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ClinicalTrials.gov public records Last synced Oct 20, 2026, 5:24 AM EDT

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

Showing 121–144 of 255 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Defibrillator Clear all
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 20, 2026, 5:24 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 20, 2026, 5:24 AM EDT
Completed Phase 2 Interventional Results available

Evaluating Ventricular Arrhythmia in Subjects With Implantable Cardioverter Defibrillator or Cardiac Resynchronization Therapy-Defibrillator

NCT02104583
View directory record Official record
Conditions
Ventricular Arrhythmia
Interventions
Eleclazine, Placebo to match eleclazine
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 80 Years
Enrollment
313 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
37
States / cities
Mesa, Arizona • Long Beach, California • Los Angeles, California + 32 more
Source: ClinicalTrials.gov public record
Updated Apr 9, 2019 · Synced Oct 20, 2026, 5:24 AM EDT
Terminated No phase listed Observational Results available

ST Segment Detection Study

NCT00930969
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
ICD
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
175 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
17
States / cities
Anchorage, Alaska • Brandon, Florida • Orlando, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated Feb 18, 2019 · Synced Oct 20, 2026, 5:24 AM EDT
Completed Not applicable Interventional

Feasibility Study of Remote Support for Implantable Pulse Generator (IPG)/Implantable Cardioverter Defibrillator (ICD) Implant

NCT01809652
View directory record Official record
Conditions
Bradycardia, Sudden Cardiac Arrest
Interventions
Remote Implant Support Capability
Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 24, 2014 · Synced Oct 20, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Multicenter Trial of a Shared DECision Support Intervention for Patients Offered Implantable Cardioverter-DEfibrillators

NCT03374891
View directory record Official record
Conditions
Heart Failure, Systolic, Heart Failure
Interventions
Educational video and/or handout
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
790 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 8, 2022 · Synced Oct 20, 2026, 5:24 AM EDT
Completed No phase listed Observational

Parallel Mapping for Ventricular Tachycardia

NCT04477499
View directory record Official record
Conditions
Ventricular Tachycardia (V-Tach), Implantable Cardioverter Defibrillator (ICD), Arrythmia
Interventions
Not listed
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 10, 2023 · Synced Oct 20, 2026, 5:24 AM EDT
Completed No phase listed Observational

3T MRI CIED Post-Approval Study

NCT02969395
View directory record Official record
Conditions
Cardiac Rhythm Disorder
Interventions
Not listed
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
118
States / cities
Birmingham, Alabama • Anchorage, Alaska • Chandler, Arizona + 115 more
Source: ClinicalTrials.gov public record
Updated Aug 22, 2022 · Synced Oct 20, 2026, 5:24 AM 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 15, 2007 · Synced Oct 20, 2026, 5:24 AM EDT
Terminated Phase 4 Interventional Results available

Combined Use of BIOTRONIK Home Monitoring and Predefined Anticoagulation to Reduce Stroke Risk

NCT00559988
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Flutter, Stroke, Embolism, Systemic Arterial, Major Bleeding
Interventions
Home Monitoring Guided OAC, Physician-Directed OAC
Drug
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
2,718 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
73
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Anaheim, California + 70 more
Source: ClinicalTrials.gov public record
Updated Dec 5, 2017 · Synced Oct 20, 2026, 5:24 AM EDT
Completed No phase listed Observational

The Implantable Cardioverter-defibrillators (ICD)/Device Expectations, Adaptations, and Successes Study

NCT01040988
View directory record Official record
Conditions
Depression, Anxiety, Post-traumatic Stress Disorder
Interventions
Not listed
Lead sponsor
Boston Children's Hospital
Other
Eligibility
6 Years to 20 Years
Enrollment
166 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 13, 2017 · Synced Oct 20, 2026, 5:24 AM EDT
Terminated Not applicable Interventional Results available

Wearable Cardioverter Defibrillator in Hemodialysis Patients (WED-HED) Study

NCT02481206
View directory record Official record
Conditions
Sudden Cardiac Death, Sudden Cardiac Arrest
Interventions
Wearable Cardioverter Defibrillator
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
50 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
31
States / cities
Corona, California • Downey, California • Escondido, California + 28 more
Source: ClinicalTrials.gov public record
Updated Jan 19, 2021 · Synced Oct 20, 2026, 5:24 AM EDT
Withdrawn Not applicable Interventional

