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ClinicalTrials.gov public records Last synced Oct 28, 2026, 11:57 PM EDT

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Showing 265–288 of 370 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Conduction Defects Clear all
Completed Not applicable Interventional

A Randomized Trial of Remote Monitoring of Implantable Cardioverter Defibrillators Versus Quarterly Device Interrogations in Clinic

NCT00606567
View directory record Official record
Conditions
Tachycardia, Ventricular, Ventricular Fibrillation
Interventions
Methods for monitoring patients with ICD's
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
151 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 14, 2014 · Synced Oct 28, 2026, 11:57 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 28, 2026, 11:57 PM EDT
Completed Not applicable Interventional Results available

Dexmedetomidine and Adenosine: Therapeutic Use for SVT

NCT01495481
View directory record Official record
Conditions
Supraventricular Tachycardia
Interventions
Dexmedetomidine, Adenosine
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
5 Years to 30 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 28, 2017 · Synced Oct 28, 2026, 11:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Heart Rhythm Twins Study

NCT05866731
View directory record Official record
Conditions
Premature Atrial Complex, Premature Ventricular Contraction
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced Oct 28, 2026, 11:57 PM EDT
Terminated Phase 3 Interventional Results available

Effect of Eleclazine on Shortening of the QT Interval, Safety, and Tolerability in Adults With Long QT Syndrome Type 3

NCT02300558
View directory record Official record
Conditions
Long QT Syndrome Type 3
Interventions
Eleclazine, Eleclazine placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 70 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
3
States / cities
Rochester, Minnesota • New York, New York • Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 12, 2018 · Synced Oct 28, 2026, 11:57 PM EDT
Completed Not applicable Interventional Results available

ImageReady(TM) MR Conditional Pacing System Clinical Study

NCT01781078
View directory record Official record
Conditions
Bradycardia, Sinus Node Dysfunction
Interventions
MRI, ImageReady System implant
Radiation · Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
363 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
29
States / cities
Mesa, Arizona • Los Angeles, California • San Francisco, California + 26 more
Source: ClinicalTrials.gov public record
Updated Dec 3, 2019 · Synced Oct 28, 2026, 11:57 PM EDT
Completed No phase listed Observational

Non-Invasive 3D Mapping for Identifying Origin and Preferential Propagation of Ventricular Arrhythmias

NCT03831516
View directory record Official record
Conditions
Premature Ventricular Complex, Ventricular Arrythmia
Interventions
Non Invasive Electroanatomical Mapping
Diagnostic Test
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 20, 2022 · Synced Oct 28, 2026, 11:57 PM EDT
Completed Not applicable Interventional

Acute Study to Collect Electrical Signals From the Heart Using a Special Lead

NCT02772380
View directory record Official record
Conditions
Tachycardia, Ventricular Arrhythmias
Interventions
Defibrillation following induction of VT/VF
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
14
States / cities
Scottsdale, Arizona • Hartford, Connecticut • Jacksonville, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 19, 2018 · Synced Oct 28, 2026, 11:57 PM 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 28, 2026, 11:57 PM 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 28, 2026, 11:57 PM EDT
Terminated No phase listed Observational Results available

OMNI Study--Assessing Therapies in Medtronic Pacemaker, Defibrillator, and Cardiac Resynchronization Therapy Devices.

NCT00277524
View directory record Official record
Conditions
Tachycardia, Ventricular, Heart Failure, Congestive, Ventricular Fibrillation, Ventricular Dysfunction, Bradycardia
Interventions
Not listed
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
3,032 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
113
States / cities
Tucson, Arizona • Little Rock, Arkansas • Fresno, California + 107 more
Source: ClinicalTrials.gov public record
Updated Aug 28, 2013 · Synced Oct 28, 2026, 11:57 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Influence of Testosterone Administration on Drug-Induced QT Interval Prolongation and Torsades de Pointes

NCT02513940
View directory record Official record
Conditions
Long QT Syndrome
Interventions
Testosterone, Progesterone, Placebo, Ibutilide
Drug
Lead sponsor
Indiana University
Other
Eligibility
65 Years and older · Male only
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 28, 2019 · Synced Oct 28, 2026, 11:57 PM EDT
Completed Not applicable Interventional Results available

