasato University Hospital Juntendo University Hospital Tokyo Bay Urayasu/Ichikawa Medical Center Dokkyo Medical University Saitama Medical Center Fujita Health University Hospital Shonan Kamakura General Hospital Nihon Medical Center Tokyo Metropolitan Hiroo Hospital Kobe University Hospital National Cerebral and Cardiovascular Center St. Marianna Universi
Collaborator
s Medical University Hospital Ogaki Municipal Hospital Saitama Medical University International Medical Center Jichi Medical University Hospital Yamagata University Hospital Kagoshima University Hospital Hirosaki University Hospital Chiba University Hospital Sendai Kousei Hospital National Hospital Organization Kanazawa Medical Center Yamaguchi Prefectural Grand Medical Center Saiseikai Kumamoto Hospital Shinkoga Hospital Showa University Hospital Showa University Koto Toyosu Hospi
Collaborator

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Heart failure cases that meet the indication criteria for each device according to the guidelines in Japan. <ICD primary prevention indication patients> Patients who meet all of the following criteria: 1.Sufficient drug therapy 2.Left ventricular ejection fraction (LVEF) <=35% 3.Heart failure symptoms of NYHA functional class II or higher <ICD secondary prevention indication patients> Patients with LVEF <=35%, NYHA functional class II or higher heart failure symptoms, after excluding reversible factors, who meet one of the following criteria: 1.Out-of-hospital cardiac arrest with ventricular fibrillation or electric shock 2.Persistent ventricular tachycardia 3.Unexplained syncope <WCD indication patients> Patients who meet one of the following criteria: 1.Within 40 days after onset of acute myocardial infarction with NYHA functional class II-III heart failure symptoms and LVEF <= 35% 2.Within 90 days after coronary artery bypass grafting or percutaneous coronary intervention with NYHA functional class II-III heart failure symptoms and LVEF <= 35% 3.Within 90 days after onset of non-ischemic acute heart failure with LVEF <=35%

Exclusion criteria

Exclusion criteria: 1.Patients who cannot expect to live longer than 12 months 2.Patients with recurrent VT or Vf that cannot be controlled with antiarrhythmic drugs or catheter ablation 3.Patients with drug-resistant severe congestive heart failure (NYHA class4) who are not candidates for heart transplantation, CRT, or LVAD

Design outcomes

Primary

MeasureTime frame
device introduction rate

Secondary

MeasureTime frame
1.Incidence of VT/VF and presence of sudden death 2.All-cause mortality 3.Cardiovascular events (cardiovascular death, hospitalization due to heart failure, and other cardiovascular events requiring hospitalization) 4.Stroke/TIA and systemic embolism 5.Myocardial infarction and unstable angina 6.Heart failure requiring hospitalization and other cardiovascular events requiring hospitalization 7.Major bleeding 8.Clinically relevant non-major bleeding 9.Major bleeding or clinically relevant non-major bleeding 10.Cardiovascular death 11.Other deaths 12.Device complications

Countries

Japan

Contacts

Public ContactYukitoshi Ikeya

Nihon University School of Medicine Department of Medicine, Division of Cardiology

ikeya.yukitoshi@nihon-u.ac.jp03-3972-8111

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026