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ClinicalTrials.gov public records Last synced Sep 11, 2026, 4:47 PM EDT

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Showing 1–24 of 315 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Defibrillator Clear all
Completed Not applicable Interventional Results available

Safety of Body Composition Analysis in Heart Failure Patients With Implantable Cardioverter Defibrillators (ICDs)

NCT01568606
View directory record Official record
Conditions
Heart Failure, Obesity
Interventions
Body Composition Analysis InBody Scale
Device
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 9, 2020 · Synced Sep 11, 2026, 4:47 PM EDT
Completed No phase listed Observational

Conduction System Pacing International Registry (CONSPIRE)

NCT04831125
View directory record Official record
Conditions
Bradyarrhythmia, Heart Failure
Interventions
Data collection
Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
383 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
5
States / cities
Tucson, Arizona • Chicago, Illinois • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2026 · Synced Sep 11, 2026, 4:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

GAMification to Encourage End-Of-Life Discussions Between ICD Patients and Caregivers

NCT04994782
View directory record Official record
Conditions
Implantable Defibrillator User, Terminal Illness
Interventions
GAME-EOL
Behavioral
Lead sponsor
Debra Moser
Other
Eligibility
18 Years to 99 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 21, 2023 · Synced Sep 11, 2026, 4:47 PM EDT
Completed No phase listed Observational Results available

Extracellular Matrix Marker of Arrhythmia Risk (EMMA)

NCT00376532
View directory record Official record
Conditions
Myocardiopathies, Ischemia, Myocardial, Arrythmia, Death, Sudden, Cardiac
Interventions
Not listed
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 3, 2014 · Synced Sep 11, 2026, 4:47 PM 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 11, 2026, 4:47 PM EDT
Completed Not applicable Interventional

Syngery-Evaluating the Impact of Decision Aid

NCT03832868
View directory record Official record
Conditions
Implantable Cardioverter-defibrillators (ICDs)
Interventions
Pre-visit timing of receipt of the ICDs implantation decision aid, Post-visit timing of receipt of the ICDs implantation decision aid
Behavioral
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
3
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 11, 2019 · Synced Sep 11, 2026, 4:47 PM EDT
Not yet recruiting Not applicable Interventional

Early Feasibility Study of 3930M Defibrillation Lead Implantation Via the Middle Cardiac Vein in Patients With Tricuspid Valve Regurgitation

NCT07811609
View directory record Official record
Conditions
Defibrillator, Tricuspid Valve Regurgitation
Interventions
Defibrillator
Device
Lead sponsor
Minneapolis Heart Institute Foundation
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Sep 11, 2026, 4:47 PM EDT
Completed No phase listed Observational Results available

Multicenter Automatic Defibrillator Implantation Trial With Cardiac Resynchronization Therapy Post Approval Registry

NCT01294449
View directory record Official record
Conditions
Heart Failure
Interventions
MADIT-CRT ICD, MADIT-CRT CRT-D
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
21 Years and older
Enrollment
394 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 3, 2014 · Synced Sep 11, 2026, 4:47 PM EDT
Completed No phase listed Observational

F18-MHF: Implants-Associated Infection Detection

NCT05889286
View directory record Official record
Conditions
Knee Disease, Knee Infection
Interventions
[F-18]MHF
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Sep 11, 2026, 4:47 PM EDT
Completed Not applicable Interventional

Clinical Investigation of the Medtronic EnTrust™ Implantable Cardioverter Defibrillator (ICD), Model D153ATG

NCT00273195
View directory record Official record
Conditions
Ventricular Arrhythmias
Interventions
Implantable Cardioverter Defibrillator
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
24
States / cities
Little Rock, Arkansas • Glendale, California • Inglewood, California + 21 more
Source: ClinicalTrials.gov public record
Updated Oct 12, 2006 · Synced Sep 11, 2026, 4:47 PM EDT
Completed Phase 2 Interventional Results available

Pilot Randomized Trial With Flecainide in ARVC Patients

NCT03685149
View directory record Official record
Conditions
Arrhythmogenic Right Ventricular Cardiomyopathy
Interventions
Flecainide Pill, Placebo
Drug
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
6
States / cities
Denver, Colorado • Baltimore, Maryland • New York, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2024 · Synced Sep 11, 2026, 4:47 PM EDT
Completed No phase listed Observational Results available

Tachy Prediction Download Study

NCT03402126
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
TPD RAMWare
Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
15
States / cities
Los Angeles, California • Des Moines, Iowa • Royal Oak, Michigan + 12 more
Source: ClinicalTrials.gov public record
Updated Nov 15, 2021 · Synced Sep 11, 2026, 4:47 PM EDT
Not listed Phase 1 Interventional

MYOHEART™ (Myogenesis Heart Efficiency and Regeneration Trial)

NCT00054678
View directory record Official record
Conditions
Congestive Heart Failure, Coronary Artery Disease, Myocardial Infarction
Interventions
MyoCell™, MyoCath™
Drug · Device
Lead sponsor
Bioheart, Inc.
Industry
Eligibility
30 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
5
States / cities
Sunrise, Florida • Atlanta, Georgia • Minneapolis, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2007 · Synced Sep 11, 2026, 4:47 PM EDT
Completed Not applicable Interventional Results available

Multicenter Automatic Defibrillator Implantation Trial - Chemotherapy-Induced Cardiomyopathy

