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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Irregular Heart Beat Clear all
Completed No phase listed Observational

Signs and Symptoms Associated With Molecular Defects in Genetically Inherited Heart Disease

NCT00027196
View directory record Official record
Conditions
Congenital Heart Defect
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Enrollment
9,999,999 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 24, 2026, 5:00 PM EDT
Completed Not applicable Interventional

Low-Level EMF Stimulation for Paroxysmal Atrial Fibrillation

NCT03593486
View directory record Official record
Conditions
Atrial Fibrillation, Catheter Ablation, Autonomic Imbalance
Interventions
Low-level Pulsed EMF, Sham Stimulation
Device
Lead sponsor
University of Oklahoma
Other
Eligibility
21 Years to 85 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Dec 19, 2019 · Synced Jul 24, 2026, 5:00 PM EDT
Terminated No phase listed Observational Results available

Assessment of the Utility of BIOMONITOR to Identify Atrial Fibrillation (AF) in Ablation Candidates Using Precise AF Detection

NCT04076917
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Not listed
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
5
States / cities
Kissimmee, Florida • Winter Park, Florida • St Louis, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 4, 2022 · Synced Jul 24, 2026, 5:00 PM EDT
Not yet recruiting No phase listed Observational

Assessing the Neurological Outcomes After Atrial Fibrillation Ablation for Rhythm Control

NCT06783868
View directory record Official record
Conditions
Atrial Fibrillation, Stroke
Interventions
Catheter Ablation, Market-approved AVNB, OAC and AAD
Device · Drug
Lead sponsor
Kansas City Heart Rhythm Research Foundation
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
7
States / cities
Overland Park, Kansas • Independence, Missouri • Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 27, 2025 · Synced Jul 24, 2026, 5:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The MARY-JANE Cannabis and Heart Rhythm Trial

NCT06021613
View directory record Official record
Conditions
Premature Atrial Contractions, Premature Ventricular Contractions
Interventions
Randomized instructions
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years and older
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Jul 24, 2026, 5:00 PM EDT
Active, not recruiting Not applicable Interventional

Electrocardiogram-based Artificial Intelligence-assisted Detection of Heart Disease

NCT05442203
View directory record Official record
Conditions
Atrial Fibrillation, Structural Heart Disease
Interventions
Zio Patch Monitor, Echocardiogram
Device
Lead sponsor
Tempus AI
Industry
Eligibility
40 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
3
States / cities
Grand Rapids, Michigan • Cincinnati, Ohio • Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 24, 2024 · Synced Jul 24, 2026, 5:00 PM EDT
Not listed No phase listed Observational

Impact of Life-Style Modification On Ablation Outcome in Atrial Fibrillation

NCT02219841
View directory record Official record
Conditions
Atrial Fibrillation, Obesity
Interventions
radiofrequency catheter ablation
Procedure
Lead sponsor
Texas Cardiac Arrhythmia Research Foundation
Other
Eligibility
18 Years to 80 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2022
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 10, 2019 · Synced Jul 24, 2026, 5:00 PM EDT
Completed Not applicable Interventional Results available

Randomized Trial of Interventions to Improve Warfarin Adherence

NCT00904982
View directory record Official record
Conditions
Atrial Fibrillation, Deep Vein Thrombosis, Dilated Cardiomyopathies
Interventions
Financial Incentive and Med-eMonitor, 2Med-eMonitor
Behavioral · Device
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
268 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
2
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 15, 2017 · Synced Jul 24, 2026, 5:00 PM 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 13, 2017 · Synced Jul 24, 2026, 5:00 PM EDT
Completed Not applicable Interventional

Determination of Catheter Contact by Evaluation of Microelectrode Near-Field Signals

NCT02080975
View directory record Official record
Conditions
Cardiac Catheter Ablation, Atrial Flutter, Cardiac Arrhythmias
Interventions
Data Collection During Atrial Flutter Ablation
Other
Lead sponsor
David B. De Lurgio
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 21, 2016 · Synced Jul 24, 2026, 5:00 PM EDT
Withdrawn Phase 4 Interventional

Study to Evaluate the Effectiveness of SGB in Preventing Post-op Atrial Fibrillation

NCT03269383
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Bupivacaine, Saline
Drug · Other
Lead sponsor
Christopher Connors, MD
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Portland, Maine
Source: ClinicalTrials.gov public record
Updated Apr 23, 2019 · Synced Jul 24, 2026, 5:00 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Stroke Feasibility Study

