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ClinicalTrials.gov public records Last synced Oct 20, 2026, 10:17 PM EDT

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Showing 1–24 of 253 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: ICD Clear all
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, 10:17 PM EDT
Terminated Not applicable Interventional Results available

Effect of Posture on Left Ventricular (LV) Transvenous Lead Capture Thresholds (EXPECT)

NCT01520714
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
Medtronic 4195 active fixation LV lead and Medtronic passive fixation LV lead
Device
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Plano, Texas
Source: ClinicalTrials.gov public record
Updated May 26, 2014 · Synced Oct 20, 2026, 10:17 PM EDT
Recruiting Not applicable Interventional

Remote Alert Pathway To Optimize CaRe of Cardiac Implantable Electrical Devices

NCT06937658
View directory record Official record
Conditions
Pacemaker DDD, Implantable Defibrillator User
Interventions
Alert-based care, Guideline-based care
Device
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Oct 20, 2026, 10:17 PM EDT
Withdrawn No phase listed Observational

Prevalence of Atrial Delay That Would Preclude Optimization of Atrioventricular (AV) Delay in Patients With Biventricular (BiV) Device

NCT00906100
View directory record Official record
Conditions
Heart Failure
Interventions
Not listed
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 7, 2019 · Synced Oct 20, 2026, 10:17 PM EDT
Not listed Not applicable Interventional

A PRospective, rAndomizEd Comparison of subcuTaneOous and tRansvenous ImplANtable Cardioverter Defibrillator Therapy

NCT01296022
View directory record Official record
Conditions
Ventricular Arrhythmias
Interventions
Implantation of subcutaneous ICD, Implantation of transvenous ICD
Device
Lead sponsor
Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Other
Eligibility
18 Years and older
Enrollment
850 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2023
U.S. locations
10
States / cities
New Haven, Connecticut • Atlanta, Georgia • Chicago, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated May 9, 2023 · Synced Oct 20, 2026, 10:17 PM EDT
Completed Not applicable Interventional

Positive Therapy for Autonomic Function & Mood in ICD Patients

NCT02088619
View directory record Official record
Conditions
Ventricular Arrhythmia, Implantable Cardioverter Defibrillator
Interventions
Quality of Life Therapy (QOLT), Heart Healthy Education (HHE)
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 2, 2017 · Synced Oct 20, 2026, 10:17 PM EDT
Not listed Not applicable Interventional

Insulation Failure in St. Jude Riata Leads

NCT02095977
View directory record Official record
Conditions
Implanted With Any Currently (and Any Future) FDA-approved Medtronic ICD or CRT Device, to Which is Attached a St. Jude Riata Lead
Interventions
fluoroscopy, synchronized high-voltage shock, Holter monitor
Procedure
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 8, 2017 · Synced Oct 20, 2026, 10:17 PM EDT
Completed No phase listed Observational

iPod and Other MP3 Players on ICDs and Pacemakers in Children

NCT00542854
View directory record Official record
Conditions
Heart Block, Bradycardia, Tachycardia, Arrhythmia
Interventions
MP3
Device
Lead sponsor
Boston Children's Hospital
Other
Eligibility
4 Years to 55 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 28, 2009 · Synced Oct 20, 2026, 10:17 PM 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 20, 2026, 10:17 PM 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, 10:17 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Adverse Events of MRI With Abandoned Leads

NCT04478773
View directory record Official record
Conditions
Pacemaker Electrode Lead Fracture, ICD
Interventions
MRI
Procedure
Lead sponsor
Lancaster General Hospital
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Lancaster, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 16, 2025 · Synced Oct 20, 2026, 10:17 PM EDT
Enrolling by invitation No phase listed Observational

IVTCC 2.0: A Prospective Multicenter Ventricular Tachycardia Catheter Ablation Registry

NCT04520347
View directory record Official record
Conditions
Ventricular Arrhythmia, Ventricular Tachycardia, Premature Ventricular Contraction (PVC), Cardiomyopathy
Interventions
Not listed
Lead sponsor
University of California, Los Angeles
Other
Eligibility
Not listed
Enrollment
10,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
34
States / cities
Phoenix, Arizona • Los Angeles, California • Sacramento, California + 25 more
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Oct 20, 2026, 10:17 PM EDT
Completed Phase 4 Interventional

The Use of Magnesium to Improve Blood Pressure, Cholesterol, and Glucose Control

NCT00282659
View directory record Official record
Conditions
Coronary Artery Disease, Hypertension, Dyslipidemia, Diabetes
Interventions
magnesium L-lactate
Drug
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years and older
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated May 21, 2019 · Synced Oct 20, 2026, 10:17 PM EDT
Not listed Phase 1Phase 2 Interventional

The REACT-ICD Trial

NCT02439424
View directory record Official record
Conditions
Atrial Tachyarrhythmia, Atrial Fibrillation
Interventions
Reactive ATP
Device
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 23, 2016 · Synced Oct 20, 2026, 10:17 PM EDT
Completed Phase 2 Interventional

Compassionate Use Study of 125 mg Per Day of Azimilide Dihydrochloride in One Patient

NCT00752596
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
Azimilide 2HCl
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
Male only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Feb 1, 2017 · Synced Oct 20, 2026, 10:17 PM 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 20, 2026, 10:17 PM 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 24, 2014 · Synced Oct 20, 2026, 10:17 PM EDT
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, 10:17 PM 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, 10:17 PM EDT
Completed No phase listed Observational

First Arrhythmia Collection of Transvenous and Simultaneous Subcutaneous Implantable Defibrillator Data

NCT01161589
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Atrial Fibrillation
Interventions
Not listed
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
142 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
3
States / cities
Chicago, Illinois • Charleston, South Carolina • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 16, 2017 · Synced Oct 20, 2026, 10:17 PM EDT
Completed Phase 2 Interventional

Exercise After an ICD

NCT00522340
View directory record Official record
Conditions
Defibrillators, Implantable, Heart Failure, Congestive
Interventions
Aerobic Exercise Program
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
21 Years and older
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Nov 10, 2014 · Synced Oct 20, 2026, 10:17 PM EDT
Completed Phase 1 Interventional

Effects of Triiodothyronine (T3) in Ischemic Heart Failure

NCT05384847
View directory record Official record
Conditions
Heart Failure
Interventions
Thyroid hormone T3, Control Group
Drug · Other
Lead sponsor
Emory University
Other
Eligibility
18 Years to 80 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Oct 20, 2026, 10:17 PM EDT
Withdrawn Phase 4 Interventional

Remote Interrogation in Rural Emergency Departments

NCT02421549
View directory record Official record
Conditions
Heart Disease, Cardiovascular Disease, Heart Failure, Arrhythmias, Cardiac
Interventions
Unpaired remote monitoring transmitter
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Oct 20, 2026, 10:17 PM EDT
Completed Not applicable Interventional

PREPARE - Primary Prevention Parameters Evaluation

NCT00279279
View directory record Official record
Conditions
Tachycardia, Ventricular, Implantable Cardioverter Defibrillator (ICD), Fibrillation, Ventricular, Syncope
Interventions
Implanted Device
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
31
States / cities
Birmingham, Alabama • Mesa, Arizona • Phoenix, Arizona + 28 more
Source: ClinicalTrials.gov public record
Updated Oct 26, 2006 · Synced Oct 20, 2026, 10:17 PM EDT