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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 Clear all
Not listed No phase listed Observational

Characterization and Prediction of Atrial Fibrillation-caused Adverse Events After Hospital Discharge for Cardiac Surgery

NCT03466125
View directory record Official record
Conditions
Atrial Fibrillation, Stroke, Acute, Death
Interventions
Cardiac surgery
Procedure
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
20 Years to 99 Years
Enrollment
25,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 7, 2023 · Synced Jul 21, 2026, 1:42 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
Philips Clinical & Medical Affairs Global
Industry
Eligibility
Not listed
Enrollment
1,400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 25, 2025 · Synced Jul 21, 2026, 1:42 PM EDT
Completed Not applicable Interventional Results available

Improving Communication About Serious Illness

NCT01933789
View directory record Official record
Conditions
Critical Illness, Chronic Disease, Terminal Care, Palliative Care, Communication, Advance Care Planning, Neoplasm Metastasis, Lung Neoplasms, Pulmonary Disease, Chronic Obstructive, Heart Failure, End Stage Liver Disease, Kidney Failure, Chronic
Interventions
Communication Feedback Form for Patients with Serious Illness
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
817 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
6
States / cities
Renton, Washington • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 19, 2019 · Synced Jul 21, 2026, 1:42 PM EDT
Completed Not applicable Interventional Results available

Donors After Circulatory Death Heart Trial

NCT03831048
View directory record Official record
Conditions
Heart Transplant
Interventions
OCS Heart System, Cold Storage
Device · Other
Lead sponsor
TransMedics
Industry
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
25
States / cities
La Jolla, California • Los Angeles, California • Palo Alto, California + 19 more
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Jul 21, 2026, 1:42 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 4, 2023 · Synced Jul 21, 2026, 1:42 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 20, 2013 · Synced Jul 21, 2026, 1:42 PM EDT
Completed Phase 3 Interventional Results available

Prevention of Cardiovascular Events (eg, Death From Heart or Vascular Disease, Heart Attack, or Stroke) in Patients With Prior Heart Attack Using Ticagrelor Compared to Placebo on a Background of Aspirin

NCT01225562
View directory record Official record
Conditions
Myocardial Infarction, Cardiovascular Death, Atherothrombosis, Stroke
Interventions
Ticagrelor 90 mg, Ticagrelor 60 mg, Ticagrelor Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
50 Years to 130 Years
Enrollment
21,379 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
250
States / cities
Alexander City, Alabama • Athens, Alabama • Birmingham, Alabama + 247 more
Source: ClinicalTrials.gov public record
Updated Jan 24, 2016 · Synced Jul 21, 2026, 1:42 PM EDT
Not listed No phase listed Observational

South Asian Arrhythmogenic Cardiomyopathy Registry

NCT04895540
View directory record Official record
Conditions
Arrhythmogenic Right Ventricular Cardiomyopathy, Arrhythmogenic Right Ventricular Dysplasia, Arrhythmogenic Ventricular Cardiomyopathy, Arrhythmogenic Cardiomyopathy, Ventricular Tachycardia, Sudden Cardiac Death
Interventions
ECG, Echocardiography, Cardiac MRI, Ambulatory ECG recording, Cardiac EP study, All study subjects will undergo sample collection for genetic testing.
Diagnostic Test · Genetic
Lead sponsor
Sheri Kashmir Institute of Medical Sciences
Other
Eligibility
Not listed
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 1, 2021 · Synced Jul 21, 2026, 1:42 PM EDT
Completed No phase listed Observational Results available

Heart Failure Optimization Study

NCT03016754
View directory record Official record
Conditions
Sudden Cardiac Death, Sudden Cardiac Arrest, Heart Failure, Heart Failure Low Output
Interventions
Wearable Cardioverter Defibrillator
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
602 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
39
States / cities
Birmingham, Alabama • West Hills, California • Fernandina Beach, Florida + 34 more
Source: ClinicalTrials.gov public record
Updated Mar 23, 2025 · Synced Jul 21, 2026, 1:42 PM EDT
Completed Phase 1 Interventional

Nurses Helping Sudden Cardiac Arrest Survivors Recover After Getting An Implantable Cardioverter Defibrillator (ICD)

