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ClinicalTrials.gov public records Last synced Oct 25, 2026, 4:32 AM EDT

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Showing 73–96 of 370 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Conduction Defects Clear all
Terminated Phase 1 Interventional

High Sodium Diet and External Abdominal Compression in POTS

NCT01771484
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
External automated abdominal binder
Device
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 60 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 18, 2017 · Synced Oct 25, 2026, 4:32 AM EDT
Completed Not applicable Interventional

MRI Assessment of Arrythmia Ablation Lesions

NCT02761343
View directory record Official record
Conditions
Ventricular Tachycardia, Cardiac Arrhythmia
Interventions
MRI scan
Other
Lead sponsor
Children's National Research Institute
Other
Eligibility
Not listed
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jan 21, 2020 · Synced Oct 25, 2026, 4:32 AM EDT
Completed Not applicable Interventional Results available

Aveir DR i2i Study

NCT05252702
View directory record Official record
Conditions
Cardiac Pacemaker, Artificial, Cardiac Rhythm Disorder, Bradycardia
Interventions
Aveir DR Leadless Pacemaker System
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
464 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
54
States / cities
Scottsdale, Arizona • Jonesboro, Arkansas • Little Rock, Arkansas + 44 more
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Oct 25, 2026, 4:32 AM EDT
Completed Phase 4 Interventional Results available

Remifentanil Intravenous Patient Controlled Analgesia (IVPCA) for Ablation of Idiopathic Ventricular Tachycardia

NCT01901575
View directory record Official record
Conditions
Tachycardia, Ventricular
Interventions
Remifentanil
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 2, 2018 · Synced Oct 25, 2026, 4:32 AM EDT
Not listed Phase 4 Interventional

Novel Form of Acquired Long QT Syndrome

NCT04169100
View directory record Official record
Conditions
Long QT Syndrome, Connective Tissue Diseases, Rheumatoid Arthritis
Interventions
Prednisone
Drug
Lead sponsor
Narrows Institute for Biomedical Research
Other
Eligibility
18 Years to 89 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 11, 2022 · Synced Oct 25, 2026, 4:32 AM EDT
Terminated Not applicable Interventional Results available

Pacing Affects Cardiovascular Endpoints in Patients With Right Bundle-Branch Block (The PACE-RBBB Trial)

NCT01169493
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Sep 23, 2016 · Synced Oct 25, 2026, 4:32 AM EDT
Active, not recruiting No phase listed Observational

Abbott Ventricular Tachycardia PAS

NCT05839873
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
FlexAbility SE Ablation Catheter
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
7 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
11
States / cities
Naples, Florida • Indianapolis, Indiana • Overland Park, Kansas + 8 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Oct 25, 2026, 4:32 AM EDT
Completed Not applicable Interventional

Functional Outcomes in CondUction System Pacing and Right Ventricular Synchrony (FOCUS-Right)

NCT06601322
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Oct 25, 2026, 4:32 AM EDT
Not listed Phase 2 Interventional

Sole-Therapy Treatment of Atrial Fibrillation

NCT00566176
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Surgical Ablation using the AtriCure Bipolar System
Device
Lead sponsor
AtriCure, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2017
U.S. locations
5
States / cities
Tampa, Florida • Cincinnati, Ohio • Oklahoma City, Oklahoma + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2013 · Synced Oct 25, 2026, 4:32 AM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Cor360: Clinician-Facing Broad-Spectrum Cardiac Phenotyping and Risk Assessment Using COR® Wearable ECG to Inform Outcomes-Oriented Care Pathways

NCT07775976
View directory record Official record
Conditions
Cardiovascular Diseases, Cardiovascular Diseases Risk, Cardiac Conduction System Disease, Bundle/Fascicular Abnormalities, His-Purkinje Disease, Arrhythmias, Cardiac, Rhythm Phenotypes, Myocardial Ischemia, Syncope, Syncope Recurrent, Syncope and Collapse, Seizure Disorder, Sleep Apnea Syndrome, Obstructive, Decision Support Systems, Clinical, Heart Failure - NYHA II - IV, Heart Failure (for Example, Fluid Overload), HRV, Cardiopulmonary, Sudden Cardiac Arrest, Cardiac Arrest (CA), Ventricular Arrhythmias and Cardiac Arrest, Ventricular Fibrillation, QT Dispersion, Atrial Cardiomyopathy
Interventions
COR Wearable ECG Monitoring, Cor360 Clinician-Facing Decision-Aid Reporting
Device · Other
Lead sponsor
Peerbridge Health, Inc
Industry
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
2
States / cities
Pasadena, California • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 25, 2026, 4:32 AM EDT
Enrolling by invitation Not applicable Interventional

Treatment of Focal Ventricular Tachycardias Using a Pulsed Field Ablation From a Point Ablation Catheter Short Title FOCUS-PFA

NCT06747013
View directory record Official record
Conditions
Focal Ventricular Arrhythmias, Premature Ventricular Contractions, Ventricular Tachycardias
Interventions
Point Ablation Catheter
Device
Lead sponsor
Vivek Reddy
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Oct 25, 2026, 4:32 AM EDT
Completed No phase listed Observational

Diagnostic Value and Safety of Flecainide Infusion Test in Brugada Syndrome

NCT02302274
View directory record Official record
Conditions
Brugada Syndrome, Arrhythmogenic Right Ventricular Cardiomyopathy
Interventions
flecainide iv
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 75 Years
Enrollment
209 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 18, 2019 · Synced Oct 25, 2026, 4:32 AM EDT
Recruiting No phase listed Observational

