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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Implantable Cardioverter Defibrillator Implanted Clear all
Completed Not applicable Interventional Results available

SJM MRI Diagnostic Imaging Registry (IDE)

NCT02807948
View directory record Official record
Conditions
Cardiac Arrhythmia
Interventions
Pacemaker, ICD, or CRT device
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
189 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
58
States / cities
Scottsdale, Arizona • Tucson, Arizona • Jonesboro, Arkansas + 55 more
Source: ClinicalTrials.gov public record
Updated Aug 25, 2019 · Synced Jul 24, 2026, 10:08 AM EDT
Completed Phase 4 Interventional Results available

OptiVol® Care Pathway

NCT00847288
View directory record Official record
Conditions
Heart Failure
Interventions
Monthly Review Arm, Quarterly Review Arm
Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
1,682 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
108
States / cities
Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 105 more
Source: ClinicalTrials.gov public record
Updated May 2, 2013 · Synced Jul 24, 2026, 10:08 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 13, 2020 · Synced Jul 24, 2026, 10:08 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 21, 2018 · Synced Jul 24, 2026, 10:08 AM EDT
Completed No phase listed Observational

Surface ECG Signal Recording for the Implantable Subcutaneous String Defibrillator (ISSD) Detection Algorithm Performance Assessment

NCT03408951
View directory record Official record
Conditions
Tachyarrhythmia, Arrhythmias, Cardiac
Interventions
Recording
Other
Lead sponsor
NewPace Ltd
Industry
Eligibility
18 Years and older
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Roslyn, New York
Source: ClinicalTrials.gov public record
Updated Aug 20, 2019 · Synced Jul 24, 2026, 10:08 AM EDT
Recruiting No phase listed Observational

Product Performance Report: Evaluate Long-term Reliability & Performance of Medtronic Marketed Cardiac Therapy Products

NCT00271180
View directory record Official record
Conditions
Arrhythmia, Bradycardia, Heart Failure, Sinus Tachycardia
Interventions
Device
Device
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
20,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1983 – 2040
U.S. locations
113
States / cities
Birmingham, Alabama • Anchorage, Alaska • Chandler, Arizona + 110 more
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Jul 24, 2026, 10:08 AM EDT
Completed No phase listed Observational

Global Electrical Heterogeneity and Clinical Outcomes

NCT03210883
View directory record Official record
Conditions
Heart Failure, Implantable Defibrillator User, Ventricular Arrythmia
Interventions
Not listed
Lead sponsor
Larisa Tereshchenko
Other
Eligibility
18 Years to 89 Years
Enrollment
3,471 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
6
States / cities
Los Angeles, California • Stanford, California • Aurora, Colorado + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 7, 2021 · Synced Jul 24, 2026, 10:08 AM EDT
Completed No phase listed Observational

TRENDS: A Prospective Study of the Clinical Significance of Atrial Arrhythmias Detected by Implanted Device Diagnostics

NCT00279981
View directory record Official record
Conditions
Atrial Fibrillation, Stroke, Heart Failure
Interventions
Diagnostic
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
3,100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
92
States / cities
Mesa, Arizona • Tucson, Arizona • Fountain Valley, California + 89 more
Source: ClinicalTrials.gov public record
Updated Dec 10, 2008 · Synced Jul 24, 2026, 10:08 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 4, 2022 · Synced Jul 24, 2026, 10:08 AM EDT
Completed No phase listed Observational

Sensing Atrial High Rate Episodes With Implantable Cardioverter-Defibrillators Trial (The SENSE Trial)

NCT02186704
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
ICD with DX system
Device
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
8
States / cities
Birmingham, Alabama • Boston, Massachusetts • New York, New York + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2018 · Synced Jul 24, 2026, 10:08 AM EDT
Completed No phase listed Observational Results available

S-ICD® System Post Approval Study

NCT01736618
View directory record Official record
Conditions
Primary Prevention of Sudden Cardiac Arrest, Secondary Prevention of Sudden Cardiac Arrest
Interventions
S-ICD System
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
Not listed
Enrollment
1,766 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
87
States / cities
Huntsville, Alabama • Mesa, Arizona • Phoenix, Arizona + 72 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2024 · Synced Jul 24, 2026, 10:08 AM EDT
Not listed No phase listed Observational

Electrophysiologic and Morphologic Assessment of the Substrate to Guide Implantation of Defibrillators in Dilated Cardiomyopathy

NCT01378572
View directory record Official record
Conditions
Dilated Cardiomyopathy, Primary Prevention of Sudden Cardiac Death, Implantable Cardioverter Defibrillator
Interventions
Not listed
Lead sponsor
Catholic University of the Sacred Heart
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2009
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 21, 2011 · Synced Jul 24, 2026, 10:08 AM 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 12, 2016 · Synced Jul 24, 2026, 10:08 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 23, 2025 · Synced Jul 24, 2026, 10:08 AM 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 1, 2017 · Synced Jul 24, 2026, 10:08 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 Oct 31, 2007 · Synced Jul 24, 2026, 10:08 AM EDT
Terminated No phase listed Observational Results available

Optisure Lead Post Approval Study

NCT02235545
View directory record Official record
Conditions
Heart Failure, Tachycardia, Ventricular
Interventions
St. Jude Medical Optisure Lead
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,735 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
46
States / cities
Birmingham, Alabama • Phoenix, Arizona • Jonesboro, Arkansas + 42 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced Jul 24, 2026, 10:08 AM EDT
Completed No phase listed Observational

Comparison of a MAGNET Protocol Versus "off-on" Protocol for Patients With Implantable Cardioverter Defibrillators

NCT01599065
View directory record Official record
Conditions
Sudden Cardiac Death, Arrhythmia, Heart Failure
Interventions
Magnet or Off-On
Other
Lead sponsor
Midwest Heart Foundation
Other
Eligibility
19 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
3
States / cities
Downers Grove, Illinois • Elmhurst, Illinois • Naperville, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 20, 2013 · Synced Jul 24, 2026, 10:08 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 20, 2015 · Synced Jul 24, 2026, 10:08 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 6, 2025 · Synced Jul 24, 2026, 10:08 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 12, 2006 · Synced Jul 24, 2026, 10:08 AM 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 8, 2023 · Synced Jul 24, 2026, 10:08 AM EDT
Completed Not applicable Interventional

Truncal Blocks Versus Wound Infiltration for SICD

NCT04974762
View directory record Official record
Conditions
Intraoperative Pain, Postoperative Pain
Interventions
Wound infiltration, Truncal blocks
Procedure
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 3, 2022 · Synced Jul 24, 2026, 10:08 AM EDT
Not yet recruiting Not applicable Interventional

Remote Alert Pathway To Optimize CaRe of Cardiac Implantable Electrical Devices: The RAPTOR-CIED Study (Main Phase)

NCT07352657
View directory record Official record
Conditions
Pacemaker, Implantable Defibrillator
Interventions
Alert-based care, Guideline-based Care
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Jul 24, 2026, 10:08 AM EDT