NCT01997905
View directory record Official record
Conditions
Atrial Fibrillation, AFib
Interventions
AtriClip LAA Exclusion Device
Device
Lead sponsor
AtriCure, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
7
States / cities
St. Helena, California • Miami, Florida • Indianapolis, Indiana + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 13, 2016 · Synced Jul 24, 2026, 5:00 PM EDT
Completed Not applicable Interventional

Cardiac Rehab Post-atrial Fib Ablation

NCT05450731
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
12-week supervised exercise based cardiac rehabilitation program
Other
Lead sponsor
MultiCare Health System Research Institute
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Feb 19, 2024 · Synced Jul 24, 2026, 5:00 PM EDT
Recruiting Phase 4 Interventional

Ondansetron for the Management of Atrial Fibrillation

NCT05844501
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Ondansetron 8mg, Placebo
Drug
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 100 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
3
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 3, 2026 · Synced Jul 24, 2026, 5:00 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 8, 2026 · Synced Jul 24, 2026, 5:00 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 23, 2026 · Synced Jul 24, 2026, 5:00 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 18, 2018 · Synced Jul 24, 2026, 5:00 PM EDT
Not listed Not applicable Interventional

Pulmonary Vein Antrum Isolation (PVAI) Plus Scar Homogenization and Non-PV Triggers Ensure Long-term Recurrence-free Survival in Non-paroxysmal Atrial Fibrillation

NCT01672138
View directory record Official record
Conditions
Persistent Atrial Fibrillation, Long-standing Persistent Atrial Fibrillation
Interventions
Pulmonary Vein Antrum Isolation, scar homogenization, Non-PV triggers ablation
Procedure
Lead sponsor
Texas Cardiac Arrhythmia Research Foundation
Other
Eligibility
18 Years to 80 Years
Enrollment
186 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2020
U.S. locations
2
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Nov 15, 2018 · Synced Jul 24, 2026, 5:00 PM EDT
Terminated Not applicable Interventional Results available

Feasibility Study to Improve AF Outcomes Using a Digital Application for CV Risk Reduction

NCT04050982
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
AF CARE, Usual Care
Device · Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Sep 21, 2023 · Synced Jul 24, 2026, 5:00 PM EDT
Completed Not applicable Interventional

Withings ECG-app Study

NCT05316350
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Electrocardiogram recording
Device
Lead sponsor
Withings
Industry
Eligibility
22 Years and older
Enrollment
685 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
9
States / cities
Boca Raton, Florida • Hialeah, Florida • Miami, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Mar 19, 2024 · Synced Jul 24, 2026, 5:00 PM EDT
Completed No phase listed Observational Results available

LBBAP Data Collection Registry

NCT05887323
View directory record Official record
Conditions
Bradycardia, Sinus Node Dysfunction, Heart Block, Syncope, Cardiomyopathies, Heart Failure
Interventions
Implantation of the Tendril 2088 lead in the LBBA
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
221 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
5
States / cities
Jonesboro, Arkansas • Rancho Mirage, California • Pensacola, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 7, 2024 · Synced Jul 24, 2026, 5:00 PM EDT
Recruiting No phase listed Observational

PERceptions of Diltiazem Versus ADEnosine for Treatment of Supraventricular Tachycardia in the Emergency Department

NCT07086560
View directory record Official record
Conditions
Supraventricular Tachycardia (SVT)
Interventions
IV adenosine, IV diltiazem
Drug
Lead sponsor
University of Iowa
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 27, 2026 · Synced Jul 24, 2026, 5:00 PM EDT
Active, not recruiting No phase listed Observational

BAsel Syncope EvaLuation (BASEL IX) Study

NCT01548352
View directory record Official record
Conditions
Syncope
Interventions
Not listed
Lead sponsor
University Hospital, Basel, Switzerland
Other
Eligibility
40 Years and older
Enrollment
3,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 14, 2025 · Synced Jul 24, 2026, 5:00 PM EDT
Not yet recruiting Phase 2 Interventional

A Study to Test How Well BAY 3670549 Works and How Safe it is in Patients With Atrial Fibrillation

NCT07625215
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
BAY 3670549, Placebo
Drug · Other
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 85 Years
Enrollment
360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
6
States / cities
San Francisco, California • Aurora, Colorado • Boston, Massachusetts + 3 more
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Jul 24, 2026, 5:00 PM EDT