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ClinicalTrials.gov public records Last synced Oct 20, 2026, 2:07 AM EDT

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Showing 73–96 of 255 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Defibrillator Clear all
Completed Phase 1 Interventional

Effects of Triiodothyronine (T3) in Ischemic Heart Failure

NCT05384847
View directory record Official record
Conditions
Heart Failure
Interventions
Thyroid hormone T3, Control Group
Drug · Other
Lead sponsor
Emory University
Other
Eligibility
18 Years to 80 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Oct 20, 2026, 2:07 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase 1 Trial to Determine Dosimetry, Biodistribution and Safety of LMI 1195-101 in Healthy Subjects and Patients With Heart Failure

NCT00891241
View directory record Official record
Conditions
Heart Failure
Interventions
LMI 1195-101
Drug
Lead sponsor
Lantheus Medical Imaging
Industry
Eligibility
18 Years to 70 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
2
States / cities
Hartford, Connecticut • New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Nov 16, 2020 · Synced Oct 20, 2026, 2:07 AM EDT
Completed No phase listed Observational

LONGEVITY Study. Evaluation of the Device and Battery Longevity of Boston Scientific Market-released ICD and CRT-D Devices

NCT02091011
View directory record Official record
Conditions
Implantable Cardioverter Defibrillators, CRT-D Cardiac Resynchronization Therapy Defibrillator
Interventions
Not listed
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
Not listed
Enrollment
1,600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
51
States / cities
Birmingham, Alabama • Glendale, Arizona • Tucson, Arizona + 44 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2022 · Synced Oct 20, 2026, 2:07 AM EDT
Completed Not applicable Interventional

A Randomised Trial of S-ICD Implantation With and Without Defibrillation Testing

NCT03495297
View directory record Official record
Conditions
Ventricular Arrythmia
Interventions
ommitence of defibrillation testing
Procedure
Lead sponsor
Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Other
Eligibility
18 Years and older
Enrollment
965 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
7
States / cities
Orlando, Florida • Atlanta, Georgia • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Oct 20, 2026, 2:07 AM EDT
Enrolling by invitation No phase listed Observational

TRAjectories and CLinical ExpeRiences of ICD Therapy Study

NCT05116176
View directory record Official record
Conditions
Implantable Defibrillator User
Interventions
Implantable cardioverter-defibrillators
Device
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
65 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Oct 20, 2026, 2:07 AM EDT
Completed No phase listed Observational

Surface ECG Signal Recording for the Implantable Subcutaneous String Defibrillator (ISSD) Detection Algorithm Performance Assessment

NCT03408951
View directory record Official record
Conditions
Tachyarrhythmia, Arrhythmias, Cardiac
Interventions
Recording
Other
Lead sponsor
NewPace Ltd
Industry
Eligibility
18 Years and older
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Roslyn, New York
Source: ClinicalTrials.gov public record
Updated Aug 21, 2019 · Synced Oct 20, 2026, 2:07 AM EDT
Completed No phase listed Observational

Necklace-Shaped Sensor for Non-Invasive Remote Monitoring of Vitals

NCT02337790
View directory record Official record
Conditions
Heart Failure, Hypertension
Interventions
Not listed
Lead sponsor
Baxter Healthcare Corporation
Industry
Eligibility
18 Years to 90 Years
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Imperial, California
Source: ClinicalTrials.gov public record
Updated Dec 30, 2015 · Synced Oct 20, 2026, 2:07 AM EDT
Completed No phase listed Observational

Assessment of S-ICD Eligibility With 12-Lead ECG

NCT03209726
View directory record Official record
Conditions
Implantable Defibrillator User
Interventions
Not listed
Lead sponsor
Larisa Tereshchenko
Other
Eligibility
18 Years and older
Enrollment
106 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 1, 2021 · Synced Oct 20, 2026, 2:07 AM EDT
Completed Not applicable Interventional Results available

Comparison of VF Induction Techniques During Medtronic ICD Implant (VF) (ICD)

NCT02027883
View directory record Official record
Conditions
Cardiomyopathy
Interventions
Nominal T shock setting, Educated T shock setting
Device
Lead sponsor
James Merrill
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Kingsport, Tennessee
Source: ClinicalTrials.gov public record
Updated May 22, 2018 · Synced Oct 20, 2026, 2:07 AM EDT
Completed Phase 4 Interventional

Reduce Ventricular Pacing in Dual Chamber Implantable Cardioverter Defibrillators Using AutoIntrinsic Conduction Search Study

NCT00187239
View directory record Official record
Conditions
Arrhythmia
Interventions
Autointrinsic Conduction Search Algorithm
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
157 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Pomona, New Jersey
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Oct 20, 2026, 2:07 AM EDT
Completed Phase 4 Interventional Results available

OptiVol® Care Pathway

NCT00847288
View directory record Official record
Conditions
Heart Failure
Interventions
Monthly Review Arm, Quarterly Review Arm
Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
1,682 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
108
States / cities
Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 105 more
Source: ClinicalTrials.gov public record
Updated May 3, 2013 · Synced Oct 20, 2026, 2:07 AM EDT
Completed Not applicable Interventional Results available

