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ClinicalTrials.gov public records Last synced Sep 28, 2026, 11:13 PM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Death, Sudden, Cardiac Clear all
Completed Phase 2 Interventional Results available

Coenzyme Q10 in Post-Cardiac Arrest Cerebral Resuscitation

NCT01319110
View directory record Official record
Conditions
Cardiac Arrest, Sudden Cardiac Arrest
Interventions
Coenzyme Q10, Placebo
Drug · Dietary Supplement
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 30, 2017 · Synced Sep 28, 2026, 11:13 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Isoproterenol Challenge to Detect Arrhythmogenic Right Ventricular Cardiomyopathy

NCT00083395
View directory record Official record
Conditions
Arrhythmic Right Ventricular Cardiomyopathy
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
Not listed
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 28, 2026, 11:13 PM 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 Sep 28, 2026, 11:13 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 Sep 28, 2026, 11:13 PM EDT
Completed Not applicable Interventional Results available

Hemodynamic Effects of Standard Cardiopulmonary Resuscitation (CPR), Active Compression Decompression CPR With an Inspiratory Impedance Device, and Standard CPR With an Intrathoracic Pressure Regulator During Out-of-hospital Cardiac Arrest

NCT01325870
View directory record Official record
Conditions
Cardiac Arrest, Sudden Cardiac Death
Interventions
ACD-CPR, ITPR, S-CPR, Impedance Threshold Device (ITD)
Device · Procedure
Lead sponsor
Advanced Circulatory Systems
Industry
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Kalamazoo, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 11, 2016 · Synced Sep 28, 2026, 11:13 PM EDT
Active, not recruiting Phase 1Phase 2 Interventional

Gene Therapy for ACM Due to a PKP2 Pathogenic Variant

NCT06109181
View directory record Official record
Conditions
Arrhythmogenic Cardiomyopathy, PKP2-ACM, PKP2-ARVC
Interventions
LX2020
Genetic
Lead sponsor
Lexeo Therapeutics
Industry
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
5
States / cities
Stanford, California • Baltimore, Maryland • Ann Arbor, Michigan + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 11, 2025 · Synced Sep 28, 2026, 11:13 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 Sep 28, 2026, 11:13 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 Sep 28, 2026, 11:13 PM EDT
Recruiting Not applicable Interventional

Developing and Testing Drone-Delivered AEDs for Cardiac Arrests In Rural America

NCT06229418
View directory record Official record
Conditions
Cardiac Arrest, Sudden Cardiac Arrest
Interventions
DFR AED Pilot Program
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Clemmons, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 28, 2026, 11:13 PM EDT
Completed No phase listed Observational

Genetic Risk Assessment of Defibrillator Events

NCT02045043
View directory record Official record
Conditions
Sudden Cardiac Death, Arrhythmias, Congestive Heart Failure, Cardiomyopathy
Interventions
Not listed
Lead sponsor
University of Iowa
Other
Eligibility
18 Years and older
Enrollment
1,807 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2012
U.S. locations
6
States / cities
Atlanta, Georgia • Boston, Massachusetts • Columbus, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2014 · Synced Sep 28, 2026, 11:13 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 21, 2015 · Synced Sep 28, 2026, 11:13 PM EDT
Terminated Not applicable Interventional Results available

Wearable Cardioverter Defibrillator in Hemodialysis Patients (WED-HED) Study

NCT02481206
View directory record Official record
Conditions
Sudden Cardiac Death, Sudden Cardiac Arrest
Interventions
Wearable Cardioverter Defibrillator
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
50 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
31
States / cities
Corona, California • Downey, California • Escondido, California + 28 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2021 · Synced Sep 28, 2026, 11:13 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 Sep 28, 2026, 11:13 PM EDT
Completed Phase 1 Interventional Results available

Study to Evaluate the Effect of Eleclazine on QT, Safety, and Tolerability in Participants With Long QT2 Syndrome

NCT02365506
View directory record Official record
Conditions
LQT2 Syndrome
Interventions
Eleclazine, Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 65 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 29, 2020 · Synced Sep 28, 2026, 11:13 PM EDT
Completed No phase listed Observational

Heart and Skeletal Muscle Problems in Neuroacanthocytosis

NCT00007228
View directory record Official record
Conditions
Choreatic Disorder
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 28, 2026, 11:13 PM EDT
Active, not recruiting No phase listed Observational

International Spontaneous Coronary Artery Dissection (SCAD) "iSCAD" Registry

NCT04496687
View directory record Official record
Conditions
Spontaneous Coronary Artery Dissection
Interventions
Not listed
Lead sponsor
SCAD Alliance
Other
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
30
States / cities
Los Angeles, California • San Francisco, California • Aurora, Colorado + 24 more
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 28, 2026, 11:13 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 20, 2023 · Synced Sep 28, 2026, 11:13 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 Sep 28, 2026, 11:13 PM EDT
Active, not recruiting Not applicable Interventional

Assessment of Combined CCM and ICD Device in HFrEF

NCT05855135
View directory record Official record
Conditions
Heart Failure, Heart Failure With Reduced Ejection Fraction, Implantable Defibrillator User, CCM Therapy, Non-ischemic Cardiomyopathy, Ischemic Cardiomyopathy, Sudden Cardiac Arrest, Arrhythmias, Cardiac, Ventricular Tachycardia, Ventricular Fibrillation
Interventions
OPTIMIZER® Integra CCM-D System (Treatment Arm)
Device
Lead sponsor
Impulse Dynamics
Industry
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
59
States / cities
Glendale, Arizona • Mesa, Arizona • Phoenix, Arizona + 40 more
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Sep 28, 2026, 11:13 PM EDT
Recruiting No phase listed Observational

HeartStart FRx Defibrillator Event Registry

NCT04250857
View directory record Official record
Conditions
Sudden Cardiac Arrest
Interventions
HeartStart FRX
Device
Lead sponsor
Heartstream US LLC
Industry
Eligibility
Not listed
Enrollment
1,400 participants
Timeline
2019 – 2030
U.S. locations
1
States / cities
Monroeville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Sep 28, 2026, 11:13 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 25, 2006 · Synced Sep 28, 2026, 11:13 PM EDT
Completed Not applicable Interventional Results available

REASSURE AV Registry

NCT01074034
View directory record Official record
Conditions
Sudden Cardiac Death, Bradycardia
Interventions
AV Therapy Assessment-B301 investigational device
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
211 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
36
States / cities
Anchorage, Alaska • Larkspur, California • Orlando, Florida + 32 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2017 · Synced Sep 28, 2026, 11:13 PM EDT
Completed No phase listed Observational

Personalized Risk Identification and Management for Arrhythmias and Heart Failure by ECG and MRI

NCT01353131
View directory record Official record
Conditions
Inpatients and Outpatients With Routine 12-lead ECG
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 70 Years
Enrollment
162 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 5, 2018 · Synced Sep 28, 2026, 11:13 PM EDT
Active, not recruiting No phase listed Observational

Longitudinal Evaluation of Active-Duty Personnel with Accessory Pathways (LEAD-AP)

NCT06798961
View directory record Official record
Conditions
Cardiac Death, Cardiac Death, Sudden, Wolf Parkinson White Syndrome
Interventions
Ablation, Standard of care without ablation
Procedure
Lead sponsor
United States Naval Medical Center, San Diego
Federal
Eligibility
18 Years to 40 Years
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Mar 13, 2025 · Synced Sep 28, 2026, 11:13 PM EDT