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ClinicalTrials.gov public records Last synced Oct 30, 2026, 5:26 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 337–360 of 370 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Conduction Defects Clear all
Terminated Phase 3 Interventional Results available

Effect of Sodium Zirconium Cyclosilicate on Arrythmia-related Cardiovascular Outcomes in Participants on Chronic Hemodialysis With Recurrent Hyperkalemia (DIALIZE-Outcomes)

NCT04847232
View directory record Official record
Conditions
Hyperkalemia
Interventions
Sodium Zirconium Cyclosilicate (SZC), SZC Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years
Enrollment
2,690 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
57
States / cities
Huntsville, Alabama • Mesa, Arizona • Bakersfield, California + 47 more
Source: ClinicalTrials.gov public record
Updated Jun 18, 2025 · Synced Oct 30, 2026, 5:26 AM EDT
Recruiting Not applicable Interventional

Cryoablation for Monomorphic Ventricular Tachycardia (VTS)

NCT07650032
View directory record Official record
Conditions
Ventricular Tachycardia, Sustained, Ventricular Tachycardia, Monomorphic
Interventions
Ultra Low Temperature Ablation (ULTA)
Device
Lead sponsor
Adagio Medical
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
8
States / cities
Phoenix, Arizona • Long Beach, California • Boston, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 30, 2026, 5:26 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 30, 2026, 5:26 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Pharmacokinetics of Eleclazine in Adults With Normal and Impaired Hepatic Function

NCT02412098
View directory record Official record
Conditions
Long QT Syndrome
Interventions
Eleclazine
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 65 Years
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
4
States / cities
Miami, Florida • Orlando, Florida • Minneapolis, Minnesota + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2019 · Synced Oct 30, 2026, 5:26 AM EDT
Completed Phase 1 Interventional

Analysis of Adenosine on Sinus and Atrioventricular Nodal Conduction in the Pediatric Transplanted Heart

NCT02462941
View directory record Official record
Conditions
Sinus Bradycardia, Atrioventricular Block
Interventions
Adenosine, Cardiac catheterization
Drug · Procedure
Lead sponsor
Columbia University
Other
Eligibility
6 Months to 25 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 8, 2018 · Synced Oct 30, 2026, 5:26 AM EDT
Recruiting Not applicable Interventional

Cardiac RADIoablation Versus Repeat Catheter Ablation: a Pivotal Randomized Clinical Trial Evaluating Safety and Efficacy for Patients With High-risk Refractory Ventricular Tachycardia (RADIATE-VT)

NCT05765175
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced Oct 30, 2026, 5:26 AM EDT
Completed No phase listed Observational

Brain Perfusion and Hemodynamic Stability in Patients Undergoing Radiofrequency Ablation of Ventricular Tachycardia

NCT01695551
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Data Collection Forms
Other
Lead sponsor
Dhanunjaya Lakkireddy, MD, FACC
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jan 9, 2017 · Synced Oct 30, 2026, 5:26 AM EDT
Completed Not applicable Interventional Results available

Flecainide for Catecholaminergic Polymorphic Ventricular Tachycardia

NCT01117454
View directory record Official record
Conditions
Catecholaminergic Polymorphic Ventricular Tachycardia
Interventions
Flecainide Acetate, Placebo, Beta blocker
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
5 Years to 99 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
10
States / cities
Los Angeles, California • Orange, California • New York, New York + 7 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2017 · Synced Oct 30, 2026, 5:26 AM EDT
Completed Not applicable Interventional

BIOTRONIK Conduction System Pacing With the Solia Lead - Solia CSP S

NCT06540079
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Oct 30, 2026, 5:26 AM EDT
Terminated Not applicable Interventional Results available

MIRACLE EF Clinical Study

NCT01735916
View directory record Official record
Conditions
Congestive Heart Failure, Left Bundle Branch Block, Systolic Heart Failure
Interventions
CRT-P Implant, CRT-P OFF
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
69
States / cities
Concord, California • La Jolla, California • Los Angeles, California + 62 more
Source: ClinicalTrials.gov public record
Updated Nov 6, 2017 · Synced Oct 30, 2026, 5:26 AM EDT
Completed No phase listed Observational

Vektor vMap™ Clinical Validation Study

NCT04559061
View directory record Official record
Conditions
Cardiac Arrhythmia, Atrial Fibrillation, Ventricular Arrythmia, Premature Ventricular Complexes Multiple, Ventricular Tachycardia, Ventricular Fibrillation, Premature Atrial Complex, Atrioventricular Reentrant Tachycardia
Interventions
Cardiac ablation procedure
Device
Lead sponsor
Vektor Medical
Industry
Eligibility
22 Years to 100 Years
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
4
States / cities
Charleston, California • La Jolla, California • San Diego, California + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 8, 2021 · Synced Oct 30, 2026, 5:26 AM 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 30, 2026, 5:26 AM EDT
Completed Phase 2Phase 3 Interventional

