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ClinicalTrials.gov public records Last synced Oct 24, 2026, 6:43 PM EDT

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Showing 1–24 of 370 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Conduction Defects Clear all
Terminated Not applicable Interventional Results available

Right Ventricular Septal Pacing in Patients With Right Bundle Branch Block and Heart Failure (The SPARK Trial)

NCT02441101
View directory record Official record
Conditions
Right Bundle-Branch Block, Heart Failure
Interventions
RV DDD(R)-60 with AV optimization, RV DDD(R)-60
Device
Lead sponsor
Barry London
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jun 18, 2024 · Synced Oct 24, 2026, 6:43 PM EDT
Active, not recruiting No phase listed Observational

Aveir VR Real-World Evidence Post-Approval Study

NCT05270499
View directory record Official record
Conditions
Cardiac Pacemaker, Arrythmia, Bradycardia
Interventions
Aveir VR Leadless Pacemaker System
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
3,427 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2034
U.S. locations
1
States / cities
Sylmar, California
Source: ClinicalTrials.gov public record
Updated May 20, 2026 · Synced Oct 24, 2026, 6:43 PM EDT
Completed No phase listed Observational

Propagation ANalysis for Arrhythmogenic Conduction Elimination to Prevent Atrial Flutter and Fibrillation (PANACEA-AF)

NCT03737838
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Atrial fibrillation ablation
Device
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 7, 2024 · Synced Oct 24, 2026, 6:43 PM EDT
Completed Phase 4 Interventional Results available

Heart Rate Response to Atropine Doses Less Than 0.1mg IV to Anesthetized Infants

NCT01819064
View directory record Official record
Conditions
Bradycardia, Arrhythmias
Interventions
Atropine
Drug
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
1 Day to 2 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 6, 2023 · Synced Oct 24, 2026, 6:43 PM EDT
Recruiting Not applicable Interventional

Ablation-Index Guided Scar-Mediated Ventricular Tachycardia Ablation in Patients With Ischemic Cardiomyopathy

NCT06138873
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Sep 22, 2025 · Synced Oct 24, 2026, 6:43 PM EDT
Completed Not applicable Interventional

Effectiveness of Closed Loop Stimulation (CLS) With His Bundle Lead Placement

NCT03601754
View directory record Official record
Conditions
Sinus Node Dysfunction
Interventions
Treadmill/Bicycle exercise testing
Diagnostic Test
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 100 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 18, 2019 · Synced Oct 24, 2026, 6:43 PM EDT
Recruiting Phase 2 Interventional

Venous Ethanol for Ventricular Tachycardia

NCT05511246
View directory record Official record
Conditions
Ventricular Tachycardia, Ischemic Cardiomyopathy
Interventions
Venous ethanol, Catheter ablation
Drug · Procedure
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years to 85 Years
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 24, 2026 · Synced Oct 24, 2026, 6:43 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

AI-Enabled Direct-from-ECG Ejection Fraction (EF) Severity Assessment Using COR ECG Wearable Monitor

NCT06699056
View directory record Official record
Conditions
Ventricular Ejection Fraction, LVF, LV Dysfunction, Atrial Enlargement, Conduction Defect, Heart Failure, Valvular Heart Disease, Ischemic Heart Disease, Cardiotoxicity, Myocardial Infarction, Dilated Cardiomyopathy, HFrEF - Heart Failure With Reduced Ejection Fraction, HFpEF - Heart Failure With Preserved Ejection Fraction, Syncope, Remodeling, Cardiac
Interventions
15-minutes of sitting during COR ECG Acquistion
Device
Lead sponsor
Peerbridge Health, Inc
Industry
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
8
States / cities
Orange, California • Pasadena, California • Detroit, Michigan + 5 more
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Oct 24, 2026, 6:43 PM EDT
Recruiting Not applicable Interventional

Disrupted Sleep and Concurrent Ectopy or Atrial Fibrillation

NCT07220525
View directory record Official record
Conditions
Obstructive Sleep Apnea, Premature Ventricular Contraction (PVC), Atrial Fibrillation (AF), Premature Atrial Contraction
Interventions
HGNS Use Randomized Instructions
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 24, 2026, 6:43 PM EDT
Terminated Not applicable Interventional Results available

Bispectral Index Monitoring During Testing in the Electrophysiology Lab

NCT00749671
View directory record Official record
Conditions
Tachycardia, Ventricular
Interventions
Bispectral index monitoring, Ramsey Sedation Scale
Device · Other
Lead sponsor
Baystate Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Springfield, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 19, 2016 · Synced Oct 24, 2026, 6:43 PM EDT
Terminated Phase 2 Interventional Results available

Esmolol to Treat the Hemodynamic Effects of Septic Shock

NCT02369900
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jun 28, 2021 · Synced Oct 24, 2026, 6:43 PM EDT
Completed Phase 4 Interventional

