| Enrolling By Invitation | EDEN Intracardiac Electrogram Recording and Classifying System NCT07137455 | National Heart, Lung, and Blood Institute (NHLBI) | N/A |
| Enrolling By Invitation | VINTAGE (Ventricular Intramyocardial Navigation for Tachycardia Ablation Guided by Electrograms) Using Commerc NCT06940752 | National Heart, Lung, and Blood Institute (NHLBI) | N/A |
| Recruiting | Real-Time Intracardiac Echocardiography for Ventricular Arrhythmia Ablation NCT07201506 | Insel Gruppe AG, University Hospital Bern | N/A |
| Not Yet Recruiting | Arrhythmic Risk in Myocarditis Outcome Research NCT07501481 | AZ Sint-Jan AV | — |
| Recruiting | Comparative Effectiveness of Carvedilol Versus Metoprolol Succinate in Heart Failure Patients With an Implanta NCT06964464 | University of Rochester | Phase 4 |
| Recruiting | Ventricular Arrhythmias in Acute Myocardial Infarction NCT07517523 | Poitiers University Hospital | — |
| Recruiting | Percutaneous Blockade of the Stellate Ganglion in Electrical Storm NCT07211347 | University of Sao Paulo General Hospital | Phase 4 |
| Not Yet Recruiting | Using Heart Electrical Signals to Study How Well Treatments Prevent Dangerous Heart Rhythms in Active People NCT07014579 | University of Leicester | — |
| Not Yet Recruiting | Proton Radiosurgery for the Treatment of Malignant Ventricular Tachyarrhythmias NCT06769451 | Azienda Sanitaria Universitaria Integrata del Trentino | N/A |
| Recruiting | Image-Based Prediction of Ventricular Tachycardias in Post-Myocarditis Patients: an International Multicenter NCT06730607 | Centro Medico Teknon | — |
| Enrolling By Invitation | COR-INSIGHT: Optimizing Cardiovascular and Cardiopulmonary Outcomes with AI-Driven Multiplexed Indications Usi NCT06763549 | Peerbridge Health, Inc | — |
| Recruiting | Image-Based Prediction of Ventricular Tachycardia Events in Non-ischemic Cardiomyopathy NCT06730464 | Centro Medico Teknon | — |
| Active Not Recruiting | Enlighten Study: The EV-ICD Post Approval Registry NCT06048731 | Medtronic | — |
| Recruiting | ElectroPhySiological Characterization Of the Arrhythmia Substrate for Sudden Cardiac Death PrEdiction NCT07020702 | University Hospital, Bordeaux | N/A |
| Completed | Sensing and Defibrillation With a Commercially Available ICD Coupled With a Parasternal Extravascular Lead (SE NCT05352776 | AtaCor Medical, Inc. | N/A |
| Completed | Parasternal Access for ShockS and Pacing With an acUtely Placed Less-invasive Lead for EV-ICD (PASS PULL EV-IC NCT05099289 | AtaCor Medical, Inc. | N/A |
| Enrolling By Invitation | IVTCC 2.0: A Prospective Multicenter Ventricular Tachycardia Catheter Ablation Registry NCT04520347 | University of California, Los Angeles | — |
| Completed | Avoid Transvenous Leads in Appropriate Subjects NCT02881255 | Population Health Research Institute | N/A |
| Unknown | Radiofrequency Ablation of Symptomatic Frequent Ventricular Premature Complexes in Pediatric Population NCT02772354 | Meshalkin Research Institute of Pathology of Circulation | Phase 2 / Phase 3 |
| Terminated | Anti-arrhythmic Therapy vs Catheter Ablation as First Line Treatment for AICD Shock Prevention NCT02114528 | Ottawa Heart Institute Research Corporation | Phase 4 |
| Completed | Evaluating Ventricular Arrhythmia in Subjects With Implantable Cardioverter Defibrillator or Cardiac Resynchro NCT02104583 | Gilead Sciences | Phase 2 |
| Completed | Positive Therapy for Autonomic Function & Mood in ICD Patients NCT02088619 | Medical University of South Carolina | N/A |
| Recruiting | Role of Endomyocardial Biopsy and Aetiology-based Treatment in Pediatric Patients with Inflammatory Heart Dise NCT06591260 | Scientific Institute San Raffaele | — |
| Unknown | Study on Mechanical and Electrical Alternans NCT01281241 | Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) | — |
| Completed | Dose Ranging Study of Celivarone With Amiodarone as Calibrator for the Prevention of Implantable Cardioverter NCT00993382 | Sanofi | Phase 2 |
| Recruiting | Implantable Cardioverter Defibrillator (ICD Registry) NCT01999140 | American College of Cardiology | — |
| Completed | Drug-Induced Sudden Death & Ventricular Arrhythmia NCT00102180 | University of Pennsylvania | — |
| Completed | Genetic Determinants of Sudden Cardiac Death NCT00064558 | Brigham and Women's Hospital | — |
| Completed | Prognostic Significance of T Wave Alternans NCT00006501 | Columbia University | — |
| Completed | Risk Factors in the Initial Presentation of Specific Cardiovascular Disease Syndromes NCT01804439 | University College, London | — |
| Completed | Coronary Artery Bypass Graft (CABG) Patch Trial NCT00000540 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 3 |
| Completed | Heart Rate Variability and Sudden Cardiac Death NCT00005235 | Columbia University | — |
| Completed | Predictors of Perioperative Cardiac Morbidity NCT00005197 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Cardiac Arrhythmia Suppression Trial (CAST) NCT00000526 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 3 |
| Completed | Long QT Syndrome-Population Genetics and Cardiac Studies NCT00005176 | University of Rochester | — |
| Completed | Electrophysiologic Study Versus Electrocardiographic Monitoring (ESVEM) NCT00000518 | University of Utah | Phase 3 |
| Completed | Cardiac Arrhythmia Pilot Study (CAPS) NCT00000504 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 2 |