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Showing 1–24 of 313 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Arrhythmia, Ventricular Clear all
Completed No phase listed Observational

Heart Rate Variability and Sudden Cardiac Death

NCT00005235
View directory record Official record
Conditions
Cardiovascular Diseases, Coronary Disease, Heart Diseases, Myocardial Infarction, Death, Sudden, Cardiac, Ventricular Arrhythmia
Interventions
Not listed
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
715 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1988 – 1993
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 23, 2015 · Synced Sep 14, 2026, 5:08 PM EDT
Completed Not applicable Interventional Results available

Electrophysiological Effects of Late PCI After MI

NCT00119847
View directory record Official record
Conditions
Cardiovascular Diseases, Heart Diseases, Myocardial Infarction, Coronary Disease, Arrhythmia, Ventricular Fibrillation
Interventions
PCI, Optimal Medical Therapy
Procedure · Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
Not listed
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated May 17, 2022 · Synced Sep 14, 2026, 5:08 PM EDT
Completed Not applicable Interventional Results available

Stereotactic Ablative Radiotherapy for Refractory Ventricular Tachycardia

NCT03349892
View directory record Official record
Conditions
Refractory Ventricular Tachycardia
Interventions
Stereotactic Ablative Radiotherapy (SABR)
Radiation
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 14, 2021 · Synced Sep 14, 2026, 5:08 PM EDT
Not listed No phase listed Observational

South Asian Arrhythmogenic Cardiomyopathy Registry

NCT04895540
View directory record Official record
Conditions
Arrhythmogenic Right Ventricular Cardiomyopathy, Arrhythmogenic Right Ventricular Dysplasia, Arrhythmogenic Ventricular Cardiomyopathy, Arrhythmogenic Cardiomyopathy, Ventricular Tachycardia, Sudden Cardiac Death
Interventions
ECG, Echocardiography, Cardiac MRI, Ambulatory ECG recording, Cardiac EP study, All study subjects will undergo sample collection for genetic testing.
Diagnostic Test · Genetic
Lead sponsor
Sheri Kashmir Institute of Medical Sciences
Other
Eligibility
Not listed
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 1, 2021 · Synced Sep 14, 2026, 5:08 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Development of CIRC Technologies

NCT05654272
View directory record Official record
Conditions
Cardiovascular Diseases, Heart Failure, Ischemic Heart Disease, Non-ischemic Cardiomyopathy, Valvular Heart Disease, Metabolic Cardiomyopathy, Congenital Heart Disease, Aortic Diseases, Atrial Fibrillation, Ventricular Fibrillation
Interventions
MRI
Diagnostic Test
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2042
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Sep 14, 2026, 5:08 PM EDT
Terminated Not applicable Interventional

STandardized Ultra-conservative Or Physician-directed ICD Programming for Continuous Flow LVAD Support

NCT04264182
View directory record Official record
Conditions
Heart Failure, Systolic, Left Ventricular Assist Device, ICD
Interventions
ICD programming
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 7, 2022 · Synced Sep 14, 2026, 5:08 PM EDT
Completed Not applicable Interventional

Optimal Coronary Sinus Lead Implantation Using Intracardiac Impedography and Magnetic Resonance Imaging

NCT01129635
View directory record Official record
Conditions
Heart Failure, Systolic, Left Bundle Branch Block
Interventions
Cardiac Resynchronization Therapy (CRT) implantation
Procedure
Lead sponsor
Emory University
Other
Eligibility
Not listed
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 20, 2015 · Synced Sep 14, 2026, 5:08 PM EDT
Completed Phase 4 Interventional Results available

Stereotaxis Study To Obliterate Persistent Ventricular Tachycardia

NCT00851279
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Magnetic irrigated ablation catheter
Device
Lead sponsor
Stereotaxis
Industry
Eligibility
18 Years to 80 Years
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
2
States / cities
Indianapolis, Indiana • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 23, 2015 · Synced Sep 14, 2026, 5:08 PM EDT
Completed Not applicable Interventional Results available