RF Surgical Sponge-Detecting System on the Function of Pacemakers and Implantable Cardioverter Defibrillators

NCT02111980
View directory record Official record
Conditions
Cardiomyopathy, Cardiac Arrhythmia, Heart Failure, Chronic Thromboembolic Pulmonary Hypertension
Interventions
RF Assure Scanning
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Dec 24, 2019 · Synced Oct 20, 2026, 2:07 AM EDT
Completed No phase listed Observational

LifeVest Wearable Cardioverter Defibrillator WEARIT-III Registry

NCT02700880
View directory record Official record
Conditions
Ischemic Heart Failure
Interventions
LifeVest
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Mar 28, 2019 · Synced Oct 20, 2026, 2:07 AM EDT
Recruiting No phase listed Observational

Implantable Cardioverter Defibrillator (ICD Registry)

NCT01999140
View directory record Official record
Conditions
Heart Failure, Nonischemic Cardiomyopathy, Ischemic Cardiomyopathy, Ventricular Arrhythmia, Complications; Device, Cardiac
Interventions
Not listed
Lead sponsor
American College of Cardiology
Other
Eligibility
Not listed
Enrollment
1,750 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2030
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Apr 18, 2024 · Synced Oct 20, 2026, 2:07 AM EDT
Recruiting Not applicable Interventional

VAPORHCS/OHSU J: MRI and Devices

NCT03915015
View directory record Official record
Conditions
MRI
Interventions
MRI
Diagnostic Test
Lead sponsor
Oregon Health and Science University
Other
Eligibility
9 Years to 99 Years
Enrollment
10,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2030
U.S. locations
2
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 15, 2024 · Synced Oct 20, 2026, 2:07 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 4, 2008 · Synced Oct 20, 2026, 2:07 AM EDT
Completed No phase listed Observational

ICD-ON Registry: Periop Management of Cardiac Devices

NCT02052453
View directory record Official record
Conditions
Oversensing Cardiac Pacemaker, ICD, Surgery
Interventions
Not listed
Lead sponsor
Edward Hospital
Other
Eligibility
18 Years and older
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
3
States / cities
Downers Grove, Illinois • Elmhurst, Illinois • Naperville, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 28, 2017 · Synced Oct 20, 2026, 2:07 AM EDT
Completed Not applicable Interventional

Correlating QLV Interval to Left Ventricular (LV) Lead Position in Patients Receiving Cardiac Resynchronization Therapy.

NCT02166762
View directory record Official record
Conditions
Heart Failure, Cardiomyopathy, Cardiac Arrhythmia
Interventions
QLV interval measurement
Procedure
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 7, 2019 · Synced Oct 20, 2026, 2:07 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 4, 2014 · Synced Oct 20, 2026, 2:07 AM EDT
Completed Not applicable Interventional Results available

Hospital Wearable Defibrillator Inpatient Study

NCT02122549
View directory record Official record
Conditions
In-Hospital Cardiac Arrest
Interventions
HWD1000
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
8
States / cities
Los Angeles, California • Danbury, Connecticut • Atlantis, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated May 31, 2017 · Synced Oct 20, 2026, 2:07 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Breathing Intervention for Cardiac Anxiety

NCT02916550
View directory record Official record
Conditions
Atrial Fibrillation, Implantable Cardioverter Defibrillator
Interventions
Breathing exercise
Behavioral
Lead sponsor
Laureate Institute for Brain Research, Inc.
Other
Eligibility
18 Years to 80 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2023
U.S. locations
1
States / cities
Tulsa, Oklahoma
Source: ClinicalTrials.gov public record
Updated Oct 6, 2023 · Synced Oct 20, 2026, 2:07 AM EDT
Active, not recruiting Not applicable Interventional

The PulsePoint Study

NCT04806958
View directory record Official record
Conditions
Out-Of-Hospital Cardiac Arrest, Heart Arrest, Heart Diseases, Cardiovascular Diseases
Interventions
PulsePoint notification
Other
Lead sponsor
Dr. Steven Brooks
Other
Eligibility
Not listed
Enrollment
340 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 20, 2026, 2:07 AM EDT
Terminated Not applicable Interventional Results available

Comparison of Cyanoacrylate Tissue Adhesive and Suture for Closure of Cardiac Device Pockets

NCT00674128
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Cyanoacrylate tissue adhesive (Dermabond), Polyglactin 910 suture (Vicryl)
Device
Lead sponsor
Mayo Clinic
Other
Eligibility
21 Years and older
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Dec 29, 2010 · Synced Oct 20, 2026, 2:07 AM EDT
Recruiting No phase listed Observational

Pacemaker and Defibrillator Lead Extraction Registry

NCT03847025
View directory record Official record
Conditions
Lead Extraction Procedures
Interventions
Not listed
Lead sponsor
Oregon Health and Science University
Other
Eligibility
Not listed
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2027
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 15, 2024 · Synced Oct 20, 2026, 2:07 AM EDT