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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Cardiac Death, Sudden Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Stearidonic Acid-Containing Foods on Eicosapentaenoic Acid Levels in Red Blood Cells and Omega-3 Index

NCT01749202
View directory record Official record
Conditions
Sudden Cardiac Death, Sudden Cardiac Arrest, Cardiovascular Disease
Interventions
Sunflower Oil Softgels, EPA softgels, Sunflower Oil Food, SDA soybean Oil Food
Dietary Supplement · Other
Lead sponsor
Solae, LLC
Industry
Eligibility
21 Years to 65 Years
Enrollment
126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Glen Ellyn, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 12, 2012 · Synced Jul 21, 2026, 1:45 PM EDT
Completed Not applicable Interventional Results available

Educational Videos to Address Racial Disparities in Implantable Cardioverter Defibrillator Therapy

NCT02819973
View directory record Official record
Conditions
Sudden Cardiac Death, Heart Failure
Interventions
Educational Video1, Educational Video 2, Usual Care 3
Other
Lead sponsor
Duke University
Other
Eligibility
21 Years and older
Enrollment
343 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
14
States / cities
San Francisco, California • Washington D.C., District of Columbia • Atlanta, Georgia + 11 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2021 · Synced Jul 21, 2026, 1:45 PM EDT
Completed No phase listed Observational

Identification of Risk Factors for Arrhythmia in Children and Adolescents With Hypertrophic Cardiomyopathy

NCT00753233
View directory record Official record
Conditions
Hypertrophic Cardiomyopathy (HCM)
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Up to 21 Years
Enrollment
145 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 21, 2026, 1:45 PM EDT
Completed Not applicable Interventional Results available

ASSURE WCD Clinical Evaluation - Detection and Safety Study

NCT03887052
View directory record Official record
Conditions
Cardiac Arrest, Sudden
Interventions
ASSURE™ Wearable Cardioverter Defibrillator (WCD)
Device
Lead sponsor
Kestra Medical Technologies, Inc.
Industry
Eligibility
18 Years and older
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
10
States / cities
Anchorage, Alaska • Hammond, Louisiana • Takoma Park, Maryland + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 11, 2024 · Synced Jul 21, 2026, 1:45 PM EDT
Recruiting No phase listed Observational

Imaging Techniques for Identifying Factors of Sudden Cardiac Death Risk

NCT00181233
View directory record Official record
Conditions
Sudden Cardiac Death
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Jul 21, 2026, 1:45 PM 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 21, 2026, 1:45 PM EDT
Completed No phase listed Observational

DF4 Connector System Post-Approval Study

NCT01638897
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Sudden Cardiac Death, Heart Failure
Interventions
Not listed
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
1,778 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
72
States / cities
Birmingham, Alabama • Anchorage, Alaska • Gilbert, Arizona + 69 more
Source: ClinicalTrials.gov public record
Updated Mar 19, 2019 · Synced Jul 21, 2026, 1:45 PM EDT
Recruiting Phase 1 Interventional

A Phase 1, Dose Escalation Trial of RP-A601 in Subjects With PKP2 Variant-Mediated Arrhythmogenic Cardiomyopathy (PKP2-ACM)

NCT05885412
View directory record Official record
Conditions
PKP2 Arrhythmogenic Cardiomyopathy (PKP2-ACM)
Interventions
RP-A601
Genetic
Lead sponsor
Rocket Pharmaceuticals Inc.
Industry
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
3
States / cities
La Jolla, California • Durham, North Carolina • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Jul 21, 2026, 1:45 PM EDT
Withdrawn No phase listed Observational

Analyzing Gene Regions That May Interact With the Effectiveness of High Blood Pressure Drugs

NCT00573092
View directory record Official record
Conditions
Myocardial Infarction, Cerebrovascular Accident, Death, Sudden, Cardiac
Interventions
Not listed
Lead sponsor
University of Washington
Other
Eligibility
30 Years to 79 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2016
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Nov 8, 2016 · Synced Jul 21, 2026, 1:45 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Comparison of 50% Tilt and Tuned Waveforms in Single-Coil Active Can Configuration

NCT00874445
View directory record Official record
Conditions
Sudden Cardiac Death
Interventions
ICD/ CRT-D
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
77 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Jul 21, 2026, 1:45 PM 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 18, 2026 · Synced Jul 21, 2026, 1:45 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Morphological Predictors of Sudden Cardiac Death in Patients With Known Cardiomyopathies