Percutaneous Hemodynamic Support With Impella 2.5 During Scar-related Ventricular Tachycardia Ablation

NCT01294267
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Circulatory Support System
Device
Lead sponsor
Vivek Reddy
Other
Eligibility
18 Years to 90 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 13, 2018 · Synced Sep 14, 2026, 5:08 PM EDT
Completed Not applicable Interventional Results available

REnal SympathetiC Denervation to sUpprEss Tachyarrhythmias in ICD Recipients

NCT01747837
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Boston Scientific Vessix Renal Denervation System
Device
Lead sponsor
Vivek Reddy
Other
Eligibility
18 Years to 85 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
2
States / cities
New York, New York • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Mar 3, 2020 · Synced Sep 14, 2026, 5:08 PM EDT
Terminated No phase listed Observational

LifeVest Post-CABG Registry

NCT01448005
View directory record Official record
Conditions
Sudden Cardiac Death, Ventricular Fibrillation, Ventricular Tachycardia, Ventricular Dysfunction, Myocardial Ischemia
Interventions
wearable defibrillator (LifeVest)
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
5
States / cities
Sacramento, California • Atlanta, Georgia • Takoma Park, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 5, 2017 · Synced Sep 14, 2026, 5:08 PM EDT
Recruiting Not applicable Interventional

Ventricular Tachycardia Mechanisms

NCT05478213
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Monophasic Action Potential (MAP) Catheter
Device
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
3
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Sep 14, 2026, 5:08 PM EDT
Completed Phase 1 Interventional

Micra Atrial Tracking Using a Ventricular Accelerometer Study

NCT03157297
View directory record Official record
Conditions
Atrioventricular Conduction Block
Interventions
MARVEL algorithm
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
4
States / cities
Jacksonville, Florida • Miami, Florida • Atlanta, Georgia + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 25, 2018 · Synced Sep 14, 2026, 5:08 PM EDT
Completed Phase 4 Interventional

Antiarrhythmics or Ablation for Ventricular Tachycardia 2

NCT02830360
View directory record Official record
Conditions
Ventricular Tachycardia (VT)
Interventions
Antiarrythmic Drug Therapy, Catheter ablation
Drug · Procedure
Lead sponsor
John Sapp
Other
Eligibility
18 Years and older
Enrollment
416 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2024
U.S. locations
2
States / cities
Hartford, Connecticut • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 31, 2024 · Synced Sep 14, 2026, 5:08 PM EDT
Enrolling by invitation Not applicable Interventional

EDEN Intracardiac Electrogram Recording and Classifying System

NCT07137455
View directory record Official record
Conditions
Ventricular Arrhythmia
Interventions
EDEN Intracardiac Electrogram Recording and Classifying System
Device
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
21 Years to 100 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 13, 2026 · Synced Sep 14, 2026, 5:08 PM EDT
Completed No phase listed Observational

Common Sensing and Right Ventricular Automatic Capture (COGNATE)

NCT01030705
View directory record Official record
Conditions
Bradycardia, Chronotropic Incompetence
Interventions
Not listed
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
5
States / cities
Cedar Rapids, Iowa • Lincoln, Nebraska • Pittsburgh, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2011 · Synced Sep 14, 2026, 5:08 PM EDT
Completed Not applicable Interventional Results available

Micra Atrial TRacking Using A Ventricular AccELerometer 2

NCT03752151
View directory record Official record
Conditions
Atrioventricular Conduction Block
Interventions
MARVEL 2 Algorithm Monitor Mode then Adaptive Mode
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
5
States / cities
Jacksonville, Florida • Miami, Florida • Manhasset, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2020 · Synced Sep 14, 2026, 5:08 PM EDT
Completed Not applicable Interventional Results available