The Effect of Yoga on Cardiac Sympathetic Innervation Evaluated by I-123 mIBG

NCT03227393
View directory record Official record
Conditions
Heart Failure, Systolic
Interventions
Yoga training
Behavioral
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 20, 2018 · Synced Oct 20, 2026, 5:24 AM EDT
Terminated Not applicable Interventional

Comparative Effectiveness of Prophylactic ICD Versus Non-ICD Therapy

NCT06543446
View directory record Official record
Conditions
Heart Failure With Reduced Ejection Fraction
Interventions
ICD implantation
Procedure
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
3,290 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
13
States / cities
Portland, Maine • Baltimore, Maryland • Boston, Massachusetts + 10 more
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Oct 20, 2026, 5:24 AM EDT
Completed No phase listed Observational

Study of the Implantable Cardioverter Defibrillator (ICD) Intracardiac Electrograms

NCT00916435
View directory record Official record
Conditions
Congestive Heart Failure, Sudden Cardiac Death, Arrhythmia, Cardiomyopathies
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
630 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
2
States / cities
Baltimore, Maryland • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 21, 2015 · Synced Oct 20, 2026, 5:24 AM 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 13, 2006 · Synced Oct 20, 2026, 5:24 AM EDT
Completed No phase listed Observational

Precision Event Monitoring for Patients With Heart Failure Using HeartLogic

NCT03579641
View directory record Official record
Conditions
Heart Failure, Defibrillators, Implantable, Monitoring, Physiologic, Cardiac Resynchronization Therapy, Cardiovascular Disease, Heart Disease
Interventions
HeartLogic Sensors
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
2,184 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
56
States / cities
Birmingham, Alabama • Jonesboro, Arkansas • Little Rock, Arkansas + 48 more
Source: ClinicalTrials.gov public record
Updated Oct 25, 2022 · Synced Oct 20, 2026, 5:24 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 20, 2026, 5:24 AM EDT
Not yet recruiting Not applicable Interventional

Cardiac Anodal Biphasic Pacing

NCT07173777
View directory record Official record
Conditions
Cardiac Pacing
Interventions
Cardiac Waveform Generator
Device
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years and older
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 20, 2026, 5:24 AM EDT
Recruiting No phase listed Observational

HeartStart FRx Defibrillator Event Registry

NCT04250857
View directory record Official record
Conditions
Sudden Cardiac Arrest
Interventions
HeartStart FRX
Device
Lead sponsor
Heartstream US LLC
Industry
Eligibility
Not listed
Enrollment
1,400 participants
Timeline
2019 – 2030
U.S. locations
1
States / cities
Monroeville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Oct 20, 2026, 5:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Transvenous Lead Removal Post-Market Clinical Study

NCT03688412
View directory record Official record
Conditions
Cardiac Electrophysiology
Interventions
Cook lead extraction devices
Device
Lead sponsor
Cook Research Incorporated
Industry
Eligibility
18 Years and older
Enrollment
230 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
6
States / cities
San Francisco, California • Urbana, Illinois • Raleigh, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated May 28, 2020 · Synced Oct 20, 2026, 5:24 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 20, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Electronic Patient Notification of Remote ICD Data: Impact of Patient Engagement on Outcomes in the Merlin.Net™

NCT02989090
View directory record Official record
Conditions
Implantable Cardioverter-Defibrillator, Health Information Exchange, Electronic Health Records, Patient Participation
Interventions
Receive Detailed ICD Information-electronic, Receive Detailed ICD Information-paper
Other
Lead sponsor
Parkview Hospital, Indiana
Other
Eligibility
18 Years and older
Enrollment
191 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Fort Wayne, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 30, 2019 · Synced Oct 20, 2026, 5:24 AM EDT
Terminated Phase 1 Interventional

A Study to Learn How Safe Study Drug BAY2413555 is, How it Affects the Body, and How it Moves Into, Through, and Out of the Body Over 4 Weeks of Use in Participants With Heart Failure and Implanted Cardiac Defibrillator or Cardiac Resynchronization Devices (ICD/CRT)

NCT05532046
View directory record Official record
Conditions
Chronic Heart Failure
Interventions
BAY2413555 Dose 1, BAY2413555 Dose 2, Placebo to BAY2413555
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 79 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
3
States / cities
Atlanta, Georgia • Silver Spring, Maryland • Camp Hill, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 12, 2024 · Synced Oct 20, 2026, 5:24 AM EDT