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ClinicalTrials.gov public records Last synced Oct 20, 2026, 12:41 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 255 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Defibrillator Clear all
Terminated No phase listed Observational

Study of Paced QRS Duration as a Marker of Sudden Cardiac Death

NCT01948206
View directory record Official record
Conditions
Sudden Cardiac Death
Interventions
Not listed
Lead sponsor
Pocono Medical Center
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
East Stroudsburg, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 13, 2016 · Synced Oct 20, 2026, 12:41 AM EDT
Completed Not applicable Interventional Results available

Confirmatory Clinical Trial of the Evera MRI System for Conditionally-safe MRI Access

NCT02117414
View directory record Official record
Conditions
Implantable Defibrillator
Interventions
MRI scan sequences of the head and chest regions, Waiting Period Visit
Device · Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
275 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
25
States / cities
Salinas, California • Stanford, California • Hartford, Connecticut + 22 more
Source: ClinicalTrials.gov public record
Updated Nov 28, 2016 · Synced Oct 20, 2026, 12:41 AM EDT
Completed No phase listed Observational

Implantable Cardiac Defibrillators for the Prevention of Sudden Death in Patients With Cardiac Sarcoidosis

NCT01013311
View directory record Official record
Conditions
Sarcoidosis of the Heart, Cardiomyopathy
Interventions
Not listed
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 5, 2023 · Synced Oct 20, 2026, 12:41 AM EDT
Recruiting Not applicable Interventional

Safety and Performance Assessment of the Sphere-9™ Catheter and Affera™ Ablation System for the Treatment of Ventricular Tachycardia (Sphere-9 VT EFS)

NCT06703489
View directory record Official record
Conditions
Ventricular Tachycardia (VT)
Interventions
Sphere-9 Catheter with the Affera Mapping and Ablation System
Device
Lead sponsor
Medtronic Cardiac Ablation Solutions
Industry
Eligibility
18 Years to 85 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
6
States / cities
Boston, Massachusetts • New York, New York • Cleveland, Ohio + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Oct 20, 2026, 12:41 AM EDT
Recruiting No phase listed Observational

Prospective Observational Study of the ICD in Sudden Cardiac Death Prevention

NCT00733590
View directory record Official record
Conditions
Heart Failure, Congestive, Death, Sudden, Cardiac, Arrhythmia, Cardiomyopathies
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 85 Years
Enrollment
1,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2029
U.S. locations
4
States / cities
Washington D.C., District of Columbia • Baltimore, Maryland • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Oct 20, 2026, 12:41 AM EDT
Completed No phase listed Observational

Patient and Physician Survey Determinants of Appropriate ICD Utilization

NCT01514773
View directory record Official record
Conditions
Heart Failure, Systolic
Interventions
Not listed
Lead sponsor
Todd M Koelling, MD
Other
Eligibility
18 Years and older
Enrollment
452 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 17, 2017 · Synced Oct 20, 2026, 12:41 AM EDT
Completed No phase listed Observational

PROSPECT: Predictors of Response to Cardiac Re-Synchronization Therapy

NCT00253357
View directory record Official record
Conditions
Heart Failure, Congestive Heart Failure, Cardiomyopathy
Interventions
Not listed
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
16
States / cities
Several Locations, California • Gainsville, Florida • Atlanta, Georgia + 13 more
Source: ClinicalTrials.gov public record
Updated Dec 21, 2007 · Synced Oct 20, 2026, 12:41 AM EDT
Completed No phase listed Observational

Study to Monitor Patients With Pacemakers or ICDs Who Undergo MRI Scans

NCT01999751
View directory record Official record
Conditions
Arrhythmias, Cardiac
Interventions
MRI Scan
Device
Lead sponsor
Essentia Health
Other
Eligibility
18 Years and older
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
1
States / cities
Duluth, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 12, 2018 · Synced Oct 20, 2026, 12:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Heart Sounds Measurement Using the Wearable Cardioverter Defibrillator (HS-WCD) Study

NCT02825966
View directory record Official record
Conditions
Heart Failure
Interventions
AUDICOR then LifeVest then AUDICOR
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 2, 2020 · Synced Oct 20, 2026, 12:41 AM EDT
Withdrawn Phase 2 Interventional

Trial to Determine Imaging Parameters of LMI1195 in Heart Failure Patients at Low and High Risk of Defibrillator Firing

NCT01085175
View directory record Official record
Conditions
Heart Failure
Interventions
LMI 1195
Drug
Lead sponsor
Lantheus Medical Imaging
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 14, 2015 · Synced Oct 20, 2026, 12:41 AM EDT
Completed Not applicable Interventional

Feasibility Study of an Integrated Diagnostic System to Manage Heart Failure

NCT01045343
View directory record Official record
Conditions
Heart Failure
Interventions
Integrated diagnositic system, Routine in office visits
Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
136 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
13
States / cities
Anchorage, Alaska • Aurora, Colorado • Tampa, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Apr 17, 2012 · Synced Oct 20, 2026, 12:41 AM EDT
Completed No phase listed Observational Results available

