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Showing 1–24 of 113 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Conduction Disorder of the Heart Clear all
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 4, 2020 · Synced Jul 21, 2026, 7:32 PM EDT
Completed Not applicable Interventional

AIMIGo 12L ECG Synthesis Software Pivotal Study for Arrythmia Detection

NCT06123130
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jul 4, 2024 · Synced Jul 21, 2026, 7:32 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Magnesium Supplementation for the Prevention of Supraventricular Arrhythmias

NCT02837328
View directory record Official record
Conditions
Premature Atrial Contraction
Interventions
Oral Magnesium Supplement, Placebo
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
55 Years and older
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 31, 2019 · Synced Jul 21, 2026, 7:32 PM EDT
Completed Phase 4 Interventional

Syncope: Pacing or Recording in the Later Years

NCT01423994
View directory record Official record
Conditions
Syncope, Heart Block, Conduction Disorder of the Heart
Interventions
pacemaker, implantable loop recorder
Procedure
Lead sponsor
Canadian Institutes of Health Research (CIHR)
Government
Eligibility
Not listed
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 15, 2019 · Synced Jul 21, 2026, 7:32 PM EDT
Terminated Phase 3 Interventional Results available

Efficacy and Safety of Etripamil for the Termination of Spontaneous Paroxysmal Supraventricular Tachycardia (PSVT).

NCT03464019
View directory record Official record
Conditions
Paroxysmal Supraventricular Tachycardia
Interventions
Etripamil, Placebo, Etripamil Test Dose
Drug
Lead sponsor
Milestone Pharmaceuticals Inc.
Other
Eligibility
18 Years and older
Enrollment
1,097 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
54
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Cerritos, California + 44 more
Source: ClinicalTrials.gov public record
Updated Jul 11, 2024 · Synced Jul 21, 2026, 7:32 PM EDT
Completed No phase listed Observational

NTX Wireless Patient Monitoring System

NCT00654693
View directory record Official record
Conditions
Desaturation, Bradycardia, Tachycardia, Hypertension, Hypotension
Interventions
Rapid Response Team
Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 6, 2012 · Synced Jul 21, 2026, 7:32 PM EDT
Terminated No phase listed Observational

The Use of CT to Identify Damaged Heart Muscle in Patients Undergoing Ventricular Tachycardia Ablation.

NCT00583284
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Not listed
Lead sponsor
The Cleveland Clinic
Other
Eligibility
21 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 19, 2017 · Synced Jul 21, 2026, 7:32 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate the Effect of GSK1265744 on Cardiac Conduction

NCT02027454
View directory record Official record
Conditions
Infection, Human Immunodeficiency Virus
Interventions
GSK1265744, GSK1265744 matching placebo, Moxifloxacin
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years to 55 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 15, 2014 · Synced Jul 21, 2026, 7:32 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Dobutamine on the Cardiac Conduction System

NCT04249258
View directory record Official record
Conditions
Arrhythmias, Cardiac
Interventions
Dobutamine
Drug
Lead sponsor
Northwell Health
Other
Eligibility
18 Years to 80 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Jan 25, 2022 · Synced Jul 21, 2026, 7:32 PM EDT
Recruiting Not applicable Interventional

BIOTRONIK Investigation of the LivIQ Leadless Pacemaker System

NCT07118358
View directory record Official record
Conditions
Leadless Pacemaker, Bradycardia, AV Block, Cardiac Rhythm Disorder
Interventions
LivIQ Leadless Pacemaker System
Device
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
325 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
5
States / cities
Ypsilanti, Michigan • New York, New York • Winston-Salem, North Carolina + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Jul 21, 2026, 7:32 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 5, 2026 · Synced Jul 21, 2026, 7:32 PM EDT
Completed Not applicable Interventional

FLExAbility Sensor Enabled Substrate Targeted Ablation for the Reduction of VT Study