NCT02164721
View directory record Official record
Conditions
Cardiomyopathy
Interventions
Three-lead CRT-D (Defibrillator)
Device
Lead sponsor
University of Rochester
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
9
States / cities
Los Angeles, California • Washington D.C., District of Columbia • Tampa, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Mar 3, 2020 · Synced Sep 11, 2026, 4:47 PM EDT
Not listed Phase 3 Interventional

Cardiac Sympathetic Denervation for Prevention of Ventricular Tachyarrhythmias

NCT01013714
View directory record Official record
Conditions
Sudden Cardiac Death, Ventricular Tachycardia, Ventricular Fibrillation, Cardiomyopathy
Interventions
Cardiac Sympathetic Denervation (CSD), Routine Care
Procedure · Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
3
States / cities
Los Angeles, California • Portland, Oregon • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 18, 2024 · Synced Sep 11, 2026, 4:47 PM EDT
Terminated Not applicable Interventional Results available

ST Monitoring to Detect Acute Coronary Syndrome Events in Implantable Cardioverter Defibrillator Patients

NCT01424722
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Fortify® ST, Fortify Assura® ST, Ellipse® ST family of devices
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
2,258 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
97
States / cities
Birmingham, Alabama • Huntsville, Alabama • Mesa, Arizona + 85 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2021 · Synced Sep 11, 2026, 4:47 PM EDT
Completed No phase listed Observational

Genetic Substudy of the Alternans Before Cardioverter Defibrillator (ABCD) Trial

NCT00583297
View directory record Official record
Conditions
Ventricular Tachycardia, Cardiovascular Diseases, Arrythmia, CVD
Interventions
Not listed
Lead sponsor
CardioDx
Industry
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 21, 2018 · Synced Sep 11, 2026, 4:47 PM EDT
Terminated Not applicable Interventional Results available

DEfibrillators To REduce Risk by MagnetIc ResoNance Imaging Evaluation

NCT00487279
View directory record Official record
Conditions
Coronary Artery Disease, Left Ventricular Dysfunction, Sudden Cardiac Death
Interventions
Defibrillator, Control
Device · Other
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
56
States / cities
Anchorage, Alaska • Tucson, Arizona • Glendale, California + 42 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Sep 11, 2026, 4:47 PM EDT
Completed Phase 2 Interventional

At-Home Automated External Defibrillator (AED) Training Study

NCT00219674
View directory record Official record
Conditions
Myocardial Infarction, Heart Arrest, Chest Pain, Congestive Heart Failure, Angina, Unstable
Interventions
Group I: Video training, Group II: Video training + enhanced self-efficacy (SE), Group III: In-person training + enhanced SE, Group IV: In-person training + enhanced SE + support
Behavioral
Lead sponsor
Public Health - Seattle and King County
Government
Eligibility
18 Years and older
Enrollment
305 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2011
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 28, 2014 · Synced Sep 11, 2026, 4:47 PM EDT
Completed Phase 1 Interventional

Nurses Helping Sudden Cardiac Arrest Survivors Recover After Getting An Implantable Cardioverter Defibrillator (ICD)

NCT00226681
View directory record Official record
Conditions
Sudden Cardiac Arrest
Interventions
Nursing Telephone Support Protocol, Usual Care
Behavioral
Lead sponsor
National Institute of Nursing Research (NINR)
NIH
Eligibility
12 Years to 90 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2004
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 9, 2008 · Synced Sep 11, 2026, 4:47 PM EDT
Completed Not applicable Interventional Results available

PREFER (Pacemaker Remote Follow-Up Evaluation and Review)

NCT00294645
View directory record Official record
Conditions
Bradycardia, Arrhythmia
Interventions
Transtelephonic monitoring (TTM), Medtronic CareLink® Network
Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
Not listed
Enrollment
980 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
45
States / cities
Scottsdale, Arizona • Little Rock, Arkansas • Washington D.C., District of Columbia + 42 more
Source: ClinicalTrials.gov public record
Updated Oct 18, 2010 · Synced Sep 11, 2026, 4:47 PM EDT
Completed No phase listed Observational

LONGEVITY Study. Evaluation of the Device and Battery Longevity of Boston Scientific Market-released ICD and CRT-D Devices

NCT02091011
View directory record Official record
Conditions
Implantable Cardioverter Defibrillators, CRT-D Cardiac Resynchronization Therapy Defibrillator
Interventions
Not listed
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
Not listed
Enrollment
1,600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
51
States / cities
Birmingham, Alabama • Glendale, Arizona • Tucson, Arizona + 44 more
Source: ClinicalTrials.gov public record
Updated Aug 1, 2022 · Synced Sep 11, 2026, 4:47 PM EDT
Not listed Not applicable Interventional

Sodium Channel Splicing in Heart Failure Trial (SOCS-HEFT) Prospective Study

NCT02738749
View directory record Official record
Conditions
Death, Sudden, Cardiac
Interventions
Implantable cardioverter-defibrillator (ICD)
Device
Lead sponsor
Rhode Island Hospital
Other
Eligibility
18 Years and older
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 11, 2017 · Synced Sep 11, 2026, 4:47 PM EDT
Completed Not applicable Interventional Results available

Multicenter Automatic Defibrillator Implantation Trial - Reduce Inappropriate Therapy

NCT00947310
View directory record Official record
Conditions
Primary Prevention of Sudden Cardiac Arrest
Interventions
Standard ICD programming, High rate cutoff, Long delay
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
21 Years and older
Enrollment
1,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 7, 2018 · Synced Sep 11, 2026, 4:47 PM EDT