| Not Yet Recruiting | VT Cryoablation System Post-Market Clinical Follow-up (PMCF) Study NCT06384599 | Adagio Medical | N/A |
| Recruiting | Real-Time Intracardiac Echocardiography for Ventricular Arrhythmia Ablation NCT07201506 | Insel Gruppe AG, University Hospital Bern | N/A |
| Enrolling By Invitation | Functional Substrate-Only Guided VT Ablation NCT06464315 | VA Office of Research and Development | N/A |
| Enrolling By Invitation | CHU Dual-Energy Ablation in Ventricular Arrhythmia NCT07503769 | Shanghai MicroPort EP MedTech Co., Ltd. | N/A |
| Not Yet Recruiting | Evaluation of a Single-lead ECG Patch-based Telemetry System for In-hospital Monitoring NCT07260721 | Yonsei University | N/A |
| Recruiting | Radiotherapy vs Catheter Ablation for Ventricular Tachycardia in Structural Heart Disease NCT06360939 | Western Sydney Local Health District | N/A |
| Recruiting | A Study Assessing Arrhythmia Mapping With a Multi-Electrode Mapping Catheter NCT07116525 | Biosense Webster, Inc. | N/A |
| Recruiting | Cardiac Radioablation for VT NCT06593418 | Corewell Health East | N/A |
| Recruiting | Pulsed Field Ablation for Post-Infarction Ventricular Tachycardia NCT06891456 | Pasquale Santangeli | N/A |
| Recruiting | VT Ablation in the iCMR NCT05543798 | Imricor Medical Systems | N/A |
| Active Not Recruiting | Assessment of a Chronically Implanted Parasternally Delivered EV-ICD Lead (ASCEND EV) Study NCT06592001 | AtaCor Medical, Inc. | N/A |
| Recruiting | Trial in Arrhythmia Radioablation for Ventricular Tachycardia: Single Fraction vs Three Fractions NCT06743789 | Weill Medical College of Cornell University | N/A |
| Recruiting | Ablation-Index Guided Scar-Mediated Ventricular Tachycardia Ablation in Patients With Ischemic Cardiomyopathy NCT06138873 | Rush University Medical Center | N/A |
| Completed | Anesthetic Management in Patients Undergoing Epicardial Ablation NCT06538987 | Eskisehir Osmangazi University | — |
| Not Yet Recruiting | Catheter Ablation of Haemodynamically Not-tolerated Electrical Storm in Structural Heart Disease NCT06455020 | Beijing Anzhen Hospital | N/A |
| Recruiting | Improving Patient Reported Outcome Measures in Catheter Ablation NCT04499326 | Barts & The London NHS Trust | N/A |
| Recruiting | DEEP Substrate Mapping Versus Activation Mapping for VT NCT06371729 | IRCCS Ospedale San Raffaele | N/A |
| Recruiting | International Multicenter Project Comparing Radiofrequency Ablation Versus Implantable Defibrillator After Wel NCT06294028 | University Hospital, Toulouse | N/A |
| Recruiting | Study Evaluating Dexmedetomidine in the Acute Treatment of Electrical Storm NCT06281977 | Ottawa Heart Institute Research Corporation | Phase 3 |
| Recruiting | Ventricular Catheter Ablation Study (VCAS) NCT06203262 | Field Medical | N/A |
| Not Yet Recruiting | MAgnetic Resonance Imaging-guided implanTation of Cardioverter DEFibrillators NCT06269692 | Central Hospital, Nancy, France | N/A |
| Recruiting | Ventricular Arrhythmias in Patients Undergoing Mitral Valve Surgery NCT06255457 | Karolinska Institutet | — |
| Recruiting | END - VT Cohort Study NCT05835791 | Nova Scotia Health Authority | — |
| Recruiting | The Z Stitch Early Bed Rest Assessment Study NCT06087497 | Oregon Health and Science University | N/A |
| Withdrawn | TcMS to Treat Ventricular Tachycardia NCT05016921 | University of Pennsylvania | N/A |
| Recruiting | Defining the Risk of Ventricular Tachycardia in Genetic Forms of Early-onset Atrial Fibrillation NCT06647459 | Vanderbilt University Medical Center | — |
| Recruiting | Defining the Risk of Ventricular Tachycardia in Genetic Cardiomyopathies NCT06575881 | Vanderbilt University Medical Center | — |
| Active Not Recruiting | Future Cardia™ Insertable Cardiac Monitor in Subjects With Paroxysmal Atrial Fibrillation (First-in-Human Stud NCT06167434 | Future Cardia, Inc | N/A |
| Terminated | Effectiveness of CRD-4730 in Participants With Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT) NCT06005428 | Cardurion Pharmaceuticals, Inc. | Phase 2 |
| Unknown | In Silico Pace Mapping To Optimise Ventricular Tachycardia Ablation NCT05500365 | Guy's and St Thomas' NHS Foundation Trust | — |
| Unknown | Ventricular Tachycardia Ablation in LVAD Patients NCT06063811 | Universitätsklinikum Köln | — |