SJ4 Post Approval Study in Implantable Cardioverter-Defibrillator and Cardiac Resynchronization Therapy Defibrillator Patients

NCT00940888
View directory record Official record
Conditions
Tachyarrhythmias, Sudden Cardiac Death, Heart Failure
Interventions
SJ4 connector and RV high voltage SJ4 lead
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,701 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Oct 20, 2026, 12:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

University Hospital Cardiac Device MR Registry: The Safety of MR Imaging in Patients With Implanted Cardiac Devices

NCT02548819
View directory record Official record
Conditions
MRI, Pacemaker, Defibrillator
Interventions
MRI
Other
Lead sponsor
University Health Care System, Augusta, Georgia
Other
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 1, 2017 · Synced Oct 20, 2026, 12:41 AM EDT
Completed Not applicable Interventional

InSync III Marquis Model 7279 Cardioverter Defibrillator Cardiac Resynchronization System

NCT00271232
View directory record Official record
Conditions
Heart Failure
Interventions
Cardiac resynchronization therapy
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
238 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
34
States / cities
Anchorage, Alaska • Phoenix, Arizona • Los Angeles, California + 31 more
Source: ClinicalTrials.gov public record
Updated Dec 21, 2007 · Synced Oct 20, 2026, 12:41 AM EDT
Completed No phase listed Observational

Reconstruction of 12-Lead Electrogram From Intracardiac Signals From Defibrillators During or After Implantation

NCT00890461
View directory record Official record
Conditions
ICD
Interventions
CT scan of the chest without contrast
Radiation
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2017
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 3, 2017 · Synced Oct 20, 2026, 12:41 AM EDT
Completed No phase listed Observational

Automated Cardioverter Defibrillator in Children

NCT00268021
View directory record Official record
Conditions
Congenital Disorders
Interventions
Not listed
Lead sponsor
Children's Healthcare of Atlanta
Other
Eligibility
Up to 21 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1998
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 2, 2014 · Synced Oct 20, 2026, 12:41 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 20, 2026, 12:41 AM EDT
Terminated No phase listed Observational Results available

Plexa ICD Lead Registry

NCT03103503
View directory record Official record
Conditions
Implantable Defibrillator User
Interventions
Not listed
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
901 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
28
States / cities
Fairhope, Alabama • Los Angeles, California • Rancho Mirage, California + 23 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2020 · Synced Oct 20, 2026, 12:41 AM EDT
Completed Not applicable Interventional

EnSite NavX-Guided Coronary Sinus Mapping During CRT Implant

NCT01615835
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
EnSite NavX System
Other
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years to 75 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
2
States / cities
Augusta, Georgia • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Oct 20, 2026, 12:41 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 9, 2020 · Synced Oct 20, 2026, 12:41 AM EDT
Terminated Not applicable Interventional

Automated MEdical Record Driven Implantable CArdioverter-defibrillator Heart Failure Trial (AMERICA-HF)

NCT01807130
View directory record Official record
Conditions
Heart Failure
Interventions
Automated HF/EP Referral, Placebo (Registry Arm)
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 10, 2014 · Synced Oct 20, 2026, 12:41 AM EDT
Completed Phase 2 Interventional

Double Blind Placebo Controlled Dose Ranging Study of the Efficacy and Safety of SSR149744c 100 or 300 mg for the Prevention of ventrICular ARrhythmia-triggered Icd interventiOnS

NCT00232297
View directory record Official record
Conditions
Arrhythmia, Tachycardia, Ventricular, Ventricular Fibrillation
Interventions
SSR149744C
Drug
Lead sponsor
Sanofi
Industry
Eligibility
21 Years and older
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated May 8, 2012 · Synced Oct 20, 2026, 12:41 AM EDT
Completed Not applicable Interventional Results available

ZIPS Study - Zip Incision aPproximation vs. Suture

NCT02213510
View directory record Official record
Conditions
Wound, Cardiac Arrhythmia
Interventions
Zip Surgical Skin Closure Device, Standard Suture Closure
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated May 30, 2016 · Synced Oct 20, 2026, 12:41 AM EDT
Not listed Phase 1 Interventional

Autologous Cultured Myoblasts (BioWhittaker) Transplanted Via Myocardial Injection

NCT00050765
View directory record Official record
Conditions
Congestive Heart Failure, Coronary Artery Disease, Myocardial Infarction
Interventions
MyoCell™ Autologous Myoblasts
Drug
Lead sponsor
Bioheart, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
5
States / cities
Fort Lauderdale, Florida • Atlanta, Georgia • Chicago, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 8, 2006 · Synced Oct 20, 2026, 12:41 AM EDT