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Showing 1–24 of 97 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Fibrillation, Ventricular Clear all
Completed No phase listed Observational

Medtronic Genetic Arrhythmia Markers for Early Detection (GAME Study)

NCT00664807
View directory record Official record
Conditions
Death, Sudden, Cardiac, Ventricular Fibrillation, Tachycardia, Atrial Fibrillation, Sick Sinus Syndrome
Interventions
Not listed
Lead sponsor
Medtronic Corporate Technologies and New Ventures
Industry
Eligibility
40 Years and older
Enrollment
1,023 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Aug 24, 2009 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional

CyberHeart's Cardiac Arrhythmia Ablation Treatment: Patients With Refractory Ventricular Tachycardia/Fibrillation

NCT02661048
View directory record Official record
Conditions
Tachycardia, Ventricular
Interventions
CyberHeart System
Device
Lead sponsor
Varian, a Siemens Healthineers Company
Industry
Eligibility
60 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 6, 2023 · Synced Jul 21, 2026, 11:19 AM EDT
Terminated Not applicable Interventional Results available

ACCESS to the Cardiac Cath Lab in Patients Without STEMI Resuscitated From Out-of-hospital VT/VF Cardiac Arrest

NCT03119571
View directory record Official record
Conditions
Cardiac Arrest Due to Underlying Cardiac Condition, Ventricular Fibrillation, Cardiopulmonary Arrest With Successful Resuscitation
Interventions
Initial CCL admission, Initial ICU admission
Procedure · Diagnostic Test
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 75 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
21
States / cities
Atlanta, Georgia • Indianapolis, Indiana • Ann Arbor, Michigan + 14 more
Source: ClinicalTrials.gov public record
Updated Jan 26, 2021 · Synced Jul 21, 2026, 11:19 AM EDT
Completed No phase listed Observational

Propagation ANalysis for Arrhythmogenic Conduction Elimination to Prevent Atrial Flutter and Fibrillation (PANACEA-AF)

NCT03737838
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Atrial fibrillation ablation
Device
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Jul 21, 2026, 11:19 AM EDT
Completed No phase listed Observational

Novel Cardiac Signal Processing System

NCT04112433
View directory record Official record
Conditions
Cardiac Arrhythmia
Interventions
PURE EP 2
Device
Lead sponsor
BioSig Technologies, Inc.
Industry
Eligibility
18 Years and older
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
3
States / cities
Jacksonville, Florida • Boston, Massachusetts • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Feb 10, 2022 · Synced Jul 21, 2026, 11:19 AM 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 Jul 21, 2026, 11:19 AM EDT
Recruiting Not applicable Interventional

Implanted Loop Recorders for Detection and Management of Arrhythmia With Bruton Tyrosine Kinase Inhibitors

NCT05643235
View directory record Official record
Conditions
Atrial Fibrillation, Supraventricular Arrhythmia, Ventricular Arrhythmias and Cardiac Arrest, Chronic Lymphocytic Leukemia, Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma
Interventions
Medtronic LINQ-2 Insertable Cardiac Monitor (ILR)
Device
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
1
States / cities
New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Sep 17, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Results available

WATCH-TAVR, WATCHMAN for Patients With Atrial Fibrillation Undergoing Transcatheter Aortic Valve Replacement

NCT03173534
View directory record Official record
Conditions
Atrial Fibrillation, Aortic Valve Stenosis
Interventions
WATCHMAN, TAVR
Device
Lead sponsor
samir kapadia
Other
Eligibility
18 Years and older
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
32
States / cities
Phoenix, Arizona • Burlingame, California • Santa Barbara, California + 27 more
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Jul 21, 2026, 11:19 AM EDT
Completed No phase listed Observational

Extended ECG Monitoring in HCM Patients

NCT04056715
View directory record Official record
Conditions
Hypertrophic Cardiomyopathy, Nonsustained Ventricular Tachycardia, Ventricular Tachycardia, Atrial Fibrillation, Arrhythmia
Interventions
Zio XT
Device
Lead sponsor
iRhythm Technologies, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 28, 2023 · Synced Jul 21, 2026, 11:19 AM EDT
Completed No phase listed Observational

Circulating Biomarkers and Ventricular Tachyarrhythmia

NCT01892462
View directory record Official record
Conditions
Cardiomyopathy, Ventricular Tachycardia, Ventricular Fibrillation
Interventions
Not listed
Lead sponsor
Ochsner Health System
Other
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Apr 6, 2017 · Synced Jul 21, 2026, 11:19 AM EDT
Completed No phase listed Observational

Precision Event Monitoring for Patients With Heart Failure Using HeartLogic

NCT03579641
View directory record Official record
Conditions
Heart Failure, Defibrillators, Implantable, Monitoring, Physiologic, Cardiac Resynchronization Therapy, Cardiovascular Disease, Heart Disease
Interventions
HeartLogic Sensors
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
2,184 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
56
States / cities
Birmingham, Alabama • Jonesboro, Arkansas • Little Rock, Arkansas + 48 more
Source: ClinicalTrials.gov public record
Updated Oct 24, 2022 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Phase 1 Interventional