| Completed | Sub Chronic Evaluation for ATP With an Extravascular Placed ICD Lead (STEP ICD) Study NCT05791032 | AtaCor Medical, Inc. | N/A |
| Completed | A Study of Intracardiac Ultrasound With the NUVISION NAV Ultrasound Catheter NCT05970120 | Biosense Webster, Inc. | N/A |
| Recruiting | Coronary Flow During Rapid Heart Rates NCT05841199 | Imperial College London | — |
| Active Not Recruiting | Abbott Ventricular Tachycardia PAS NCT05839873 | Abbott Medical Devices | — |
| Recruiting | Stereotactic Management of Arrhythmia - Radiosurgery Treatment and Evaluation of Response in Ventricular Tachy NCT05913375 | Maria Sklodowska-Curie National Research Institute of Oncology | N/A |
| Enrolling By Invitation | Stereotactic Arrhythmia Radioablation for Ventricular Tachycardia (StAR-VT) NCT05258422 | McGill University Health Centre/Research Institute of the McGill University Health Centre | Phase 2 |
| Recruiting | Cardiac RadiothErapy for VEntricular Tachycardia NCT05973578 | Universitaire Ziekenhuizen KU Leuven | N/A |
| Recruiting | Randomized Assessment of TcMS for VT Storm NCT05599022 | University of Pennsylvania | N/A |
| Recruiting | StereoTactic Arrhythmia Radiotherapy in the NetherLands no. 2 NCT05439031 | Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) | Phase 2 |
| Active Not Recruiting | Assessment of Combined CCM and ICD Device in HFrEF NCT05855135 | Impulse Dynamics | N/A |
| Unknown | VectOr ChAnge defibriLlatIon in Refractory Shockable rhyThms NCT05926973 | Thames Valley Air Ambulance | — |
| Recruiting | Venous Ethanol for Ventricular Tachycardia NCT05511246 | The Methodist Hospital Research Institute | Phase 2 |
| Enrolling By Invitation | Repeated Endocardial Mapping for Efficacy Assessment After Catheter Ablation for Ischemic Ventricular Tachycar NCT05713357 | University Medical Centre Ljubljana | — |
| Recruiting | Stereotactic Ablative Radiotherapy for the Treatment of Refractory Ventricular Tachycardia NCT05696522 | Barts & The London NHS Trust | N/A |
| Withdrawn | Comparison of Ventricular Tachycardia Ablation Strategies in Patients With Ischemic Cardiomyopathy NCT04512911 | Montefiore Medical Center | EARLY_Phase 1 |
| Recruiting | ConTempoRary Cardiac Stimulation in Clinical practicE: lEft, BivEntriculAr, Right, and conDuction System Pacin NCT06324682 | University Hospital of Ferrara | — |
| Recruiting | Catheter Ablation Versus Radio-Ablation for Ventricular Tachycardia: a Randomized Controlled Trial NCT05047198 | Ottawa Heart Institute Research Corporation | Phase 3 |
| Completed | The TRAMPOLINE VT Study NCT05152784 | Barts & The London NHS Trust | N/A |
| Unknown | Electroanatomic Interactions Between Transcatheter Pulmonary Valve Prostheses and Anatomic Isthmuses in Repair NCT05236153 | Boston Children's Hospital | N/A |
| Withdrawn | Noninvasive Cardiac Radioablation for Ventricular Tachycardia Refractory to Medication and Catheter Ablation NCT04757688 | John Stahl | N/A |
| Recruiting | Ventricular Tachycardia Mechanisms NCT05478213 | Emory University | N/A |
| Suspended | Effect of Multielectrode Versus Point-by-Point Mapping on Recurrence of Ventricular Tachycardia in Ischemic He NCT05203484 | Helios Health Institute GmbH | N/A |
| Withdrawn | Utility and Procedural Feasibility of REBOA Operationalized for Non-Trauma Application (UP-FRONT) NCT05236920 | University of Alabama at Birmingham | N/A |
| Completed | Ablation at Virtual-hEart pRedicted Targets for VT NCT03536052 | Johns Hopkins University | N/A |
| Completed | Power Versus Temperature Controlled Ablation for Treatment of VT NCT06028919 | University Hospitals Coventry and Warwickshire NHS Trust | N/A |
| Recruiting | Characterization of Cardiac Electrophysiological Effects of Autonomic Neuromodulation NCT05377216 | University of Pennsylvania | EARLY_Phase 1 |
| Completed | A Study Assessing Arrhythmia Mapping With a Globe-Shaped, High-Density, Multi-Electrode Mapping Catheter NCT05373862 | Biosense Webster, Inc. | N/A |
| Unknown | Risk Stratification of VT / VF After Myocardial Infarction Based on Cardiac MRI 2 NCT05226234 | Central Hospital, Nancy, France | — |
| Unknown | Outcomes of Functional Substrate Mapping of Ventricular Tachycardia NCT05708131 | Mid and South Essex NHS Foundation Trust | — |