NCT03490201
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Market Approved RF Ablation System, FlexAbility SE Ablation Catheter
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
592 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
23
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 18 more
Source: ClinicalTrials.gov public record
Updated Jan 7, 2025 · Synced Jul 21, 2026, 7:32 PM 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 3, 2019 · Synced Jul 21, 2026, 7:32 PM EDT
Enrolling by invitation No phase listed Observational

Virtual Reality in Electrophysiology Laboratory (EP)

NCT04893278
View directory record Official record
Conditions
PVC - Premature Ventricular Complex, Ablation
Interventions
Virtual reality
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Jul 21, 2026, 7:32 PM EDT
Completed Not applicable Interventional

Application of High Power Radio Frequency Energy in the Ventricular Tachycardia Treatment

NCT04657705
View directory record Official record
Conditions
Ventricular Tachycardia, Heart Diseases
Interventions
High power ablation, Standard ablation power
Procedure
Lead sponsor
Federal Research Clinical Center of Federal Medical & Biological Agency, Russia
Government
Eligibility
18 Years and older
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jan 29, 2023 · Synced Jul 21, 2026, 7:32 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 30, 2017 · Synced Jul 21, 2026, 7:32 PM EDT
Completed Not applicable Interventional

Mapping and Pacing of the His Bundle for Heart Failure Patients With Left Bundle Branch Block

NCT03803995
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Oct 1, 2025 · Synced Jul 21, 2026, 7:32 PM EDT
Terminated Not applicable Interventional Results available

Early Elimination of Premature Ventricular Contractions in Heart Failure

NCT01757067
View directory record Official record
Conditions
Premature Ventricular Contractions, Congestive Heart Failure
Interventions
PVC ablation
Device
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
7
States / cities
Los Angeles, California • Baltimore, Maryland • Boston, Massachusetts + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2021 · Synced Jul 21, 2026, 7:32 PM EDT
Recruiting Not applicable Interventional

Safety and Performance Assessment of the Sphere-9™ Catheter and Affera™ Ablation System for the Treatment of Ventricular Tachycardia (Sphere-9 VT EFS)

NCT06703489
View directory record Official record
Conditions
Ventricular Tachycardia (VT)
Interventions
Sphere-9 Catheter with the Affera Mapping and Ablation System
Device
Lead sponsor
Medtronic Cardiac Ablation Solutions
Industry
Eligibility
18 Years to 85 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
6
States / cities
Boston, Massachusetts • New York, New York • Cleveland, Ohio + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Jul 21, 2026, 7:32 PM EDT
Completed No phase listed Observational

Genetic Substudy of the Alternans Before Cardioverter Defibrillator (ABCD) Trial

NCT00583297
View directory record Official record
Conditions
Ventricular Tachycardia, Cardiovascular Diseases, Arrythmia, CVD
Interventions
Not listed
Lead sponsor
CardioDx
Industry
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 21, 2018 · Synced Jul 21, 2026, 7:32 PM EDT
Completed No phase listed Observational

Effects Rapid Atrial Pacing Has on the Electrocardiogram (ECG) in Patients With Dual Chamber Pacemakers

NCT00883610
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Dec 10, 2014 · Synced Jul 21, 2026, 7:32 PM EDT
Completed Phase 4 Interventional Results available

The Use of Dual Chamber ICD With Special Programmed Features to Lower the Risk of Inappropriate Shock

NCT00787800
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Atrial Fibrillation, Supraventricular Tachycardia
Interventions
Dual Chamber ICD, Single Chamber ICD
Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
2
States / cities
Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 23, 2014 · Synced Jul 21, 2026, 7:32 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 4, 2024 · Synced Jul 21, 2026, 7:32 PM EDT
Completed Phase 3 Interventional

Concomitant Treatment of Permanent Atrial Fibrillation

NCT00566787
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Surgical bipolar radiofrequency ablation using the AtriCure Bipolar System
Device
Lead sponsor
AtriCure, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
10
States / cities
Indianapolis, Indiana • Ann Arbor, Michigan • Grand Rapids, Michigan + 7 more
Source: ClinicalTrials.gov public record
Updated Jan 24, 2012 · Synced Jul 21, 2026, 7:32 PM EDT