Safety and Effectiveness of Cardiac Resynchronization Therapy With Defibrillation

NCT00387803
View directory record Official record
Conditions
Heart Failure, Congestive, Ventricular Fibrillation, Tachycardia, Ventricular
Interventions
Cardiac Resynchronization Therapy with Defibrillation
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
Not listed
Enrollment
581 participants
Timeline
1998 – 2001
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 25, 2007 · Synced Oct 30, 2026, 5:26 AM EDT
Not listed Not applicable Interventional

Right Ventricular Defibrillation Lead Select Site Study

NCT00385749
View directory record Official record
Conditions
Heart Failure, Congestive, Tachycardia, Ventricular
Interventions
RV apical vs RV septal defibrillation threshold testing
Device
Lead sponsor
Associates in Cardiology, PA
Other
Eligibility
21 Years and older
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 1, 2007 · Synced Oct 30, 2026, 5:26 AM EDT
Completed Phase 4 Interventional Results available

Effect of Nebulized Bronchodilators on Heart Rate

NCT01151579
View directory record Official record
Conditions
COPD, Sepsis, Shock
Interventions
Levalbuterol, Albuterol
Drug
Lead sponsor
Fahim Khorfan, MD
Industry
Eligibility
18 Years and older
Enrollment
89 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Grand Blanc, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 23, 2015 · Synced Oct 30, 2026, 5:26 AM EDT
Completed Phase 3 Interventional Results available

Multicenter Study of Antiarrhythmic Medications for Treatment of Infants With Supraventricular Tachycardia

NCT00390546
View directory record Official record
Conditions
Supraventricular Tachycardia
Interventions
Digoxin, Propranolol
Drug
Lead sponsor
University of British Columbia
Other
Eligibility
Up to 4 Months
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
10
States / cities
Los Angeles, California • Orange, California • Kansas City, Missouri + 7 more
Source: ClinicalTrials.gov public record
Updated Dec 13, 2017 · Synced Oct 30, 2026, 5:26 AM EDT
Completed Not applicable Interventional Results available

Atropine in Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT)

NCT02927223
View directory record Official record
Conditions
Catecholaminergic Polymorphic Ventricular Tachycardia
Interventions
Atropine, Exercise treadmill test
Drug · Procedure
Lead sponsor
Vanderbilt University
Other
Eligibility
6 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 28, 2020 · Synced Oct 30, 2026, 5:26 AM EDT
Not listed Phase 4 Interventional

Study to Reduce Symptoms of Premature Beats With Ranolazine

NCT01996618
View directory record Official record
Conditions
Premature Ventricular Beats
Interventions
Ranolazine
Drug
Lead sponsor
Walter Reed National Military Medical Center
Federal
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 1, 2015 · Synced Oct 30, 2026, 5:26 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 30, 2026, 5:26 AM EDT
Completed Phase 4 Interventional Results available

Safety of Sugammadex for the Reversal of Neuromuscular Blockade in American Society of Anesthesiologists (ASA) Class 3 or 4 Participants (MK-8616-145)

NCT03346057
View directory record Official record
Conditions
Reversal of Neuromuscular Blockade
Interventions
Sugammadex 2 mg/kg, Sugammadex 4 mg/kg, Sugammadex 16 mg/kg, Neostigmine + Glycopyrrolate, Rocuronium, Vecuronium
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
344 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
20
States / cities
Birmingham, Alabama • Tucson, Arizona • Loma Linda, California + 15 more
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Oct 30, 2026, 5:26 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 30, 2026, 5:26 AM EDT
Completed Not applicable Interventional Results available

Biventricular Versus Right Ventricular Pacing in Heart Failure Patients With Atrioventricular Block (BLOCK HF)

NCT00267098
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Mar 26, 2014 · Synced Oct 30, 2026, 5:26 AM EDT
Recruiting Phase 4 Interventional

Adenosine vs Diltiazem for Treatment of SVT in the ED

NCT06993038
View directory record Official record
Conditions
Supraventricular Tachycardia (SVT)
Interventions
adenosine, diltiazem
Drug
Lead sponsor
Anne E. Zepeski
Other
Eligibility
18 Years to 100 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Oct 30, 2026, 5:26 AM EDT