| Withdrawn | Percutaneous Inferior Cervical Sympathetic Block for Treatment of Refractory Ventricular Tachycardia NCT04770051 | University of Missouri-Columbia | Phase 1 |
| Recruiting | Dose Escalation for SBRT of Recurrent VT Ventricular Tachyarrhythmia - a Single Center, Phase II Clinical Tria NCT05594368 | University of Zurich | Phase 1 |
| Completed | Computed Tomography-Guided Catheter Ablation for Ventricular Tachycardia NCT05225935 | 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 |
| Terminated | Catheter Ablation of Ventricular Arrhythmia Reduces Skin Sympathetic Activity NCT04837183 | Mayo Clinic | — |
| Completed | VIVO European Observational Registry NCT04990089 | Catheter Precision. Inc. | — |
| Completed | enHEART - Exploring Full Content of Optical Signals to Enhance Cardiac Arrhythmia Screening NCT04884100 | Centre Hospitalier Universitaire Vaudois | N/A |
| Unknown | GANGlion Stellate Block for Treatment of Electric storRm (GANGSTER Trial) NCT05078684 | Institute for Clinical and Experimental Medicine | Phase 3 |
| Unknown | Cardiac Sympathetic Denervation for Prevention of Ventricular Tachyarrhythmias NCT01013714 | University of California, Los Angeles | Phase 3 |
| Active Not Recruiting | SBRT in Chagas Disease Ventricular Tachycardia NCT04984265 | University of Sao Paulo General Hospital | Phase 1 / Phase 2 |
| Recruiting | The Multicenter Cardiology Monitoring Platform Registry NCT04976348 | Maastricht University Medical Center | — |
| Completed | Prospective Cardiac Ultrasound Imaging Study With Demonstrator NCT05850741 | Fondazione IRCCS Policlinico San Matteo di Pavia | N/A |
| Unknown | Preventive VT Substrate Ablation in Ischemic Heart Disease NCT04675073 | Centro Medico Teknon | Phase 3 |
| Recruiting | Cohort Study - SBRT for VT Radioablation NCT04162171 | John Sapp | N/A |
| Completed | Computed Tomography Targets for Efficient Guidance of Catheter Ablation in Ventricular Tachycardia (MAP-IN-HEA NCT04747353 | University Hospital, Bordeaux | N/A |
| Completed | Skin Sympathetic Nerve Activity and Cardiac Arrhythmia NCT04918303 | University Hospital, Bordeaux | N/A |
| Unknown | Observational and Diagnostical Study on Transient Allostatic Responses of Thyroid Function After Cardiopulmona NCT04392258 | Ruhr University of Bochum | — |
| Unknown | South Asian Arrhythmogenic Cardiomyopathy Registry NCT04895540 | Sheri Kashmir Institute of Medical Sciences | — |
| Recruiting | Clinical Cohort Study - TRUST NCT05521451 | Universitätsklinikum Hamburg-Eppendorf | — |
| Completed | Multimodality Assessment of Ventricular Scar Arrhythmogenicity. NCT04632394 | St George's, University of London | — |
| Withdrawn | Ventricular Arrhythmia Ablation With the Use of Non-Invasive ECG Imaging Technology NCT04219501 | Mayo Clinic | N/A |
| Completed | Cardiac Rehab Retrospective Review (CR3) NCT04675957 | Medical University of Graz | — |
| Completed | Cardiopulmonary Resuscitation Performance of Professional Rescuers With a New Defibrillation Algorithm NCT04691089 | French Defence Health Service | — |
| Completed | Application of High Power Radio Frequency Energy in the Ventricular Tachycardia Treatment NCT04657705 | Federal Research Clinical Center of Federal Medical & Biological Agency, Russia | N/A |
| Completed | Vektor vMap™ Clinical Validation Study NCT04559061 | Vektor Medical | — |
| Unknown | Gut Microbiome and Ventricular Arrhythmias NCT04466072 | North Florida Foundation for Research and Education | — |
| Completed | RMN Versus Manual Epicardial Retrospective PMCF NCT04171479 | Stereotaxis | — |
| Completed | STereotactic Ablative Radiosurgery of Recurrent Ventricular Tachycardia in Structural Heart Disease NCT04612140 | University Hospital Ostrava | N/A |
| Terminated | Study of Cardiac PET/CT Imaging to Guide Ablation Treatment of Ventricular Tachycardia NCT02962076 | Khaled Awad, MD | EARLY_Phase 1 |
| Completed | Stereotactic Management of Arrhythmia - Radiosurgery in Treatment of Ventricular Tachycardia NCT04642963 | Maria Sklodowska-Curie National Research Institute of Oncology | N/A |
| Completed | Impact of Catheter Ablation of Ventricular Arrhythmias on Suboptimal Biventricular Pacing in Cardiac Resynchro NCT04065893 | Universitätsklinikum Köln | — |
