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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: ICD Patients Clear all
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, 8:27 AM EDT
Completed Phase 4 Interventional Results available

TRUST: Lumos-T Safely RedUceS RouTine Office Device Follow-up

NCT00336284
View directory record Official record
Conditions
Patient Indicated for an ICD
Interventions
Home Monitoring, In-Office Conventional Follow-up
Other
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
108
States / cities
Birmingham, Alabama • Mesa, Arizona • Phoenix, Arizona + 87 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2010 · Synced Jul 24, 2026, 8:27 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, 8:27 AM EDT
Completed Phase 4 Interventional

Ablation vs Amiodarone for Treatment of AFib in Patients With CHF and an ICD

NCT00729911
View directory record Official record
Conditions
Heart Failure
Interventions
Atrial Fibrillation ablation, Amiodarone
Procedure · Drug
Lead sponsor
Texas Cardiac Arrhythmia Research Foundation
Other
Eligibility
18 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Apr 9, 2019 · Synced Jul 24, 2026, 8:27 AM EDT
Completed No phase listed Observational

Technology Dependency and Health-Related Quality of Life

NCT00022984
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
Not listed
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 24, 2026, 8:27 AM EDT
Terminated Not applicable Interventional Results available

Bispectral Index Monitoring During Testing in the Electrophysiology Lab

NCT00749671
View directory record Official record
Conditions
Tachycardia, Ventricular
Interventions
Bispectral index monitoring, Ramsey Sedation Scale
Device · Other
Lead sponsor
Baystate Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Springfield, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 18, 2016 · Synced Jul 24, 2026, 8:27 AM EDT
Terminated Not applicable Interventional

STandardized Ultra-conservative Or Physician-directed ICD Programming for Continuous Flow LVAD Support

NCT04264182
View directory record Official record
Conditions
Heart Failure, Systolic, Left Ventricular Assist Device, ICD
Interventions
ICD programming
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 7, 2022 · Synced Jul 24, 2026, 8:27 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 16, 2017 · Synced Jul 24, 2026, 8:27 AM EDT
Completed No phase listed Observational Results available

Extracellular Matrix Marker of Arrhythmia Risk (EMMA)

NCT00376532
View directory record Official record
Conditions
Myocardiopathies, Ischemia, Myocardial, Arrythmia, Death, Sudden, Cardiac
Interventions
Not listed
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 3, 2014 · Synced Jul 24, 2026, 8:27 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 Jun 15, 2026 · Synced Jul 24, 2026, 8:27 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 4, 2017 · Synced Jul 24, 2026, 8:27 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 24, 2022 · Synced Jul 24, 2026, 8:27 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 7, 2022 · Synced Jul 24, 2026, 8:27 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 13, 2015 · Synced Jul 24, 2026, 8:27 AM EDT
Completed Phase 4 Interventional Results available

TRIAGE-CRT Telemonitoring in Patients With CHF and Indication of CRT-D

NCT00395642
View directory record Official record
Conditions
Congestive Heart Failure, Cardiac Resynchronization Therapy
Interventions
Kronos LV-T, Lumax HF-T
Device
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
12
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Wilmington, Delaware + 9 more
Source: ClinicalTrials.gov public record
Updated Jan 19, 2010 · Synced Jul 24, 2026, 8:27 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 11, 2026 · Synced Jul 24, 2026, 8:27 AM EDT
Recruiting No phase listed Observational

Left Ventricular Structural Predictors of Sudden Cardiac Death

NCT01076660
View directory record Official record
Conditions
Ischemic Cardiomyopathy, Nonischemic Cardiomyopathy
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 80 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2030
U.S. locations
2
States / cities
Newark, Delaware • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 19, 2026 · Synced Jul 24, 2026, 8:27 AM EDT
Not listed Phase 4 Interventional

Study of Defibrillation Testing In Patients Undergoing Initial ICD Implantation

NCT01905007
View directory record Official record
Conditions
Ventricular Arrhythmias
Interventions
Defibrillation testing
Device
Lead sponsor
The Cooper Health System
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
2
States / cities
Camden, New Jersey • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 21, 2013 · Synced Jul 24, 2026, 8:27 AM EDT
Terminated Phase 4 Interventional Results available

Early Ablation Therapy for the Treatment of Ischemic Ventricular Tachycardia in Patients With Implantable Cardioverter Defibrillators

NCT01557842
View directory record Official record
Conditions
Ventricular Tachycardia, Ischemic
Interventions
Drug Treatment, Catheter Ablation
Drug · Device
Lead sponsor
Biosense Webster, Inc.
Industry
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
23
States / cities
Los Angeles, California • San Francisco, California • Aurora, Colorado + 14 more
Source: ClinicalTrials.gov public record
Updated Jun 7, 2017 · Synced Jul 24, 2026, 8:27 AM EDT
Not listed Not applicable Interventional

Study to Evaluate Tetanizing Burst Therapy in Patients Undergoing ICD Replacement

NCT03628911
View directory record Official record
Conditions
Cardiac Electrophysiology
Interventions
Tetanizing Burst Therapy
Device
Lead sponsor
EP Sciences
Industry
Eligibility
18 Years to 80 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 16, 2019 · Synced Jul 24, 2026, 8:27 AM EDT
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 27, 2021 · Synced Jul 24, 2026, 8:27 AM EDT
Completed No phase listed Observational

OptiSense™ Performance in Detecting Atrial Episodes

NCT00870324
View directory record Official record
Conditions
Tachyarrhythmias, Atrial Fibrillation
Interventions
OptiSense Lead, Tendril Lead
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
2
States / cities
Akron, Ohio • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Jul 24, 2026, 8:27 AM EDT
Completed No phase listed Observational

Safety of Magnetic Resonance Imaging in Patients With Pacemakers and Defibrillators

NCT02227004
View directory record Official record
Conditions
Conditions Requiring Diagnostic Evaluation
Interventions
Perform MRI in patients with pacemaker or ICD
Diagnostic Test
Lead sponsor
Johns Hopkins University
Other
Eligibility
9 Years to 100 Years
Enrollment
1,275 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 19, 2021 · Synced Jul 24, 2026, 8:27 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Vaccine Therapy in Treating Patients With Stage IV Breast Cancer

NCT00791037
View directory record Official record
Conditions
HER2-positive Breast Cancer, Male Breast Cancer, Recurrent Breast Cancer, Stage IV Breast Cancer
Interventions
HER-2/neu peptide vaccine, leukapheresis, ex vivo-expanded HER2-specific T cells, cyclophosphamide, sargramostim, laboratory biomarker analysis
Biological · Procedure · Drug + 1 more
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 24, 2017 · Synced Jul 24, 2026, 8:27 AM EDT