Pilot Study of Sodium Nitrite in Resuscitated Cardiac Arrest Patients

NCT01178359
View directory record Official record
Conditions
Cardiac Arrest
Interventions
nitrite
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 17, 2017 · Synced Jul 21, 2026, 11:19 AM EDT
Terminated Not applicable Interventional Results available

Randomized Double Blind Control Trial on Effects of Ranolazine on New Onset Atrial Fibrillation

NCT01590979
View directory record Official record
Conditions
Atrial Fibrillation New Onset, Hemorrhage, Prolonged QTc Interval, Ventricular Tachycardia, Medical Care; Complications, Late Effect of Complications
Interventions
Ranolazine, Placebo
Drug
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Staten Island, New York
Source: ClinicalTrials.gov public record
Updated Mar 22, 2017 · Synced Jul 21, 2026, 11:19 AM EDT
Completed No phase listed Observational Results available

EnSite Precision Observational Study

NCT03260244
View directory record Official record
Conditions
Cardiac Arrhythmia
Interventions
cardiac mapping and radiofrequency ablation procedure
Procedure
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,065 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
7
States / cities
Birmingham, Alabama • Jonesboro, Arkansas • Little Rock, Arkansas + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 7, 2024 · Synced Jul 21, 2026, 11:19 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Defining the Risk of Ventricular Tachycardia in Genetic Forms of Early-onset Atrial Fibrillation

NCT06647459
View directory record Official record
Conditions
Ventricular Tachycardia, Atrial Fibrillation
Interventions
EP Study
Diagnostic Test
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Phase 4 Interventional Results available

Antiarrhythmic Effects of Spironolactone in Patients With ICDs

NCT04495712
View directory record Official record
Conditions
Ventricular Arrhythmias
Interventions
spironolactone, placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Jul 21, 2026, 11:19 AM EDT
Withdrawn No phase listed Observational

Selective AV Nodal Vagal Stimulation For Reduction of the Ventricular Rate During Atrial Fibrillation

NCT00850980
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Not listed
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 9, 2017 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Phase 3 Interventional Results available

Vein of Marshall Ethanol Infusion for Persistent Atrial Fibrillation

NCT01898221
View directory record Official record
Conditions
Ventricular Tachycardia, Atrial Fibrillation
Interventions
Ethanol, Ablation
Drug · Procedure
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years to 85 Years
Enrollment
343 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
12
States / cities
Phoenix, Arizona • Los Angeles, California • San Diego, California + 7 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

AI-guided Prediction and Treatment of Cardiac Arrest

NCT07452016
View directory record Official record
Conditions
Sudden Cardiac Arrest
Interventions
Machine learning-guided cardiac arrest prediction device
Device
Lead sponsor
MetroHealth Medical Center
Other
Eligibility
18 Years and older
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Jul 21, 2026, 11:19 AM EDT
Terminated No phase listed Observational

Activation Timing and Atrial Fibrillation

NCT02063191
View directory record Official record
Conditions
Arrhythmias, Cardiac, Atrial Fibrillation, Bundle Branch Block
Interventions
Not listed
Lead sponsor
Essentia Health
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Duluth, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 3, 2014 · Synced Jul 21, 2026, 11:19 AM EDT
Completed No phase listed Observational

DF4 Connector System Post-Approval Study

NCT01638897
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Sudden Cardiac Death, Heart Failure
Interventions
Not listed
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
1,778 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
72
States / cities
Birmingham, Alabama • Anchorage, Alaska • Gilbert, Arizona + 69 more
Source: ClinicalTrials.gov public record
Updated Mar 19, 2019 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Phase 4 Interventional Results available

The Use of Dual Chamber ICD With Special Programmed Features to Lower the Risk of Inappropriate Shock

NCT00787800
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Atrial Fibrillation, Supraventricular Tachycardia
Interventions
Dual Chamber ICD, Single Chamber ICD
Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
2
States / cities
Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 23, 2014 · Synced Jul 21, 2026, 11:19 AM EDT
Not listed No phase listed Observational

Gut Microbiome and Ventricular Arrhythmias

NCT04466072
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Gut Microbiome
Interventions
Stool test for microbial analysis
Diagnostic Test
Lead sponsor
North Florida Foundation for Research and Education
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Apr 17, 2022 · Synced Jul 21, 2026, 11:19 AM EDT
Terminated Not applicable Interventional Results available

Pediatric Lead Extractability and Survival Evaluation (PLEASE)

NCT00335036
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Cardiomyopathy, Long QT Syndrome, Congenital Heart Disease
Interventions
ICD lead implant, Thin leads
Device
Lead sponsor
Charles Berul
Other
Eligibility
1 Year to 55 Years
Enrollment
748 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Jul 21, 2026, 11:19 AM EDT