| Completed | A Clinical Trial Utilizing Dantrolene in Patients With Ventricular Arrhythmias. NCT04134845 | Vanderbilt University Medical Center | Phase 2 / Phase 3 |
| Active Not Recruiting | Prognosis Impact of NSVTs After an AMI (TeVeO Study). NCT04765943 | Fundación Instituto de Estudios de Ciencias de la Salud de Castilla y León | — |
| Completed | Ventricular Tachycardia Ablation and Myocardial Scar Characterization With Magnetic Resonance NCT04694079 | Azienda Ospedaliero, Universitaria Pisana | Phase 4 |
| Unknown | CMR Based Prediction of Ventricular Tachycardia Events in Healed Myocardial Infarction (DEVELOP-VT) NCT04599439 | Centro Medico Teknon | — |
| Active Not Recruiting | Personalized Therapy Study - Intrinsic Antitachycardia Pacing Post-Approval Study (iATP PAS) NCT04496518 | Medtronic | — |
| Recruiting | MANAGE-VT Registry - MANAGEment of Ventricular Tachycardia Outcomes Registry NCT06455488 | CorVita Science Foundation | — |
| Active Not Recruiting | Catheter Ablation Versus Anti-arrhythmic Drugs for Ventricular Tachycardia NCT05524077 | Western Sydney Local Health District | N/A |
| Unknown | Better Mechanistic Understanding of and Risk Stratification for Ventricular Tachyarrhythmias Through ECGI NCT04548804 | Maastricht University Medical Center | N/A |
| Unknown | Acute Cardiovascular Events Triggered by COVID-19-Related Stress NCT04368637 | Jordan Collaborating Cardiology Group | — |
| Completed | Extended ECG Monitoring in HCM Patients NCT04056715 | iRhythm Technologies, Inc. | — |
| Unknown | Electromechanical Profiling of the Long-QT Syndrome (LQTS) NCT04074122 | Maastricht University Medical Center | — |
| Completed | Radiosurgery for the Treatment of Refractory Ventricular Extrasystoles and Tachycardias NCT03867747 | University Hospital Schleswig-Holstein | N/A |
| Recruiting | Peri-Procedural Transmural Electrophysiological (EP) Imaging of Scar-Related Ventricular Tachycardia NCT03713866 | John Sapp | N/A |
| Completed | Magnetic Stimulation to Treat VT Storm NCT04043312 | University of Pennsylvania | N/A |
| Terminated | Unpinning Termination Therapy for VT/VF NCT03871231 | Cardialen, Inc. | N/A |
| Completed | Late Potentials and Ablation Index in Ventricular Tachycardia Ablation NCT03437408 | University Hospital Southampton NHS Foundation Trust | N/A |
| Unknown | VIVO Mapping Protocol NCT03994068 | Royal Brompton & Harefield NHS Foundation Trust | N/A |
| Unknown | Prospective Clinical Registry of Subcutaneous Implantable Cardioverter Defibrillator (S-ICD) (S-ICD Korea Regi NCT04127643 | Yonsei University | — |
| Completed | Ripple Mapping Guided Ablation of Ischaemic Ventricular Tachycardia. NCT03997201 | Imperial College Healthcare NHS Trust | N/A |
| Terminated | Unpinning Termination Therapy for VT (US) NCT03093051 | Cardialen, Inc. | N/A |
| Active Not Recruiting | Targeted Potassium Levels for Prevention of ICD Therapy NCT03833089 | Rigshospitalet, Denmark | Phase 4 |
| Unknown | Post-marketing Registration Study of Nifekalant Hydrochloride (NIF) Injection NCT03853369 | Sichuan Baili Pharmaceutical Co., Ltd. | — |
| Unknown | Evaluation of the Efficacy and Safety of Nifekalant Hydrochloride (NIF) Injection. NCT03855826 | Sichuan Baili Pharmaceutical Co., Ltd. | Phase 4 |
| Completed | Advisor HD Grid Observational Study NCT03733392 | Abbott Medical Devices | — |
| Completed | Modification of the Local Abnormal Ventricular Activity Only NCT05331716 | University of Kiel | — |
| Enrolling By Invitation | IVTCC 2.0: A Prospective Multicenter Ventricular Tachycardia Catheter Ablation Registry NCT04520347 | University of California, Los Angeles | — |
| Completed | Physiologic Pacing Registry NCT03719040 | Abbott Medical Devices | — |
| Completed | Introductory Clinical Trial for Measuring Patients Before, During, and After an Electrophysiology (EP) Procedu NCT03657134 | NYU Langone Health | N/A |
| Completed | The SoundScar Study The SOUNDSCAR Study NCT03862339 | Liverpool Heart and Chest Hospital NHS Foundation Trust | — |
| Completed | SERF VT Ablation Early Feasibility Study (EFS) NCT03628534 | Thermedical, Inc. | N/A |
| Unknown | Creation of a Pace-mapping Atlas on Healthy and Pathological Hearts NCT03611465 | Central Hospital, Nancy, France | N/A |
