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ClinicalTrials.gov public records Last synced Sep 29, 2026, 11:14 PM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Sudden Cardiac Arrest Clear all
Not listed No phase listed Observational

Prospective Study to Identify Patients at Risk of Dangerous Ventricular Arrhythmias

NCT00562757
View directory record Official record
Conditions
Sudden Cardiac Death
Interventions
Not listed
Lead sponsor
Harbinger Medical, Inc.
Industry
Eligibility
18 Years and older
Enrollment
320 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
4
States / cities
Phoenix, Arizona • Wichita, Kansas • Boston, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 22, 2007 · Synced Sep 29, 2026, 11:14 PM 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 21, 2013 · Synced Sep 29, 2026, 11:14 PM EDT
Completed No phase listed Observational Results available

Educational Videos to Improve Patient Decision Making and Race Disparities in Implantable Cardioverter Defibrillator Use

NCT00918125
View directory record Official record
Conditions
Sudden Cardiac Arrest
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
19 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
2
States / cities
Burlington, North Carolina • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 19, 2015 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Not applicable Interventional Results available

Ambulatory Post-Syncope Arrhythmia Protection Feasibility Study

NCT02188147
View directory record Official record
Conditions
Syncope
Interventions
Short Term Wearable Defibrillator
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
6
States / cities
Danbury, Connecticut • Jacksonville, Florida • Minneapolis, Minnesota + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 21, 2023 · Synced Sep 29, 2026, 11:14 PM 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 Sep 29, 2026, 11:14 PM EDT
Recruiting No phase listed Observational

HS Students Mandatory Universal Student Instruction in CPR Appraised Learning- Is the Mandate Working?

NCT04493970
View directory record Official record
Conditions
Sudden Cardiac Arrest
Interventions
High School Students Survey
Other
Lead sponsor
Kansas City Heart Rhythm Research Foundation
Other
Eligibility
12 Years to 25 Years
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 26, 2024 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Intrepid Clinical Engineering Study

NCT05636332
View directory record Official record
Conditions
Sudden Cardiac Arrest
Interventions
12 lead Electrocardiogram
Diagnostic Test
Lead sponsor
Heartstream US LLC
Industry
Eligibility
29 Days to 89 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Lehigh Acres, Florida
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Phase 4 Interventional Results available

POWER (Pulse Width Optimized Waveform Evaluation Trial)

NCT00311181
View directory record Official record
Conditions
Sudden Cardiac Death
Interventions
Implantable Cardioverter Defibrillator (ICD), Cardiac Resynchronization Therapy (CRT-D)
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
217 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
2
States / cities
Birmingham, Alabama • Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Feb 20, 2019 · Synced Sep 29, 2026, 11:14 PM EDT
Completed No phase listed Observational

Tempus Pro Monitor Registry

NCT05587764
View directory record Official record
Conditions
Sudden Cardiac Arrest, Emergency Care
Interventions
Standard of Care
Diagnostic Test
Lead sponsor
Heartstream US LLC
Industry
Eligibility
Not listed
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Sep 29, 2026, 11:14 PM EDT
Terminated Phase 2 Interventional Results available

Treatment of Ventricular Tachyarrhythmias Refractory To Shock With Beta Blockers: The SHOCK and BLOCK Trial

NCT00401882
View directory record Official record
Conditions
Cardiac Arrest, Sudden Cardiac Death, Ventricular Fibrillation, Tachycardia, Ventricular
Interventions
Epinephrine, Metoprolol
Drug
Lead sponsor
David Haines, MD
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated May 25, 2017 · Synced Sep 29, 2026, 11:14 PM EDT
Recruiting Not applicable Interventional

Developing a Digital Aid to Improve ICD Decisions

NCT07084142
View directory record Official record
Conditions
Heart Failure and Reduced Ejection Fraction
Interventions
Online, patient-facing decision-making aid (app) with personalized risk information., Implantable Cardioverter Defibrillator (ICD), Online, patient-facing decision-making app without personalized risk information.
Other · Device
Lead sponsor
Stanford University
Other
Eligibility
60 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
2
States / cities
San Francisco, California • Greenville, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Sep 29, 2026, 11:14 PM EDT
Terminated No phase listed Observational

LifeVest Post-CABG Registry

NCT01448005
View directory record Official record
Conditions
Sudden Cardiac Death, Ventricular Fibrillation, Ventricular Tachycardia, Ventricular Dysfunction, Myocardial Ischemia
Interventions
wearable defibrillator (LifeVest)
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
5
States / cities
Sacramento, California • Atlanta, Georgia • Takoma Park, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 6, 2017 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Not applicable Interventional Results available