Antiarrhythmics or Ablation for Ventricular Tachycardia 2

NCT02830360
View directory record Official record
Conditions
Ventricular Tachycardia (VT)
Interventions
Antiarrythmic Drug Therapy, Catheter ablation
Drug · Procedure
Lead sponsor
John Sapp
Other
Eligibility
18 Years and older
Enrollment
416 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2024
U.S. locations
2
States / cities
Hartford, Connecticut • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 1, 2024 · Synced Oct 24, 2026, 6:43 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 26, 2006 · Synced Oct 24, 2026, 6:43 PM EDT
Completed Phase 1 Interventional

Micra Atrial Tracking Using a Ventricular Accelerometer Study

NCT03157297
View directory record Official record
Conditions
Atrioventricular Conduction Block
Interventions
MARVEL algorithm
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
4
States / cities
Jacksonville, Florida • Miami, Florida • Atlanta, Georgia + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 26, 2018 · Synced Oct 24, 2026, 6:43 PM EDT
Completed No phase listed Observational

HBP Device EGM Data Collection

NCT03564860
View directory record Official record
Conditions
Sick Sinus Syndrome, AV Block, Heart Failure
Interventions
Device data collection
Procedure
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
3
States / cities
Huntsville, Alabama • Sayre, Pennsylvania • Greenville, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Oct 24, 2026, 6:43 PM EDT
Completed No phase listed Observational

A Comparison of Rate Response Performance in Pacemaker Patients With an Indication of Sinus Node Dysfunction

NCT02027909
View directory record Official record
Conditions
Sinus Node Dysfunction
Interventions
Reprogramming dual chamber pacemaker
Device
Lead sponsor
Arun Rao
Other
Eligibility
60 Years to 95 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Kingsport, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 25, 2018 · Synced Oct 24, 2026, 6:43 PM EDT
Completed Phase 1 Interventional

Study of the Effect of GS-6615 in Subjects With LQT-3

NCT01849003
View directory record Official record
Conditions
Long QT Syndrome
Interventions
GS-6615
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Nov 17, 2014 · Synced Oct 24, 2026, 6:43 PM EDT
Completed No phase listed Observational

Prospective Identification of Long QT Syndrome in Fetal Life

NCT02876380
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Feb 21, 2022 · Synced Oct 24, 2026, 6:43 PM EDT
Active, not recruiting No phase listed Observational

AVEIR DR Coverage With Evidence Development (CED) Study

NCT05932602
View directory record Official record
Conditions
Cardiac Pacemaker, Arrythmia, Bradycardia
Interventions
Aveir DR Leadless Pacemaker System, Dual Chamber Transvenous Pacemaker
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
2,812 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
1
States / cities
Sylmar, California
Source: ClinicalTrials.gov public record
Updated Oct 19, 2026 · Synced Oct 24, 2026, 6:43 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Determine the Incidence of Long QT Amongst a Large Cohort of Subjects Diagnosed With Unilateral or Bilateral Sensorineural Hearing Loss.

NCT02082431
View directory record Official record
Conditions
Sensorineural Hearing Loss, Long QT Syndrome
Interventions
Not listed
Lead sponsor
Pediatrix
Other
Eligibility
1 Day to 90 Days
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
12
States / cities
Anchorage, Alaska • Phoenix, Arizona • Waterford, Connecticut + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 5, 2020 · Synced Oct 24, 2026, 6:43 PM EDT
Active, not recruiting No phase listed Observational

Enlighten Study: The EV-ICD Post Approval Registry

NCT06048731
View directory record Official record
Conditions
Ventricular Arrhythmia, Tachycardia
Interventions
Defibrillation using EV-ICD
Device
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2037
U.S. locations
57
States / cities
Huntington Park, California • Redwood City, California • San Diego, California + 45 more
Source: ClinicalTrials.gov public record
Updated Oct 8, 2026 · Synced Oct 24, 2026, 6:43 PM EDT
Withdrawn Not applicable Interventional

Ventricular Arrhythmia Ablation With the Use of Non-Invasive ECG Imaging Technology

NCT04219501
View directory record Official record
Conditions
Premature Ventricular Contraction, Ventricular Tachycardia
Interventions
VIVO
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 8, 2021 · Synced Oct 24, 2026, 6:43 PM EDT
Terminated Phase 1 Interventional

Effect of Potassium and Acetazolamide on People With Andersen-Tawil Syndrome

NCT00839501
View directory record Official record
Conditions
Andersen-Tawil Syndrome
Interventions
Potassium, Acetazolamide
Dietary Supplement · Drug
Lead sponsor
University of Rochester
Other
Eligibility
10 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 20, 2012 · Synced Oct 24, 2026, 6:43 PM EDT
Recruiting No phase listed Observational

Long Term Evaluation of Cardiac Arrhythmias After Transcatheter Aortic Valve Implantation -The LOCATE Registry

NCT06055751
View directory record Official record
Conditions
Aortic Stenosis, Atrial Fibrillation New Onset, Heart Block
Interventions
TAVR Procedure and implantation of Boston Scientific Loop Recorder (LUX-Dx PMA# K193473)
Device
Lead sponsor
Kansas City Heart Rhythm Research Foundation
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
2
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 16, 2024 · Synced Oct 24, 2026, 6:43 PM EDT