| Completed | Real-time Automated Program for IDentification of VT Origin NCT03523286 | Amir AbdelWahab | N/A |
| Completed | Evaluation of the iD-SystemTM, One-Handed Disposable Internal Defibrillation System. NCT04011631 | SMART Clinical Products BV | N/A |
| Unknown | Post-Extrasystolic Potentiation as a Predictor of Ventricular Arrhythmias NCT03631303 | Amsterdam UMC, location VUmc | — |
| Completed | Non-invasive Ablation of Ventricular Tachycardia NCT03601832 | University Hospital Ostrava | N/A |
| Withdrawn | Stereotactic Non-invasive Ablation of Ventricular Tachycardia NCT03819504 | University Hospital Ostrava | N/A |
| Unknown | Cryotherapy Versus Radiofrequency Catheter Ablation Research Program NCT03816033 | St. George's Hospital, London | N/A |
| Completed | Assessment of the Sphere-9™ Catheter and Affera Mapping and Ablation System for Treatment of Atrial and Ventri NCT04211441 | Medtronic Cardiac Ablation Solutions | N/A |
| Completed | FLExAbility Sensor Enabled Substrate Targeted Ablation for the Reduction of VT Study NCT03490201 | Abbott Medical Devices | N/A |
| Terminated | Initial Management of Patients Receiving a Single Shock (IMPRESS) NCT03531502 | Saint Luke's Health System | N/A |
| Unknown | SMART Identification of Ventricular Tachycardia Isthmus NCT04852497 | Central Hospital, Nancy, France | — |
| Recruiting | Mayo AVC Registry and Biobank NCT03049254 | Mayo Clinic | — |
| Completed | Impact of PREVENTIVE Substrate Ablation of Coronary Chronic Total Occlusion on Implantable cardioVerTer-Defibr NCT03421834 | University Medical Centre Ljubljana | N/A |
| Unknown | PASO Automated Template Matching for PVC Ablation NCT04778696 | Universitätsklinikum Köln | N/A |
| Completed | VIVO™ Accuracy Study NCT03340142 | Catheter Precision. Inc. | N/A |
| Completed | Rook Epicardial Access Device Study NCT03427333 | Talon Surgical | N/A |
| Completed | Tachy Prediction Download Study NCT03402126 | Medtronic Cardiac Rhythm and Heart Failure | — |
| Completed | Surpoint Algorithm for Improved Guidance of Ablation for Ventricular Tachycardia NCT05618717 | Rush University Medical Center | — |
| Recruiting | In-hospital Stellate Ganglion Block for Arrhythmic Storm NCT05720936 | Fondazione IRCCS Policlinico San Matteo di Pavia | — |
| Unknown | Modification of Rhythmic Risk Assessment by Ventricular Tachycardia Ablation NCT03453645 | University Hospital, Toulouse | — |
| Unknown | Biomarkers in Risk Stratification of Sustainted Ventricular Tachycardia or Electrical Storm After Ablation NCT02784912 | Medical University of Warsaw | — |
| Unknown | "Ventricular Tachycardia Ablation Registry". NCT03649022 | Paolo Della Bella | — |
| Completed | Arrhythmias in Post-Myocardial Infarction Patients NCT03231826 | Tampere University | — |
| Unknown | Catheter Ablation for Nonsustained Ventricular Tachycardia in Patients With Ischemic Cardiomyopathy NCT03147027 | Heinrich-Heine University, Duesseldorf | — |
| Completed | DOACs for Stroke Prevention Post Ventricular Tachycardia Ablation NCT02666742 | Kansas City Heart Rhythm Institute | Phase 4 |
| Completed | Emotional Regulation in Patients With Implanted Automatic Defibrillator NCT04235881 | Instituto de Investigación Hospital Universitario La Paz | N/A |
| Withdrawn | Calmodulin Gene Mutations in Patients With Ventricular Arrhythmia of Unknown Origin - A Screening Study NCT01947543 | Region Örebro County | — |
| Withdrawn | Effect of Right Ventricular Lead Position on Defibrillation Threshold NCT02844127 | OhioHealth | N/A |
| Completed | Intramural Needle Ablation for Ablation of Recurrent Ventricular Tachycardia NCT01791543 | William Stevenson | N/A |
| Completed | Phase I/II Study of EP-guided Noninvasive Cardiac Radioablation for Treatment of Ventricular Tachycardia NCT02919618 | Washington University School of Medicine | Phase 1 / Phase 2 |
| Unknown | Prophylactic Substrate Ablation in Post-myocardial Patients Undergoing Defibrillator Implantation. NCT02780947 | Spyridon Deftereos | N/A |
| Unknown | Registry of Malignant Arrhythmias and Sudden Cardiac Death - Influence of Diagnostics and Interventions NCT02982473 | Universitätsmedizin Mannheim | — |