NCT00226681
View directory record Official record
Conditions
Sudden Cardiac Arrest
Interventions
Nursing Telephone Support Protocol, Usual Care
Behavioral
Lead sponsor
National Institute of Nursing Research (NINR)
NIH
Eligibility
12 Years to 90 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2004
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 9, 2008 · Synced Jul 21, 2026, 1:42 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

AI-guided Prediction and Treatment of Cardiac Arrest

NCT07452016
View directory record Official record
Conditions
Sudden Cardiac Arrest
Interventions
Machine learning-guided cardiac arrest prediction device
Device
Lead sponsor
MetroHealth Medical Center
Other
Eligibility
18 Years and older
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Jul 21, 2026, 1:42 PM EDT
Completed Not applicable Interventional

Evaluation of Safety and Effectiveness of The SherpaPak in Donation After Circulatory Death Heart Transplantation

NCT05038943
View directory record Official record
Conditions
Heart Transplant Failure, Determination of Death, Outcomes Research, Extracorporeal Membrane Oxygenation
Interventions
Paragonix SherpaPak Cardiac Transport System
Device
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 27, 2023 · Synced Jul 21, 2026, 1:42 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 23, 2014 · Synced Jul 21, 2026, 1:42 PM EDT
Not listed Not applicable Interventional

Sodium Channel Splicing in Heart Failure Trial (SOCS-HEFT) Prospective Study

NCT02738749
View directory record Official record
Conditions
Death, Sudden, Cardiac
Interventions
Implantable cardioverter-defibrillator (ICD)
Device
Lead sponsor
Rhode Island Hospital
Other
Eligibility
18 Years and older
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 11, 2017 · Synced Jul 21, 2026, 1:42 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Examining the Long-Term Risks of Oophorectomy

NCT00655447
View directory record Official record
Conditions
Coronary Heart Disease, Stroke, Breast Cancer, Ovarian Cancer, Cancer, Hip Fracture, Death
Interventions
Not listed
Lead sponsor
Parker, William H., M.D.
Other
Eligibility
30 Years to 55 Years · Female only
Enrollment
32,175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1980 – 2004
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Apr 8, 2008 · Synced Jul 21, 2026, 1:42 PM EDT
Completed Phase 3 Interventional

Ovatio DR and VR Implantable Cardioverter Defibrillators Post-approval Study

NCT00586378
View directory record Official record
Conditions
Sudden Cardiac Death
Interventions
Ovatio DR and Ovatio VR
Device
Lead sponsor
ELA Medical, Inc.
Industry
Eligibility
18 Years and older
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Mesa, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 1, 2012 · Synced Jul 21, 2026, 1:42 PM EDT
Recruiting Phase 3 Interventional

Phase III Study Investigating Heart Failure and Cardiovascular Death With Baxdrostat in Combination With Dapagliflozin

NCT06677060
View directory record Official record
Conditions
Heart Failure
Interventions
Baxdrostat and dapagliflozin, Placebo and dapagliflozin
Drug · Other
Lead sponsor
AstraZeneca
Industry
Eligibility
40 Years and older
Enrollment
11,300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
194
States / cities
Birmingham, Alabama • Centreville, Alabama • Fairhope, Alabama + 173 more
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Jul 21, 2026, 1:42 PM EDT
Completed No phase listed Observational

Cardiac Arrhythmias In Patients With Coronavirus Disease (COVID-19)

NCT04358029
View directory record Official record
Conditions
COVID 19 Cardiac, COVID 16 Arrhythmia, COVID 19 Death
Interventions
Not listed
Lead sponsor
Vivek Reddy
Other
Eligibility
Not listed
Enrollment
4,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 4, 2024 · Synced Jul 21, 2026, 1:42 PM EDT
Terminated No phase listed Observational

Observational Study of Cardiovascular Disease.

NCT04128475
View directory record Official record
Conditions
Cardiovascular Diseases, Cardiovascular Morbidity, Coronary Heart Disease, Low-density-lipoprotein-type
Interventions
N/A - observational study.
Other
Lead sponsor
University of Sydney
Other
Eligibility
Not listed
Enrollment
1,137 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 7, 2024 · Synced Jul 21, 2026, 1:42 PM EDT
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, 1:42 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, 1:42 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, 1:42 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, 1:42 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, 1:42 PM EDT