Intramural Needle Ablation for Ablation of Recurrent Ventricular Tachycardia

NCT01791543
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Intramural Needle Ablation Catheter
Device
Lead sponsor
William Stevenson
Other
Eligibility
18 Years and older
Enrollment
115 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
2
States / cities
Boston, Massachusetts • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 1, 2023 · Synced Oct 28, 2026, 11:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Surpoint Algorithm for Improved Guidance of Ablation for Ventricular Tachycardia

NCT05618717
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Radiofrequency Ablation
Device
Lead sponsor
Rush University Medical Center
Other
Eligibility
19 Years to 80 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 5, 2023 · Synced Oct 28, 2026, 11:57 PM EDT
Terminated Phase 3 Interventional Results available

Safety Study of Intranasal Etripamil for the Termination of Spontaneous Episodes of Paroxysmal Supraventricular Tachycardia (PSVT). NODE-302

NCT03635996
View directory record Official record
Conditions
Paroxysmal Supraventricular Tachycardia
Interventions
Etripamil NS 70 mg, Aptar Pharma Nasal Spray Bidose System
Drug · Device
Lead sponsor
Milestone Pharmaceuticals Inc.
Other
Eligibility
18 Years and older
Enrollment
169 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
22
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Los Alamitos, California + 18 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2024 · Synced Oct 28, 2026, 11:57 PM 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 28, 2026, 11:57 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Defining the Risk of Ventricular Tachycardia in Genetic Forms of Early-onset Atrial Fibrillation

NCT06647459
View directory record Official record
Conditions
Ventricular Tachycardia, Atrial Fibrillation
Interventions
EP Study
Diagnostic Test
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Oct 28, 2026, 11:57 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 28, 2026, 11:57 PM EDT
Active, not recruiting Not applicable Interventional

Breathing Device in Postural Orthostatic Tachycardia Syndrome (POTS)

NCT00962728
View directory record Official record
Conditions
Postural Tachycardia Syndrome, Postural Orthostatic Tachycardia Syndrome
Interventions
Inspiratory Threshold Device (Res-Q-Gard ITD), Sham Inspiratory Threshold Device
Device
Lead sponsor
Alfredo Gamboa
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 22, 2025 · Synced Oct 28, 2026, 11:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetics of Eleclazine in Adults With Normal and Impaired Renal Function

NCT02441829
View directory record Official record
Conditions
Long QT Syndrome
Interventions
Eleclazine
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 75 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
5
States / cities
DeLand, Florida • Miami, Florida • Orlando, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 22, 2015 · Synced Oct 28, 2026, 11:57 PM EDT
Recruiting No phase listed Observational

Cardioneuroablation for Recurrent Vasovagal Syncope and Bradyarrhythmias: The CNA-FWRD Registry

NCT06166277
View directory record Official record
Conditions
Vasovagal Syncope, AV Block-2Nd Degree-Type 1, Sinus Pause
Interventions
Ablation procedure
Procedure
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 60 Years
Enrollment
300 participants
Timeline
2024 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 18, 2025 · Synced Oct 28, 2026, 11:57 PM EDT
Completed Not applicable Interventional

Effectiveness of the Eko Digital Stethoscope in Capturing Infant ECGs

NCT06382207
View directory record Official record
Conditions
Tachyarrhythmia
Interventions
Eko Duo electronic stethoscope, CORE 500 electronic stethoscope
Device
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
Up to 1 Year
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Oct 28, 2026, 11:57 PM EDT
Completed Not applicable Interventional Results available

Randomized Study of the Use of Warfarin During Pacemaker or ICD Implantation in Patients Requiring Long Term Anticoagulation

NCT00721136
View directory record Official record
Conditions
Bradycardia, Tachycardia, Atrial Fibrillation, Valvular Heart Disease
Interventions
continue warfarin through the procedure, Hold warfarin, Warfarin held with heparin transition.
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 99 Years
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
2
States / cities
Baltimore, Maryland • Columbia, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 31, 2017 · Synced Oct 28, 2026, 11:57 PM EDT
Not listed No phase listed Observational

Gut Microbiome and Ventricular Arrhythmias

NCT04466072
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Gut Microbiome
Interventions
Stool test for microbial analysis
Diagnostic Test
Lead sponsor
North Florida Foundation for Research and Education
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Apr 18, 2022 · Synced Oct 28, 2026, 11:57 PM EDT