| Completed | To Determine Optimal Time for Delivering Electrical Shocks to Cardiac Arrest Patients NCT01665755 | Singapore General Hospital | N/A |
| Unknown | Amiodarone Usage After Ischemic Ventricular Tachycardia Ablation NCT03244748 | Yuksek Ihtisas Hospital | — |
| Completed | REnal SympathetiC Denervation to sUpprEss Tachyarrhythmias in ICD Recipients NCT01747837 | Vivek Reddy | N/A |
| Terminated | Low Energy Therapy to Convert Ventricular Tachycardias NCT02891863 | Boston Scientific Corporation | EARLY_Phase 1 |
| Terminated | Preventive aBlation of vEntricular tachycaRdia in Patients With myocardiaL INfarction NCT02501005 | Biotronik SE & Co. KG | N/A |
| Completed | Understanding Outcomes With the EMBLEM™ S-ICD in Primary Prevention Patients With Low Ejection Fraction NCT02433379 | Boston Scientific Corporation | N/A |
| Completed | Safety of Local Dental Anesthesia in Patients With Cardiac Channelopathies NCT03182777 | University of Sao Paulo General Hospital | N/A |
| Unknown | Ventricular Tachycardia in Ischemic Cardiomyopathy; a Combined Endo-Epicardial Ablation Within the First Proce NCT02358746 | Erasmus Medical Center | N/A |
| Completed | Bipolar Ventricular Tachycardia (VT) Study NCT02374476 | Srinivas Dukkipati | N/A |
| Completed | PREVENTION-ACHD Risk Score NCT03957824 | Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) | — |
| Completed | An Assessment of Dual Site Left Ventricular Endocardial Pacing NCT02211456 | Oxford University Hospitals NHS Trust | N/A |
| Unknown | Austrian Wearable Cardioverter Defibrillator Registry NCT02816047 | Medical University of Graz | — |
| Unknown | Physiologically Guided VT Ablation NCT04004624 | Center for Cardiovascular Reseach and Innovation | N/A |
| Terminated | Anti-arrhythmic Therapy vs Catheter Ablation as First Line Treatment for AICD Shock Prevention NCT02114528 | Ottawa Heart Institute Research Corporation | Phase 4 |
| Completed | Inducibility and Stability of Ventricular Tachycardia Inpatients Undergoing VT Ablation Under General Anesthes NCT02419547 | Brigham and Women's Hospital | N/A |
| Completed | Ultra-high Density Mapping With Multielectrode Catheter vs Conventional Point by Point Mapping for Ventricular NCT02083016 | Hospital Clinic of Barcelona | Phase 4 |
| Completed | MRI Assessment of Arrythmia Ablation Lesions NCT02761343 | Children's National Research Institute | N/A |
| Completed | SD01 Registry (SD01 ICD Lead) NCT02014675 | Biotronik SE & Co. KG | — |
| Terminated | Renal Denervation In Patient Undergoing VT Ablation:Combined Renal Denervation and VT Ablation vs. Simply VT A NCT02071511 | Universitätsklinikum Hamburg-Eppendorf | N/A |
| Unknown | Fibrillatory Factor in Ventricular Tachycardia NCT01974908 | Guy's and St Thomas' NHS Foundation Trust | N/A |
| Completed | Vein of Marshall Ethanol Infusion for Persistent Atrial Fibrillation NCT01898221 | The Methodist Hospital Research Institute | Phase 3 |
| Unknown | Italian Registry On Multipoint Left Ventricular Pacing NCT02606071 | University of Rome Tor Vergata | — |
| Unknown | Feasibility of Contact Force Catheter Mapping and Ablation in Epicardial and Endocardial Ventricular Tachycard NCT01847378 | Federal University of São Paulo | — |
| Unknown | Botulinum Toxin Injection to Prevent Ventricular Arrhythmias NCT02003001 | Meshalkin Research Institute of Pathology of Circulation | Phase 1 |
| Completed | SD01 Master Study (Safety and Efficacy Study) NCT01836497 | Biotronik SE & Co. KG | — |
| Withdrawn | Trial Comparing Ablation With Medical Therapy in Patients With Ventricular Tachycardia NCT01798277 | Newmarket Electrophysiology Research Group Inc | Phase 3 |
| Completed | REnal Sympathetic dEnervaTion as an a Adjunct to Catheter-based VT Ablation NCT01858194 | Vivek Reddy | N/A |
| Completed | Contrast ICE for Myocardial Scar in VT Ablations NCT03212326 | Weill Medical College of Cornell University | N/A |
| Unknown | A Feasibility Study on Prediction of an ICD Shock by ICD-derived Data NCT01822145 | Princess Margaret Hospital, Hong Kong | — |
| Completed | DF4 Master Study (Safety and Efficacy Study) NCT01790841 | Biotronik SE & Co. KG | — |
| Unknown | Catheter Ablation Versus Antiarrhythmic Drugs for Outflow Tract Ventricular ARrhythmias NCT01780311 | Ospedale San Donato | Phase 4 |