The Jewel IDE Study

NCT05201495
View directory record Official record
Conditions
Sudden Cardiac Arrest
Interventions
Jewel Patch Wearable Cardioverter Defibrillator (P-WCD)
Device
Lead sponsor
Element Science, Inc.
Industry
Eligibility
18 Years and older
Enrollment
322 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
30
States / cities
Jonesboro, Arkansas • Little Rock, Arkansas • Hartford, Connecticut + 25 more
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Sep 29, 2026, 11:14 PM EDT
Not listed No phase listed Observational

SCD-HeFT 10 Year Follow-up

NCT01058837
View directory record Official record
Conditions
Left Ventricular Systolic Dysfunction, Congestive Heart Failure, Ischemic and Non-ischemic Cardiomyopathy, Sudden Cardiac Death Primary Prevention
Interventions
Not listed
Lead sponsor
Seattle Institute for Cardiac Research
Other
Eligibility
18 Years to 90 Years
Enrollment
1,855 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Bellevue, Washington
Source: ClinicalTrials.gov public record
Updated Feb 11, 2010 · Synced Sep 29, 2026, 11:14 PM EDT
Active, not recruiting No phase listed Observational

Genomics of Sudden Cardiac Arrest

NCT00661128
View directory record Official record
Conditions
Death, Sudden, Cardiac
Interventions
Not listed
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
14,862 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2030
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 5, 2023 · Synced Sep 29, 2026, 11:14 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 Sep 29, 2026, 11:14 PM EDT
Enrolling by invitation No phase listed Observational

Long-term Follow-up Study of Gene Therapy for Arrhythmogenic Cardiomyopathy Due to a Plakophilin-2 Pathogenic Variant

NCT07050160
View directory record Official record
Conditions
Arrhythmogenic Cardiomyopathy, PKP2-ACM, PKP2-ARVC
Interventions
Not listed
Lead sponsor
Lexeo Therapeutics
Industry
Eligibility
18 Years to 67 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 12, 2025 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Phase 3 Interventional Results available

Effect of High Dose Fish Oil Supplementation After Recent Heart Attack Using Magnetic Resonance Imaging

NCT00729430
View directory record Official record
Conditions
Myocardial Infarction, Death, Sudden, Cardiac
Interventions
Omega-3 Fatty Acids (Fish Oil Supplements), Placebo
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
21 Years and older
Enrollment
358 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 1, 2017 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Not applicable Interventional Results available

Vest Prevention of Early Sudden Death Trial and VEST Registry

NCT01446965
View directory record Official record
Conditions
Myocardial Infarction, Ventricular Dysfunction, Sudden Death, Ventricular Tachycardia, Ventricular Fibrillation
Interventions
wearable defibrillator
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
2,348 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2019
U.S. locations
57
States / cities
Anchorage, Alaska • Fresno, California • Salinas, California + 47 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2021 · Synced Sep 29, 2026, 11:14 PM EDT
Recruiting Phase 4 Interventional

Comparative Effectiveness of Carvedilol Versus Metoprolol Succinate in Heart Failure Patients With an Implantable Cardioverter Defibrillator

NCT06964464
View directory record Official record
Conditions
Heart Failure With Reduced Ejection Fraction (HFrEF), Sudden Cardiac Death, Ventricular Arrhythmia, Implantable Cardioverter Defibrillator (ICD), Beta-blocker Therapy, Cardiomyopathy
Interventions
Metoprolol Succinate, Carvedilol
Drug
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
13
States / cities
Scottsdale, Arizona • Rome, Georgia • Shawnee Mission, Kansas + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 18, 2025 · Synced Sep 29, 2026, 11:14 PM 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 Sep 29, 2026, 11:14 PM 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 Sep 29, 2026, 11:14 PM EDT
Completed No phase listed Observational

T Wave Alternans in Hemodialysis

NCT00296543
View directory record Official record
Conditions
End Stage Renal Disease, Coronary Heart Disease, Congestive Heart Failure
Interventions
Not listed
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 20, 2011 · Synced Sep 29, 2026, 11:14 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study of Early Hormone Replacement Therapy on Risk Factors for Sudden Cardiac Death

NCT00580775
View directory record Official record
Conditions
Menopausal Women
Interventions
Not listed
Lead sponsor
Yale University
Other
Eligibility
42 Years to 58 Years · Female only
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2010
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 22, 2015 · Synced Sep 29, 2026, 11:14 PM EDT