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ClinicalTrials.gov public records Last synced Oct 21, 2026, 11:18 AM EDT

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Showing 97–120 of 255 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Defibrillators Clear all
Completed No phase listed Observational

Utility of the Audible Alert in Current Generation Medtronic Implantable Cardioverter-defibrillators

NCT01605500
View directory record Official record
Conditions
Patients With a Generation 2 Medtronic Implantable Cardioverter-defibrillator(ICD)
Interventions
Not listed
Lead sponsor
Englewood Hospital and Medical Center
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Englewood, New Jersey
Source: ClinicalTrials.gov public record
Updated Feb 19, 2016 · Synced Oct 21, 2026, 11:18 AM EDT
Completed No phase listed Observational Results available

Clinically Indicated Magnetic Resonance Imaging in Patients With Cardiac Devices

NCT01130896
View directory record Official record
Conditions
Arrhythmias, Cardiac
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
9 Years and older
Enrollment
1,509 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 13, 2021 · Synced Oct 21, 2026, 11:18 AM EDT
Completed Not applicable Interventional Results available

REsynchronization reVErses Remodeling in Systolic Left vEntricular Dysfunction (REVERSE)

NCT00271154
View directory record Official record
Conditions
Heart Failure
Interventions
Cardiac Resynchronization Therapy (CRT) Device or Implantable Cardioverter Defibrillator (ICD) with CRT
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
684 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2011
U.S. locations
34
States / cities
Huntsville, Alabama • Anchorage, Alaska • Redwood City, California + 31 more
Source: ClinicalTrials.gov public record
Updated Jan 30, 2012 · Synced Oct 21, 2026, 11:18 AM 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 22, 2018 · Synced Oct 21, 2026, 11:18 AM EDT
Completed Not applicable Interventional

Correlating QLV Interval to Left Ventricular (LV) Lead Position in Patients Receiving Cardiac Resynchronization Therapy.

NCT02166762
View directory record Official record
Conditions
Heart Failure, Cardiomyopathy, Cardiac Arrhythmia
Interventions
QLV interval measurement
Procedure
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 7, 2019 · Synced Oct 21, 2026, 11:18 AM EDT
Completed No phase listed Observational

LifeVest Wearable Cardioverter Defibrillator WEARIT-III Registry

NCT02700880
View directory record Official record
Conditions
Ischemic Heart Failure
Interventions
LifeVest
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Mar 28, 2019 · Synced Oct 21, 2026, 11:18 AM EDT
Completed No phase listed Observational

Necklace-Shaped Sensor for Non-Invasive Remote Monitoring of Vitals

NCT02337790
View directory record Official record
Conditions
Heart Failure, Hypertension
Interventions
Not listed
Lead sponsor
Baxter Healthcare Corporation
Industry
Eligibility
18 Years to 90 Years
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Imperial, California
Source: ClinicalTrials.gov public record
Updated Dec 30, 2015 · Synced Oct 21, 2026, 11:18 AM EDT
Completed No phase listed Observational

Safety of Sports for Patients With Implantable Cardioverter-Defibrillators

NCT00637754
View directory record Official record
Conditions
Heart Arrhythmias
Interventions
Not listed
Lead sponsor
Yale University
Other
Eligibility
10 Years to 60 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
31
States / cities
Phoenix, Arizona • Tucson, Arizona • Little Rock, Arkansas + 23 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2015 · Synced Oct 21, 2026, 11:18 AM EDT
Terminated Phase 4 Interventional Results available

Early Ablation Therapy for the Treatment of Ischemic Ventricular Tachycardia in Patients With Implantable Cardioverter Defibrillators

NCT01557842
View directory record Official record
Conditions
Ventricular Tachycardia, Ischemic
Interventions
Drug Treatment, Catheter Ablation
Drug · Device
Lead sponsor
Biosense Webster, Inc.
Industry
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
23
States / cities
Los Angeles, California • San Francisco, California • Aurora, Colorado + 14 more
Source: ClinicalTrials.gov public record
Updated Jun 8, 2017 · Synced Oct 21, 2026, 11:18 AM EDT
Active, not recruiting No phase listed Observational

PRE-DETERMINE Cohort Study

NCT01114269
View directory record Official record
Conditions
Coronary Artery Disease, Left Ventricular Dysfunction, Sudden Cardiac Death
Interventions
Not listed
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
5,764 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2026
U.S. locations
86
States / cities
Anchorage, Alaska • Glendale, Arizona • Phoenix, Arizona + 76 more
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Oct 21, 2026, 11:18 AM EDT
Not listed Not applicable Interventional

Right Ventricular Defibrillation Lead Select Site Study

NCT00385749
View directory record Official record
Conditions
Heart Failure, Congestive, Tachycardia, Ventricular
Interventions
RV apical vs RV septal defibrillation threshold testing
Device
Lead sponsor
Associates in Cardiology, PA
Other
Eligibility
21 Years and older
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 1, 2007 · Synced Oct 21, 2026, 11:18 AM EDT
Withdrawn Not applicable Interventional