Role of Novel ILR in the Management of PVCs

NCT06060548
View directory record Official record
Conditions
PVC - Premature Ventricular Contraction, Myocarditis
Interventions
Monitoring of patients presenting with PVCs
Other
Lead sponsor
Kansas City Heart Rhythm Research Foundation
Other
Eligibility
18 Years and older
Enrollment
50 participants
Timeline
2022 – 2025
U.S. locations
6
States / cities
Overland Park, Kansas • Independence, Missouri • Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 28, 2025 · Synced Oct 25, 2026, 4:32 AM EDT
Completed Not applicable Interventional

Confirm Rx™ Versus Reveal LINQ™ - Which is More Reliable in Data Transmission? A Randomized Clinical Study

NCT03720639
View directory record Official record
Conditions
Cardiac Arrythmias, Syncope, Atrial Fibrillation, Atrial Flutter, Tachycardia, Stroke
Interventions
Abbott, Inc Confirm Rx™ versus Medtronic, Inc Reveal LINQTM
Device
Lead sponsor
Sparrow Clinical Research Institute
Other
Eligibility
18 Years and older
Enrollment
209 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
2
States / cities
Lansing, Michigan • Traverse City, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 10, 2020 · Synced Oct 25, 2026, 4:32 AM EDT
Completed Not applicable Interventional Results available

Long QT Syndrome and Sleep Apnea

NCT03678311
View directory record Official record
Conditions
Long QT Syndrome, Sleep Apnea
Interventions
Continuous Positive Airway Pressure (CPAP)
Device
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 2, 2020 · Synced Oct 25, 2026, 4:32 AM EDT
Recruiting Not applicable Interventional

Saline Enhanced Radiofrequency (SERF) Needle Ablation for Refractory VT

NCT05337241
View directory record Official record
Conditions
Refractory Ventricular Tachycardia
Interventions
Saline Enhanced Radiofrequency (SERF) Ablation
Device
Lead sponsor
Thermedical, Inc.
Industry
Eligibility
18 Years and older
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
5
States / cities
Birmingham, Alabama • Philadelphia, Pennsylvania • Charleston, South Carolina + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2025 · Synced Oct 25, 2026, 4:32 AM EDT
Terminated Not applicable Interventional

Adaptive Cardiac Resynchronization Therapy in Patients With RBBB

NCT05936294
View directory record Official record
Conditions
Right Bundle-Branch Block
Interventions
Optimization of CRT Device
Diagnostic Test
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years to 89 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
2
States / cities
Little Rock, Arkansas • Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 7, 2023 · Synced Oct 25, 2026, 4:32 AM EDT
Completed Phase 3 Interventional Results available

Vein of Marshall Ethanol Infusion for Persistent Atrial Fibrillation

NCT01898221
View directory record Official record
Conditions
Ventricular Tachycardia, Atrial Fibrillation
Interventions
Ethanol, Ablation
Drug · Procedure
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years to 85 Years
Enrollment
343 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
12
States / cities
Phoenix, Arizona • Los Angeles, California • San Diego, California + 7 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2025 · Synced Oct 25, 2026, 4:32 AM EDT
Completed No phase listed Observational

Long QT Syndrome-Population Genetics and Cardiac Studies

NCT00005176
View directory record Official record
Conditions
Cardiovascular Diseases, Heart Diseases, Ventricular Arrhythmia, Long QT Syndrome
Interventions
Not listed
Lead sponsor
University of Rochester
Other
Eligibility
Up to 100 Years
Enrollment
2,125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1985 – 2013
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Oct 22, 2015 · Synced Oct 25, 2026, 4:32 AM EDT
Completed Not applicable Interventional Results available

Ablation at Virtual-hEart pRedicted Targets for VT

NCT03536052
View directory record Official record
Conditions
Ventricular Tachycardia, Ischemic Cardiomyopathy
Interventions
Virtual Heart Guided Ablation
Device
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Oct 25, 2026, 4:32 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Pathophysiology of Orthostatic Intolerance

NCT00608725
View directory record Official record
Conditions
Tachycardia, Postural Orthostatic Tachycardia Syndrome
Interventions
DAXOR, QSweat, Intrinsic Heart Rate
Radiation · Procedure · Drug
Lead sponsor
Satish R. Raj
Other
Eligibility
18 Years to 80 Years
Enrollment
260 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1996 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 25, 2026, 4:32 AM EDT
Not listed Phase 4 Interventional

Effect of Ivabradine in Stage D HF/Cardiogenic Shock Patients on Dobutamine

NCT03387605
View directory record Official record
Conditions
Heart Failure, Cardiogenic Shock, Tachycardia
Interventions
Ivabradine, Placebo
Drug
Lead sponsor
Loyola University
Other
Eligibility
18 Years to 99 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Maywood, Illinois
Source: ClinicalTrials.gov public record
Updated May 23, 2019 · Synced Oct 25, 2026, 4:32 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Dose Ranging Escalation Study of Tramadol Hydrochloride in Healthy Volunteers

NCT01947920
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Dec 16, 2014 · Synced Oct 25, 2026, 4:32 AM EDT
Recruiting No phase listed Observational

Left Bundle Branch Area Mapping for Conduction System Pacing

NCT05884359
View directory record Official record
Conditions
Left Bundle-Branch Block, Pacemaker DDD
Interventions
3D Electroanatomical Mapping (NavX)
Diagnostic Test
Lead sponsor
Steward St. Elizabeth's Medical Center of Boston, Inc.
Other
Eligibility
18 Years to 88 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Oct 25, 2026, 4:32 AM EDT