REnal Sympathetic dEnervaTion as an a Adjunct to Catheter-based VT Ablation

NCT01858194
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Renal sympathetic denervation, VT ablation alone
Device
Lead sponsor
Vivek Reddy
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 16, 2020 · Synced Sep 14, 2026, 5:08 PM EDT
Completed Not applicable Interventional

SmartCPR Trial: An Analysis of a Waveform-Based Automated External Defibrillation (AED) Algorithm on Survival From Out-of-Hospital Ventricular Fibrillation

NCT00535106
View directory record Official record
Conditions
Ventricular Fibrillation, Cardiac Arrest
Interventions
Automated external defibrillator (Philips FR2+ AED), SmartCPR, Delayed defibrillation
Device · Other
Lead sponsor
New York City Fire Department
Government
Eligibility
Not listed
Enrollment
900 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 18, 2009 · Synced Sep 14, 2026, 5:08 PM EDT
Completed No phase listed Observational

The Signal-averaged ElectrocArdiogram in Long Term Follow-up of Chronic CHagas Disease - RIO de Janeiro Cohort

NCT01340963
View directory record Official record
Conditions
Chagas Cardiomyopathy, Cardiac Arrhythmia, Stroke, Left Ventricular Function Systolic Dysfunction, Cardiac Death
Interventions
Not listed
Lead sponsor
Universidade Gama Filho
Other
Eligibility
18 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1995 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 9, 2013 · Synced Sep 14, 2026, 5:08 PM EDT
Terminated Phase 3 Interventional Results available

Catheter Ablation Versus Amiodarone for Shock Prophylaxis in Defibrillator Patients With Ventricular Tachycardia

NCT01097330
View directory record Official record
Conditions
Defibrillators, Implantable, Tachycardia, Ventricular
Interventions
Ablation, Amiodarone
Procedure · Drug
Lead sponsor
Population Health Research Institute
Other
Eligibility
19 Years to 84 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
5
States / cities
Chicago, Illinois • Rochester, Minnesota • Philadelphia, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 28, 2020 · Synced Sep 14, 2026, 5:08 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Influence of Progesterone Administration on Drug-Induced QT Interval Lengthening

NCT01929083
View directory record Official record
Conditions
Prolonged QT Interval in EKG and Sudden Death
Interventions
Progesterone, Placebo, Ibutilide
Drug
Lead sponsor
Indiana University
Other
Eligibility
21 Years to 40 Years · Female only
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
2
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 29, 2015 · Synced Sep 14, 2026, 5:08 PM EDT
Not listed Not applicable Interventional

A PRospective, rAndomizEd Comparison of subcuTaneOous and tRansvenous ImplANtable Cardioverter Defibrillator Therapy

NCT01296022
View directory record Official record
Conditions
Ventricular Arrhythmias
Interventions
Implantation of subcutaneous ICD, Implantation of transvenous ICD
Device
Lead sponsor
Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Other
Eligibility
18 Years and older
Enrollment
850 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2023
U.S. locations
10
States / cities
New Haven, Connecticut • Atlanta, Georgia • Chicago, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated May 8, 2023 · Synced Sep 14, 2026, 5:08 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Mayo AVC Registry and Biobank

NCT03049254
View directory record Official record
Conditions
Arrhythmogenic Right Ventricular Cardiomyopathy, Cardiomyopathies, Heart Diseases, Cardiovascular Diseases, Sudden Cardiac Arrest, Sudden Cardiac Death, Arrhythmogenic Right Ventricular Dysplasia, Arrhythmogenic Ventricular Cardiomyopathy, Familial Dilated Cardiomyopathy, Cardiovascular Abnormalities, Sarcoidosis, Cardiac Arrhythmia, Cardiac Sarcoidosis, Myocarditis, Inflammatory Cardiomyopathy, Ventricular Tachycardia, Right Ventricular Outflow Tract Ventricular Tachycardia
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
Not listed
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 26, 2026 · Synced Sep 14, 2026, 5:08 PM EDT