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Showing 1–24 of 101 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Cardioversion Clear all
Completed Not applicable Interventional

Acute Study to Collect Electrical Signals From the Heart Using a Special Lead

NCT02772380
View directory record Official record
Conditions
Tachycardia, Ventricular Arrhythmias
Interventions
Defibrillation following induction of VT/VF
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
14
States / cities
Scottsdale, Arizona • Hartford, Connecticut • Jacksonville, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 18, 2018 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Phase 2 Interventional

Double Blind Placebo COntrolled Dose Ranging studY of the eFficacy and safEty of SSR149744c 300 or 600 mg for the Conversion of Atrial Fibrillation / fluttEr

NCT00232310
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Flutter
Interventions
CELIVARONE (SSR149744C)
Drug
Lead sponsor
Sanofi
Industry
Eligibility
21 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated May 7, 2012 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Phase 3 Interventional

Ablation of Perimitral Flutter Following Catheter Ablation of Atrial Fibrillation: Impact on Outcomes

NCT01173796
View directory record Official record
Conditions
Atrial Fibrillation, Perimitral Flutter
Interventions
catheter ablation
Procedure
Lead sponsor
Texas Cardiac Arrhythmia Research Foundation
Other
Eligibility
18 Years to 75 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 10, 2012 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Phase 4 Interventional

Transthoracic Incremental Monophasic Versus Biphasic by Emergency Responders (TIMBER)

NCT00101881
View directory record Official record
Conditions
Cardiac Arrest
Interventions
Defibrillation (biphasic versus monophasic shock)
Device
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
168 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2005
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 1, 2008 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Not applicable Interventional

Time to Defibrillation Using Automated External Defibrillators by Pediatric Residents in Simulated Cardiac Arrests

NCT00640354
View directory record Official record
Conditions
Pediatric Residents
Interventions
Automated external defibrillator, Manual defibrillator
Device
Lead sponsor
Baylor College of Medicine
Other
Eligibility
Not listed
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 11, 2020 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Not applicable Interventional Results available

iPhone Helping Evaluate Atrial Fibrillation Rhythm Through Technology

NCT02731326
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Flutter
Interventions
AliveCor, Behavioral Altering Messaging
Device · Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
264 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 2, 2024 · Synced Sep 4, 2026, 4:33 AM EDT
Terminated Phase 4 Interventional

The Use of DIOVAN to Reduce Post-Cardioversion Recurrence of Atrial Fibrillation Trial (the DRAFT Trial)

NCT00343499
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
valsartan
Drug
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
3
States / cities
Ogden, Utah • Salt Lake City, Utah • St. George, Utah
Source: ClinicalTrials.gov public record
Updated Aug 20, 2008 · Synced Sep 4, 2026, 4:33 AM EDT
Completed No phase listed Observational

Myocardial Injury in Patients With Cardiac Implantable Electronic Devices Undergoing Defibrillation Threshold Testing

NCT04284800
View directory record Official record
Conditions
ICD
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Sep 4, 2026, 4:33 AM EDT
Terminated No phase listed Observational

Risk Factors That Contribute to the Maintenance of Sinus Rhythm

NCT04655443
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Standard Care
Other
Lead sponsor
Danbury Hospital
Other
Eligibility
18 Years and older
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
Danbury, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 13, 2021 · Synced Sep 4, 2026, 4:33 AM EDT
Completed No phase listed Observational

Surface ECG Signal Recording for the Implantable Subcutaneous String Defibrillator (ISSD) Detection Algorithm Performance Assessment

NCT03408951
View directory record Official record
Conditions
Tachyarrhythmia, Arrhythmias, Cardiac
Interventions
Recording
Other
Lead sponsor
NewPace Ltd
Industry
Eligibility
18 Years and older
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Roslyn, New York
Source: ClinicalTrials.gov public record
Updated Aug 20, 2019 · Synced Sep 4, 2026, 4:33 AM EDT
Terminated Phase 2 Interventional Results available

The Use of Ranolazine for Atrial Fibrillation and Diastolic Heart Failure

NCT01887353
View directory record Official record
Conditions
Atrial Fibrillation, Heart Failure
Interventions
Ranolazine, Placebo
Drug
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Murray, Utah
Source: ClinicalTrials.gov public record
Updated Jul 19, 2015 · Synced Sep 4, 2026, 4:33 AM EDT
Active, not recruiting Phase 2 Interventional

A Study of IV HBI-3000 for the Conversion Recent Onset Atrial Fibrillation (AF)

NCT04680026
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
HBI-3000, Placebo
Drug
Lead sponsor
HUYABIO International, LLC.
Industry
Eligibility
18 Years to 80 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
4
States / cities
Naples, Florida • Springfield, Illinois • Tupelo, Mississippi + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Phase 1 Interventional Results available