| Completed | Efficacy and Safety of Multisite Cardiac Resynchronization Therapy NCT01966016 | Barzilai Medical Center | N/A |
| Unknown | Endo- and Epicardial vs. Endocardial Ablation of Ventricular Tachycardia in Patients With Cardiac Disease NCT01767220 | University of Rostock | N/A |
| Completed | Brain Perfusion and Hemodynamic Stability in Patients Undergoing Radiofrequency Ablation of Ventricular Tachyc NCT01695551 | Dhanunjaya Lakkireddy, MD, FACC | — |
| Terminated | Early Ablation Therapy for the Treatment of Ischemic Ventricular Tachycardia in Patients With Implantable Card NCT01557842 | Biosense Webster, Inc. | Phase 4 |
| Withdrawn | Anti-arrhythmic Medication v. MRI-Merge Ablation in the Treatment of Ventricular Tachycardia NCT00721032 | Johns Hopkins University | N/A |
| Completed | Circulating Biomarkers and Ventricular Tachyarrhythmia NCT01892462 | Ochsner Health System | — |
| Terminated | Pilot Study of Catheter Ablation for Ventricular Tachycardia in Patients With an Implantable Cardioverter Defi NCT01576042 | Duke University | N/A |
| Terminated | Randomized Double Blind Control Trial on Effects of Ranolazine on New Onset Atrial Fibrillation NCT01590979 | Northwell Health | N/A |
| Completed | Ability of Home Monitoring® to Detect and Manage the Inappropriate Diagnoses in Implantable Cardioverter Defib NCT01594112 | Biotronik SE & Co. KG | — |
| Completed | DF4 Connector System Post-Approval Study NCT01638897 | Medtronic | — |
| Unknown | Safety of Amiodarone and Ranolazine Together in Patients With Angina NCT01558830 | Cardiovascular Consultants of Nevada | Phase 4 |
| Completed | A Study of Early Robotic Ablation by Substrate Elimination of Ventricular Tachycardia NCT01182389 | Imperial College London | N/A |
| Unknown | Zero-fluoroscopic Ablation Versus Conventional Fluoroscopic Ablation for the Treatment of Ventricular Arrhythm NCT03041519 | Tongji Hospital | N/A |
| Terminated | Stepwise Approach To sUbstrate Modification for Ventricular Tachycardia NCT01546207 | Vivek Reddy | N/A |
| Completed | Study of the Wearable Defibrillator in Heart-Failure Patients NCT01326624 | Zoll Medical Corporation | — |
| Terminated | Stereotaxis Idiopathic Ventricular Tachycardia (VT) Study NCT01401608 | Stereotaxis | — |
| Terminated | LifeVest Post-CABG Registry NCT01448005 | Zoll Medical Corporation | — |
| Recruiting | Registry of Device Implantation NCT03360227 | Klinik für Kardiologie, Pneumologie und Angiologie | — |
| Completed | Percutaneous Hemodynamic Support With Impella 2.5 During Scar-related Ventricular Tachycardia Ablation NCT01294267 | Vivek Reddy | N/A |
| Completed | Testing Objective Methods for Template Matching Ventricular Tachycardia and Pacemapping NCT01170416 | John Sapp | — |
| Completed | Clinical Study to Evaluate the Catheter Robotics Amigo for Performing Right-Sided Electrophysiology Mapping St NCT01139814 | Catheter Robotics, Inc. | N/A |
| Completed | Imaging With a Radio Tracer to Guide VT Ablations NCT01250912 | University of Maryland, Baltimore | N/A |
| Completed | Ablation of Clinical Ventricular Tachycardia Versus Addition of Substrate Ablation on the Long Term Success Ra NCT01045668 | Texas Cardiac Arrhythmia Research Foundation | Phase 3 |
| Terminated | INTERVENE: Indian Trial of Endocardial Ventricular Substrate Ablation to Prevent Recurrent VT Events NCT02301390 | Icahn School of Medicine at Mount Sinai | N/A |
| Completed | Stereotaxis Study To Obliterate Persistent Ventricular Tachycardia NCT00851279 | Stereotaxis | Phase 4 |
| Completed | Shockless Implant Evaluation NCT00800384 | Boston Scientific Corporation | N/A |
| Completed | AVAI: Atrial Ventricular Arrythmia Incidence NCT00832975 | Abbott Medical Devices | — |
| Completed | Comparison of Right Ventricular Septal and Right Ventricular Apical Pacing in Patients Receiving a CRT-D Devic NCT00833352 | Guidant Corporation | N/A |
| Completed | The Use of Dual Chamber ICD With Special Programmed Features to Lower the Risk of Inappropriate Shock NCT00787800 | Mayo Clinic | Phase 4 |
| Completed | Septal Positioning of Ventricular Implanted Cardioverter Defibrillator (ICD) Leads NCT00745745 | Abbott Medical Devices | N/A |
| Terminated | Implantable Cardioverter Defibrillator (ICD) Support Groups and Veterans NCT00846417 | Emory University | — |