Clonidine to Prevent Implantable Cardiovertor Defibrillator Firing

NCT00585871
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
clonidine, metoprolol
Drug
Lead sponsor
James Martins
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 24, 2018 · Synced Oct 21, 2026, 11:18 AM EDT
Completed Not applicable Interventional Results available

MADIT-CRT: Multicenter Automatic Defibrillator Implantation With Cardiac Resynchronization Therapy

NCT00180271
View directory record Official record
Conditions
Tachycardia, Congestive Heart Failure
Interventions
Cardiac resynchronization therapy with defibrillation, Implantable Cardioverter Defibrillator (ICD)
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
21 Years and older
Enrollment
1,820 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 19, 2018 · Synced Oct 21, 2026, 11:18 AM 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 28, 2021 · Synced Oct 21, 2026, 11:18 AM EDT
Completed No phase listed Observational Results available

Registry of Patients for MRI With Non-MRI Conditional Pacemakers and ICD Non-MRI Conditional Pacemakers and ICD

NCT02318550
View directory record Official record
Conditions
MRI Scans, Magnetic Resonance Imaging, Pacemaker, Implantable Cardioverter Defibrillator
Interventions
MRI Scan
Other
Lead sponsor
Lancaster General Hospital
Other
Eligibility
18 Years and older
Enrollment
262 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Lancaster, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 31, 2021 · Synced Oct 21, 2026, 11:18 AM EDT
Recruiting Not applicable Interventional

Paced Heart Rate Acceleration for Cardiac Conditioning

NCT06332391
View directory record Official record
Conditions
Heart Failure, Systolic
Interventions
Exercise-similar cardiac pacing, Sham cardiac pacing
Device
Lead sponsor
Denice Hodgson-Zingman, MD
Other
Eligibility
18 Years to 120 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Oct 21, 2026, 11:18 AM EDT
Completed Phase 4 Interventional

Apixaban for the Reduction of Thrombo-Embolism in Patients With Device-Detected Sub-Clinical Atrial Fibrillation

NCT01938248
View directory record Official record
Conditions
Atrial Fibrillation, Stroke
Interventions
Apixaban, aspirin
Drug
Lead sponsor
Population Health Research Institute
Other
Eligibility
55 Years and older
Enrollment
4,012 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
23
States / cities
Mesa, Arizona • Little Rock, Arkansas • Larkspur, California + 20 more
Source: ClinicalTrials.gov public record
Updated Nov 15, 2023 · Synced Oct 21, 2026, 11:18 AM EDT
Completed No phase listed Observational

Air Pollution and Implantable Cardioverter Defibrillators

NCT00015574
View directory record Official record
Conditions
Arrythmias
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
0 Years to 90 Years
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2004
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 4, 2006 · Synced Oct 21, 2026, 11:18 AM EDT
Completed Phase 2 Interventional

Dose Ranging Study of Celivarone With Amiodarone as Calibrator for the Prevention of Implantable Cardioverter Defibrillator (ICD) Interventions or Death

NCT00993382
View directory record Official record
Conditions
Arrhythmia Prophylaxis, Ventricular Arrhythmia
Interventions
Celivarone, Amiodarone, Matching placebo
Drug
Lead sponsor
Sanofi
Industry
Eligibility
21 Years and older
Enrollment
486 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
37
States / cities
Huntsville, Alabama • Mobile, Alabama • Mesa, Arizona + 33 more
Source: ClinicalTrials.gov public record
Updated May 30, 2016 · Synced Oct 21, 2026, 11:18 AM EDT
Completed Not applicable Interventional Results available

Safety and Efficacy of Automatic Testing Feature in New ICDs and CRT-Ds

NCT00746356
View directory record Official record
Conditions
Heart Failure, Ventricular Arrythmias
Interventions
Testing of the autocapture features of the device
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
5
States / cities
Little Rock, Arkansas • Browns Mills, New Jersey • Nashville, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 19, 2019 · Synced Oct 21, 2026, 11:18 AM EDT
Completed No phase listed Observational Results available

Educational Videos to Improve Patient Decision Making and Race Disparities in Implantable Cardioverter Defibrillator Use

NCT00918125
View directory record Official record
Conditions
Sudden Cardiac Arrest
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
19 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
2
States / cities
Burlington, North Carolina • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 19, 2015 · Synced Oct 21, 2026, 11:18 AM EDT
Completed Phase 3 Interventional Results available

Implantable Cardioverter-Defibrillator Use in the VA System

NCT01217827
View directory record Official record
Conditions
Cardiomyopathies
Interventions
Clinical Reminder
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
89 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
2
States / cities
Palo Alto, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated May 19, 2021 · Synced Oct 21, 2026, 11:18 AM EDT
Completed Not applicable Interventional

A Randomized Trial of Remote Monitoring of Implantable Cardioverter Defibrillators Versus Quarterly Device Interrogations in Clinic

NCT00606567
View directory record Official record
Conditions
Tachycardia, Ventricular, Ventricular Fibrillation
Interventions
Methods for monitoring patients with ICD's
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
151 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 14, 2014 · Synced Oct 21, 2026, 11:18 AM 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 29, 2020 · Synced Oct 21, 2026, 11:18 AM EDT