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ClinicalTrials.gov public records Last synced Oct 20, 2026, 1:21 AM EDT

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Showing 49–72 of 255 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Defibrillator Clear all
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 20, 2026, 1:21 AM EDT
Terminated Not applicable Interventional Results available

Pediatric Lead Extractability and Survival Evaluation (PLEASE)

NCT00335036
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Cardiomyopathy, Long QT Syndrome, Congenital Heart Disease
Interventions
ICD lead implant, Thin leads
Device
Lead sponsor
Charles Berul
Other
Eligibility
1 Year to 55 Years
Enrollment
748 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Oct 20, 2026, 1:21 AM EDT
Completed No phase listed Observational

Myocardial Injury in Patients With Cardiac Implantable Electronic Devices Following Magnetic Resonance Imaging

NCT04151953
View directory record Official record
Conditions
Magnetic Resonance Imaging (MRI)
Interventions
Blood sample collection
Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
105 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 5, 2022 · Synced Oct 20, 2026, 1:21 AM 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, 1:21 AM EDT
Not listed No phase listed Observational

Does Lung Impedance Correlate With Changes in BNP in Stable and Acutely Decompensated Heart Failure Patients?

NCT00560339
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
Not listed
Lead sponsor
Southern New Jersey Cardiac Specialists
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
6
States / cities
Glendale, California • Voorhees Township, New Jersey • Roslyn, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 19, 2007 · Synced Oct 20, 2026, 1:21 AM EDT
Not listed No phase listed Observational

Observational Study on Inappropriate Therapies

NCT04118803
View directory record Official record
Conditions
Inappropriate Shocks From Implanted Defibrillator, ICD Replacement or Upgrade
Interventions
ICD replacement or upgrade
Device
Lead sponsor
MicroPort CRM
Industry
Eligibility
18 Years and older
Enrollment
881 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
5
States / cities
Fort Lauderdale, Florida • Chicago, Illinois • Maywood, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2023 · Synced Oct 20, 2026, 1:21 AM EDT
Completed No phase listed Observational

Programming Implantable Cardioverter Defibrillators in Patients With Primary Prevention Indication

NCT00743522
View directory record Official record
Conditions
Shock
Interventions
ICD/ CRT-D
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,670 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Oct 20, 2026, 1:21 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 10, 2008 · Synced Oct 20, 2026, 1:21 AM EDT
Terminated No phase listed Observational

Accuracy of Cardiac Acoustic Biomarkers Recorded by the Wearable Cardioverter Defibrillator

NCT04292405
View directory record Official record
Conditions
Heart Failure
Interventions
Wearable Cardioverter Defibrillator
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Timeline
2020 – 2025
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 30, 2025 · Synced Oct 20, 2026, 1:21 AM EDT
Terminated No phase listed Observational Results available

Protego DF4 Post Approval Registry

NCT02243696
View directory record Official record
Conditions
Implantable Defibrillator User
Interventions
Not listed
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,694 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
68
States / cities
Gadsden, Alabama • Avondale, Arizona • Glendale, Arizona + 65 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2020 · Synced Oct 20, 2026, 1:21 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 20, 2026, 1:21 AM EDT
Completed No phase listed Observational

Study of the Wearable Defibrillator in Heart-Failure Patients

NCT01326624
View directory record Official record
Conditions
Heart Failure, Ventricular Dysfunction, Sudden Death, Sudden Cardiac Arrest, Ventricular Tachycardia, Ventricular Fibrillation
Interventions
wearable defibrillator (LifeVest)
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 6, 2017 · Synced Oct 20, 2026, 1:21 AM 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, 1:21 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 20, 2026, 1:21 AM EDT
Recruiting Not applicable Interventional

Self-Management Interventions After an ICD Shock

NCT06037785
View directory record Official record
Conditions
Implantable Defibrillator User, Stress Reaction, Ptsd, Stress Management, Social Cognitive Theory
Interventions
Self-Paced Self-Management (SPSM)
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 24, 2025 · Synced Oct 20, 2026, 1:21 AM EDT
Completed Not applicable Interventional