Automatic External Defibrillation Monitoring in Cardiac Arrest

NCT00382928
View directory record Official record
Conditions
Death, Sudden, Cardiac, Ventricular Fibrillation, Tachycardia, Ventricular
Interventions
Defibrillation of pulseless VT/VF by AECD
Device
Lead sponsor
Foundation for Atlanta Veterans Education and Research, Inc.
Other
Eligibility
18 Years and older
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 14, 2015 · Synced Sep 4, 2026, 4:33 AM EDT
Not listed Not applicable Interventional

Single vs. Dual-DCCV in Obese Patients

NCT04539158
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Direct Current Cardioversion
Device
Lead sponsor
Dr. Daniel P Morin, MD MPH FHRS
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
3
States / cities
Gretna, Louisiana • New Orleans, Louisiana • Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 29, 2023 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Not applicable Interventional Results available

The Effect of an Azygos Vein Coil on Defibrillation Threshold

NCT00798174
View directory record Official record
Conditions
Heart Failure
Interventions
Standard configuration vs. azygos coil
Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 27, 2018 · Synced Sep 4, 2026, 4:33 AM EDT
Completed No phase listed Observational

Myocardial Injury Following Elective Direct Current Cardioversion for Atrial Arrhythmias

NCT04151966
View directory record Official record
Conditions
Cardioversion
Interventions
Blood sample collection
Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 4, 2022 · Synced Sep 4, 2026, 4:33 AM EDT
Terminated Not applicable Interventional Results available

Combined Amiodarone and Electrical Cardioversion for Postoperative Atrial Fibrillation After Cardiac Surgery

NCT01558128
View directory record Official record
Conditions
Cardiac Disease
Interventions
Amiodarone, Cardioversion
Drug · Procedure
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 100 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 22, 2017 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Phase 4 Interventional Results available

'Effect of CRT on Defibrillation Threshold Estimates' Study

NCT00626093
View directory record Official record
Conditions
Sudden Cardiac Death
Interventions
Cardiac Resynchronization Therapy - Defibrillator (CRT-D)
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
2
States / cities
Santa Monica, California • Colorado Springs, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Not applicable Interventional Results available

Extravascular ICD Pivotal Study

NCT04060680
View directory record Official record
Conditions
Tachycardia, Ventricular Arrythmia
Interventions
Defibrillation using the Extravascular ICD
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
393 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
33
States / cities
Scottsdale, Arizona • La Jolla, California • Redwood City, California + 18 more
Source: ClinicalTrials.gov public record
Updated Nov 18, 2024 · Synced Sep 4, 2026, 4:33 AM EDT
Recruiting Not applicable Interventional

Safety and Effectiveness of Left Bundle Branch Area Pacing Versus Conventional Cardiac Resynchronization Therapy in Heart Failure

NCT07069738
View directory record Official record
Conditions
Heart Failure - NYHA II - IV
Interventions
CRT-D with a Quadripolar LV lead, CRT-D with INGEVITY+ pace/sense lead
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
850 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
38
States / cities
Huntsville, Alabama • Mobile, Alabama • Phoenix, Arizona + 33 more
Source: ClinicalTrials.gov public record
Updated Aug 3, 2026 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Not applicable Interventional Results available

Clinical Trial Comparing Devices Used for Cardioversion of Atrial Fibrillation

NCT05992623
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Zoll external defibrillator, Lifepak external defibrillator
Device
Lead sponsor
Inova Health Care Services
Other
Eligibility
18 Years and older
Enrollment
546 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Falls Church, Virginia
Source: ClinicalTrials.gov public record
Updated Sep 21, 2025 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Not applicable Interventional Results available

Evaluation of ACUITY™ X4 Quadripolar Coronary Venous Leads and RELIANCE™ 4-FRONT Defibrillation Leads

NCT02071173
View directory record Official record
Conditions
Cardiac Resynchronization Therapy
Interventions
ACUITY X4 quadripolar coronary venous lead and RELIANCE 4-FRONT defibrillation lead
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
2,244 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
96
States / cities
Birmingham, Alabama • Huntsville, Alabama • Anchorage, Alaska + 85 more
Source: ClinicalTrials.gov public record
Updated Jan 6, 2021 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Not applicable Interventional Results available

Evaluating Myocardial Injury for Defibrillation Threshold Testing Methods for ICD Implantation

NCT02111993
View directory record Official record
Conditions
Cardiomyopathy, Heart Failure, Cardiac Arrhythmia
Interventions
Standard Defibrillation Testing, Upper Limit of Vulnerability Testing
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated May 21, 2019 · Synced Sep 4, 2026, 4:33 AM EDT
Completed Phase 3 Interventional

Home Use of Automatic External Defibrillators to Treat Sudden Cardiac Arrest

NCT00047411
View directory record Official record
Conditions
Cardiovascular Diseases, Myocardial Infarction, Heart Diseases, Death, Sudden, Cardiac
Interventions
Cardiopulmonary Resuscitation, Automatic External Defibrillation
Other · Device
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
7,001 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2007
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 9, 2008 · Synced Sep 4, 2026, 4:33 AM EDT