Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 28, 2026, 8:18 AM EDT

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Showing 241–264 of 370 matching trials from the live ClinicalTrials.gov search.
Conditions
Heart Failure, Left Bundle-Branch Block
Interventions
Mapping and Pacing the His Bundle, Placing a guidewire in Coronary sinus for measurement of Q-LV during His Bundle pacing or, if needed, for LV pacing
Procedure
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Tampa, Florida
Conditions
Tachycardia, Ventricular
Interventions
Varian Cardiac Radioablation (CRA), Catheter Ablation (CA)
Device · Procedure
Lead sponsor
Varian, a Siemens Healthineers Company
Industry
Eligibility
18 Years and older
Enrollment
380 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
11
States / cities
Los Angeles, California • Hartford, Connecticut • Boston, Massachusetts + 8 more
Conditions
Arrhythmias, Cardiac, Heart Block
Interventions
Holter Monitor, Zio Patch
Device
Lead sponsor
Columbia University
Other
Eligibility
Up to 21 Years
Enrollment
247 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
New York, New York
Terminated Phase 2 Interventional Results available

Esmolol to Treat the Hemodynamic Effects of Septic Shock

NCT02369900
Conditions
Septic Shock, Hypotension, Tachycardia
Interventions
Esmolol, Saline
Drug · Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Completed No phase listed Observational Results available

Pacemaker Therapy in Adults With Congenital Heart Defects

NCT00303511
Conditions
Congenital Disorder
Interventions
Not listed
Lead sponsor
Emory University
Other
Eligibility
19 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2006
U.S. locations
1
States / cities
Atlanta, Georgia
Completed No phase listed Observational

MAVRIC VR ICD Registry

NCT00270933
Conditions
Ventricular Tachycardia, Ventricular Fibrillation
Interventions
Registry
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
742 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
81
States / cities
Birmingham, Alabama • Tuscaloosa, Alabama • Little Rock, Arkansas + 78 more
Conditions
Ventricular Tachycardia
Interventions
Dantrolene/Ryanodex, Placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Nashville, Tennessee
Conditions
Atrial Fibrillation, Ventricular Tachycardia
Interventions
CoVa-2 Monitoring System
Diagnostic Test
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
New York, New York
Conditions
Irregular Heart Rate
Interventions
Not listed
Lead sponsor
Emory University
Other
Eligibility
Not listed
Enrollment
145 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Atlanta, Georgia
Conditions
Refractory Ventricular Tachycardia
Interventions
Stereotactic Ablative Radiotherapy (SABR)
Radiation
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Conditions
Long QT Syndrome
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 45 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Aurora, Colorado
Conditions
Heart Failure, Right Bundle-Branch Block
Interventions
VVI-40, RV DDD-40, BiV DDD-40
Device
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
2
States / cities
Durham, North Carolina
Active, not recruiting Not applicable Interventional

Assessment of Combined CCM and ICD Device in HFrEF

NCT05855135
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
Conditions
Sinus Node Dysfunction, Bradycardia, Atrioventricular Block
Interventions
Solia CSP S lead
Device
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
10
States / cities
Phoenix, Arizona • Ventura, California • Sarasota, Florida + 6 more
Conditions
Syncope, Presyncope, Palpitations, Atrial Fibrillation, Supraventricular Tachycardia
Interventions
Not listed
Lead sponsor
Bardy Diagnostics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
4
States / cities
Chicago, Illinois • Iowa City, Iowa • Charlotte, North Carolina + 1 more
Conditions
Healthy
Interventions
Tramadol HCl, 50 mg, Placebo
Drug
Lead sponsor
Janssen Scientific Affairs, LLC
Industry
Eligibility
18 Years to 45 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Overland Park, Kansas
Conditions
Ventricular Tachycardia, Ischemic Cardiomyopathy
Interventions
Ablation-index guided ventricular tachycardia ablation, Ventricular tachycardia ablation with no AI-guidance
Procedure
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
5
States / cities
Chicago, Illinois • Boston, Massachusetts • Ann Arbor, Michigan + 2 more
Conditions
Prolonged QT Interval
Interventions
Not listed
Lead sponsor
Vanderbilt University
Other
Eligibility
21 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Nashville, Tennessee
Conditions
Tachycardia
Interventions
OVATIO DR 6550
Device
Lead sponsor
LivaNova
Industry
Eligibility
18 Years and older
Enrollment
462 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2013
U.S. locations
5
States / cities
Atlanta, Georgia • Decatur, Georgia • Mandeville, Louisiana + 2 more
Conditions
Ventricular Premature Complexes, Myocardial Ischemia
Interventions
ranolazine
Drug
Lead sponsor
Kent Hospital, Rhode Island
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Warwick, Rhode Island
Completed Not applicable Interventional Results available

Magnetic Stimulation to Treat VT Storm

NCT04043312
Conditions
Ventricular Tachycardia
Interventions
Magstim SuperRapid
Device
Lead sponsor
University of Pennsylvania
Other
Eligibility
19 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
Arrhythmias, Cardiac, Atrial Fibrillation, Atrial Flutter, Bradycardia, Tachycardia
Interventions
Vectorcardiography (VECG)
Device
Lead sponsor
HeartBeam, Inc.
Industry
Eligibility
18 Years and older
Enrollment
198 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
5
States / cities
Atlanta, Georgia • Tucker, Georgia • New York, New York + 2 more
Conditions
Atrioventricular Block, Heart Diseases
Interventions
Cardiac Resynchronization Therapy (CRT)
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
918 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2013
U.S. locations
51
States / cities
Anchorage, Alaska • Peoria, Arizona • Little Rock, Arkansas + 48 more
Conditions
Left Branch Bundle Block, RV - Right Ventricular Abnormality
Interventions
Pacemaker Interrogation and Electrocardiogram (ECG):, Cardiopulmonary Exercise Test (CPET) and Exercise Stress Cardiac Magnetic Resonance (ExeCMR, Continuous pacemaker telemetry (CPT)
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Richmond, Virginia