NCT00312624
View directory record Official record
Conditions
Cardiomyopathy
Interventions
contrast-enhanced cardiac MRI
Procedure
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 9, 2011 · Synced Jul 21, 2026, 1:45 PM EDT
Completed No phase listed Observational

Risk Stratification After Acute Myocardial Infarction With Cardiac MRI

NCT03725826
View directory record Official record
Conditions
Acute Myocardial Infarction (AMI)
Interventions
Not listed
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years and older
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Oct 30, 2018 · Synced Jul 21, 2026, 1:45 PM 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 21, 2026, 1:45 PM EDT
Completed Not applicable Interventional Results available

Optimization of VNS in Epileptic Patients to Induce Cardioprotection

NCT04387435
View directory record Official record
Conditions
Epilepsy, Sudden Cardiac Death
Interventions
A change or titration in the current or frequency settings of the VNS therapy system.
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 5, 2025 · Synced Jul 21, 2026, 1:45 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 19, 2021 · Synced Jul 21, 2026, 1:45 PM EDT
Recruiting No phase listed Observational

Fetal Electrophysiologic Abnormalities in High-Risk Pregnancies Associated With Fetal Demise

NCT03775954
View directory record Official record
Conditions
High Risk Pregnancy, Congenital Heart Disease, Fetal Hydrops, Twin Monochorionic Monoamniotic Placenta, Gastroschisis, Fetal Demise, Stillbirth, Fetal Arrhythmia, Long QT Syndrome, Intrauterine Fetal Death, Sudden Infant Death, Pregnancy Loss, Twin Twin Transfusion Syndrome, Birth Defect, Fetal Cardiac Anomaly, Fetal Cardiac Disorder, Fetal Death, Brugada Syndrome, Fetal Tachycardia
Interventions
Fetal Magnetocardiogram and Neonatal Electrocardiogram, Substudy only: Maternal/Infant Pharmacogenomic assessment postnatally
Diagnostic Test · Genetic
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2028
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Jul 21, 2026, 1:45 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 5, 2017 · Synced Jul 21, 2026, 1:45 PM EDT
Completed No phase listed Observational

Cardiac Rhythm Abnormalities in Patients With Refractory Epilepsy at High Risk for Sudden Death

NCT00203333
View directory record Official record
Conditions
Refractory Epilepsy, Arrhythmia, Sudden Death
Interventions
Medtronic REVEAL
Device
Lead sponsor
Thomas Jefferson University
Other
Eligibility
16 Years to 49 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2010
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 17, 2016 · Synced Jul 21, 2026, 1:45 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 26, 2026 · Synced Jul 21, 2026, 1:45 PM EDT
Completed No phase listed Observational

Prognostic Significance of T Wave Alternans

NCT00006501
View directory record Official record
Conditions
Heart Diseases, Ventricular Arrhythmia, Ventricular Fibrillation, Death, Sudden, Cardiac, Heart Arrest
Interventions
ECG
Procedure
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
549 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 22, 2015 · Synced Jul 21, 2026, 1:45 PM EDT
Completed Not applicable Interventional Results available

Pan-Asia United States PrEvention of Sudden Cardiac Death Catheter Ablation Trial

NCT02848781
View directory record Official record
Conditions
Ventricular Tachycardia (VT)
Interventions
Implantable Cardioverter Defibrillator (ICD), Catheter Ablation
Device · Procedure
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Dec 13, 2022 · Synced Jul 21, 2026, 1:45 PM EDT
Completed No phase listed Observational

Heart Disease in Sickle Cell Anemia

NCT00113152
View directory record Official record
Conditions
Sickle Cell Anemia, Pulmonary Hypertension
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 60 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
2
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 21, 2026, 1:45 PM EDT
Enrolling by invitation Not applicable Interventional

Functional Substrate-Only Guided VT Ablation

NCT06464315
View directory record Official record
Conditions
Ventricular Tachycardia, Sudden Cardiac Death
Interventions
Functional Substrate-Only Mapping without VT Induction, Standard-of-Care Mapping/Imaging
Procedure
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 90 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced Jul 21, 2026, 1:45 PM EDT