| Completed | Vest Prevention of Early Sudden Death Trial and VEST Registry NCT01446965 | University of California, San Francisco | N/A |
| Completed | Feature Assessment Study for Indications Based Programming NCT00711893 | Boston Scientific Corporation | — |
| Completed | Exercise Training in ICD Recipients; Effect on Therapy Delivered, Depression and Anxiety NCT01038960 | Helse Stavanger HF | Phase 3 |
| Completed | Compare Remote Patient Management and Standard Care in CRT-D and ICD-patients to Assess the Effect on Heart Fa NCT00730548 | Medtronic Cardiac Rhythm and Heart Failure | N/A |
| Completed | Impact of Ventricular Pacing in Unselected ICD/CRT-D Patients NCT01169896 | LivaNova | — |
| Completed | Intravenous n-3 Fatty Acids and Ventricular Tachycardia in Patients With Implantable Cardioverter Defibrillato NCT00534300 | Aalborg University Hospital | Phase 1 / Phase 2 |
| Completed | Left Ventricular Capture Management Study NCT01089634 | Medtronic Cardiac Rhythm and Heart Failure | — |
| Completed | Influence of Home Monitoring on the Clinical Status of Heart Failure Patients With an Impaired Left Ventricula NCT00538356 | Biotronik SE & Co. KG | Phase 4 |
| Terminated | Ablation for ICD Intervention Reduction in Patients With CAD NCT00481377 | National Institute of Cardiology, Warsaw, Poland | N/A |
| Completed | Genetic Substudy of the Alternans Before Cardioverter Defibrillator (ABCD) Trial NCT00583297 | CardioDx | — |
| Completed | Catheter Evaluation for Endocardial Ablation in Patients With Ventricular Tachycardia NCT00412607 | Biosense Webster, Inc. | Phase 4 |
| Completed | Further Acute Research of a Subcutaneous Implantable Defibrillator (S-ICD) System NCT00399217 | Boston Scientific Corporation | — |
| Terminated | The Use of CT to Identify Damaged Heart Muscle in Patients Undergoing Ventricular Tachycardia Ablation. NCT00583284 | The Cleveland Clinic | — |
| Terminated | Pediatric Lead Extractability and Survival Evaluation (PLEASE) NCT00335036 | Charles Berul | N/A |
| Withdrawn | Clonidine to Prevent Implantable Cardiovertor Defibrillator Firing NCT00585871 | James Martins | N/A |
| Completed | First Arrhythmia Collection of Transvenous and Simultaneous Subcutaneous Implantable Defibrillator Data NCT01161589 | Boston Scientific Corporation | — |
| Terminated | Iv Amiodarone Versus Iv Procainamide to Treat Haemodynamically Well Tolerated Ventricular Tachycardia NCT00383799 | Hospital General Universitario Gregorio Marañon | Phase 4 |
| Completed | Septal - Success Rate and Clinical Outcome of Septal Implant of Ventricular Defibrillation Lead NCT00180297 | Boston Scientific Corporation | N/A |
| Completed | Leader - Evaluation of Endotak Reliance NCT00180349 | Boston Scientific Corporation | — |
| Completed | INSIGHTS ICD Registry NCT00279968 | Medtronic Cardiac Rhythm and Heart Failure | — |
| Completed | Remote Follow-up of Patients Receiving Implantable Cardioverter Defibrillator for Prophylactic Therapy NCT00401466 | Biotronik SE & Co. KG | Phase 4 |
| Completed | MAVRIC VR ICD Registry NCT00270933 | Medtronic Cardiac Rhythm and Heart Failure | — |
| Completed | DAVID II (Dual Chamber and VVI Implantable Defibrillator (DAVID) Trial II) NCT00187187 | Abbott Medical Devices | N/A |
| Completed | Substrate Modification in Stable Ventricular Tachycardia in Addition to Implantable Cardioverter Defibrillator NCT00919373 | Abbott Medical Devices | N/A |
| Completed | OPERA: French Observational Study on Patients Implanted With a Guidant PRIZM or Vitality Defibrillator NCT00180375 | Boston Scientific Corporation | — |
| Completed | Optimal Pharmacological Therapy In Implantable Defibrillator Patients (OPTIC) NCT00257959 | Connolly, Stuart, M.D. | Phase 4 |
| Completed | DATAS: The Dual Chamber & Atrial Tachyarrhythmias Adverse Events Study NCT00157820 | Medtronic Cardiac Rhythm and Heart Failure | N/A |
| Completed | Extracorporeal Membrane Oxygenation Effect in Prolonged Cardiopulmonary Resuscitation NCT00173615 | National Taiwan University Hospital | — |
| Unknown | Investigation of Cognitive Function Before and After Induced Ventricular Fibrillation in Electrophysiological NCT00176176 | Heidelberg University | N/A |