Cardiac Resynchronization Therapy Defibrillator Based Impedance Monitoring Study

NCT00500838
View directory record Official record
Conditions
Heart Failure
Interventions
Transthoracic Impedance
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
4
States / cities
Little Rock, Arkansas • Glendale, California • Browns Mills, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2019 · Synced Oct 20, 2026, 1:21 AM EDT
Recruiting No phase listed Observational

HeartStart HS1 Defibrillator* Event Registry

NCT04840797
View directory record Official record
Conditions
Sudden Cardiac Arrest
Interventions
HeartStart HS1
Device
Lead sponsor
Heartstream US LLC
Industry
Eligibility
Not listed
Enrollment
1,400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2030
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Oct 20, 2026, 1:21 AM EDT
Terminated No phase listed Observational Results available

OMNI Study--Assessing Therapies in Medtronic Pacemaker, Defibrillator, and Cardiac Resynchronization Therapy Devices.

NCT00277524
View directory record Official record
Conditions
Tachycardia, Ventricular, Heart Failure, Congestive, Ventricular Fibrillation, Ventricular Dysfunction, Bradycardia
Interventions
Not listed
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
3,032 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
113
States / cities
Tucson, Arizona • Little Rock, Arkansas • Fresno, California + 107 more
Source: ClinicalTrials.gov public record
Updated Aug 28, 2013 · Synced Oct 20, 2026, 1:21 AM EDT
Completed No phase listed Observational

Diagnostic Investigation of Sudden Cardiac Event Risk

NCT00500708
View directory record Official record
Conditions
Arrhythmia, Cardiovascular Diseases, Heart Failure, CVD
Interventions
Not listed
Lead sponsor
CardioDx
Industry
Eligibility
18 Years to 90 Years
Enrollment
1,564 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
8
States / cities
Anchorage, Alaska • Palo Alto, California • Minneapolis, Minnesota + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 19, 2017 · Synced Oct 20, 2026, 1:21 AM EDT
Completed Not applicable Interventional Results available

Same Day Subcutaneous ICD And Send Home (DASH)

NCT03504839
View directory record Official record
Conditions
Cardiomyopathies, Cardiac Death, Sudden
Interventions
Subcutaneous ICD with same day discharge
Device
Lead sponsor
Emile Daoud, MD
Other
Eligibility
18 Years and older
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 23, 2021 · Synced Oct 20, 2026, 1:21 AM EDT
Completed Not applicable Interventional Results available

A Trial Assessing The Association Between Type Of Local Anesthesia Treatment And Postoperative Pain In Patients In Having Undergone Arrhythmia Surgery

NCT01300377
View directory record Official record
Conditions
Post-operative Pain
Interventions
Bupivacaine / Lidocaine, Lidocaine
Drug
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years and older
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2018
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Oct 20, 2026, 1:21 AM 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, 1:21 AM EDT
Completed Not applicable Interventional

Establishing a Standard for Peri-operative Implantable Cardioverter Defibrillator (ICD) Patient Education

NCT00845234
View directory record Official record
Conditions
Arrhythmia
Interventions
Intervention
Behavioral
Lead sponsor
East Carolina University
Other
Eligibility
18 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
3
States / cities
Aurora, Colorado • Lone Tree, Colorado • Greenville, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 26, 2013 · Synced Oct 20, 2026, 1:21 AM EDT
Enrolling by invitation Not applicable Interventional

Increasing Law Enforcement Application of Automated External Defibrillators (AED)s for Cardiac Arrest

NCT07649616
View directory record Official record
Conditions
Heart Arrest, Out-Of-Hospital, Defibrillators
Interventions
AED training adjunct
Behavioral
Lead sponsor
Wayne State University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 20, 2026, 1:21 AM EDT