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ClinicalTrials.gov public records Last synced Sep 13, 2026, 4:08 AM EDT

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Showing 1–24 of 1,040 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Fibrillation, Atrial Clear all
Recruiting No phase listed Observational

Observational Study of Cardiac Arrhythmias During Treatment With BTK Inhibitors or Venetoclax

NCT05724121
View directory record Official record
Conditions
Chronic Lymphocytic Leukemia (CLL), Waldenstr(SqrRoot)(Delta)m s Macroglobulinemia, Mantle Cell Lymphoma, Sudden Cardiac Death, Cardiac Arrhythmias, Hematologic Malignancies
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 110 Years
Enrollment
135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Sep 13, 2026, 4:08 AM EDT
Completed Not applicable Interventional Results available

The HOLIDAY (HOw ALcohol InDuces Atrial TachYarrhythmias) Study

NCT01996943
View directory record Official record
Conditions
Atrial Fibrillation, Alcohol
Interventions
Ethanol, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 81 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2020
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 15, 2021 · Synced Sep 13, 2026, 4:08 AM EDT
Enrolling by invitation No phase listed Observational

Subspecialty Ambulatory Quality Cardiology Program

NCT07283666
View directory record Official record
Conditions
Heart Failure With Reduced Ejection Fraction, Atrial Fibrillation
Interventions
Not listed
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 90 Years
Enrollment
7,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Sep 13, 2026, 4:08 AM EDT
Completed Phase 1 Interventional

RF Ablation of Atrial Fibrillation

NCT00265629
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
RF catheter ablation
Device
Lead sponsor
C. R. Bard
Industry
Eligibility
18 Years to 85 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 18, 2013 · Synced Sep 13, 2026, 4:08 AM EDT
Completed Not applicable Interventional Results available

Transcutaneous Electrical Vagus Nerve Stimulation to Suppress Atrial Fibrillation

NCT02548754
View directory record Official record
Conditions
Atrial Fibrillation, Inflammation
Interventions
Parasym device
Device
Lead sponsor
University of Oklahoma
Other
Eligibility
21 Years to 90 Years
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Feb 15, 2022 · Synced Sep 13, 2026, 4:08 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Study to Investigate if Early Atrial Fibrillation (AF) Diagnosis Reduces Risk of Events Like Stroke in the Real-World

NCT04276441
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Heart healthy Engagement Program with the Apple Watch Series 5 or later, Anti-Coagulation Adherence Module with the Apple Watch Series 5 or later
Device
Lead sponsor
Janssen Scientific Affairs, LLC
Industry
Eligibility
65 Years and older
Enrollment
34,244 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
San Mateo, California
Source: ClinicalTrials.gov public record
Updated Jul 17, 2025 · Synced Sep 13, 2026, 4:08 AM EDT
Completed Not applicable Interventional Results available

Intravenous Magnesium Infusion in Patients Undergoing Cardioversion of Atrial Fibrillation Trial

NCT01597557
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Magnesium Sulfate, Placebo
Drug · Other
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
18 Years and older
Enrollment
261 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Oct 21, 2020 · Synced Sep 13, 2026, 4:08 AM EDT
Terminated Phase 2 Interventional Results available

Metformin as an Upstream Therapy in Atrial Fibrillation

NCT02931253
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Metformin
Drug
Lead sponsor
The Guthrie Clinic
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Sayre, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 24, 2024 · Synced Sep 13, 2026, 4:08 AM EDT
Completed No phase listed Observational

The Atrial High Rate Episodes in Pacemaker Patients

NCT00627328
View directory record Official record
Conditions
Arrhythmia, Atrial Fibrillation, Atrioventricular Block, Bradycardia, Sick Sinus Syndrome
Interventions
Not listed
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
50 Years and older
Enrollment
427 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2004
U.S. locations
37
States / cities
Hot Springs, Arkansas • Little Rock, Arkansas • Fresno, California + 34 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2008 · Synced Sep 13, 2026, 4:08 AM EDT
Recruiting Not applicable Interventional

A Study of VARIPULSE Catheter in Participants With Persistent Atrial Fibrillation Undergoing Pulmonary Vein and Superior Vena Cava Isolation

NCT07527299
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
VARIPULSE Catheter System, LAAO Device
Device
Lead sponsor
Biosense Webster, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
1,070 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
3
States / cities
Tucson, Arizona • Jonesboro, Arkansas • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 13, 2026, 4:08 AM EDT
Not listed No phase listed Observational

Dielectric Tissue Imaging in Cavotricuspid Isthmus Ablation

NCT04438395
View directory record Official record
Conditions
Atrial Fibrillation and Flutter
Interventions
Cardiac ablation via catheter
Device
Lead sponsor
EPD Solutions, A Philips Company
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 5, 2022 · Synced Sep 13, 2026, 4:08 AM EDT
Suspended Not applicable Interventional

The CONFORM Pivotal Trial

NCT05147792
View directory record Official record
Conditions
Atrial Fibrillation, Stroke
Interventions
CLAAS, WATCHMAN left atrial appendage closure device / Amulet left atrial appendage occluder
Device
Lead sponsor
Conformal Medical, Inc
Industry
Eligibility
18 Years and older
Enrollment
1,600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2031
U.S. locations
78
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 66 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 13, 2026, 4:08 AM EDT
Active, not recruiting Phase 4 Interventional

Therapeutic Initial Heparin Dosing for Patients With Clots or Certain Heart Conditions Admitted to the Hospital

NCT07250763
View directory record Official record
Conditions
Pulmonary Embolism, Deep Vein Thrombosis, Atrial Fibrillation, Acute Cardiac Syndrome, Mechanical Heart Valve Recipients
Interventions
Initial Heparin Dose Modification
Drug
Lead sponsor
Inova Health Care Services
Other
Eligibility
18 Years and older
Enrollment
145 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Alexandria, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 25, 2025 · Synced Sep 13, 2026, 4:08 AM EDT
Recruiting No phase listed Observational

The Long-term Safety and Effectiveness Evaluation of the QDOT MICRO System Use in Conjunction With VISITAG SURPOINT Module for the Treatment of Symptomatic Drug Refractory Paroxysmal Atrial Fibrillation.

NCT06324201
View directory record Official record
Conditions
Paroxysmal Atrial Fibrillation
Interventions
Ablation Procedure
Device
Lead sponsor
Heart Rhythm Clinical and Research Solutions, LLC
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
21
States / cities
Birmingham, Alabama • Mobile, Alabama • Ventura, California + 17 more
Source: ClinicalTrials.gov public record
Updated Oct 30, 2025 · Synced Sep 13, 2026, 4:08 AM EDT
Completed No phase listed Observational

Siemens 3-D C-Arm CT of the Heart Chambers

NCT00619450
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
3D C-arm CT scan
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 31, 2017 · Synced Sep 13, 2026, 4:08 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Effective Conversion of Individuals at Risk

NCT05112757
View directory record Official record
Conditions
Obstructive Sleep Apnea, Atrial Fibrillation
Interventions
Smartphone application use
Other
Lead sponsor
Philips Electronics Nederland B.V. acting through Philips CTO organization
Industry
Eligibility
18 Years and older
Enrollment
77 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Sioux Falls, South Dakota
Source: ClinicalTrials.gov public record
Updated Dec 11, 2022 · Synced Sep 13, 2026, 4:08 AM EDT
Completed No phase listed Observational

Echocardiographic Risk Factors of Stroke in Patients With Atrial Fibrillation

NCT03824509
View directory record Official record
Conditions
Atrial Fibrillation, Stroke
Interventions
Chart Review
Other
Lead sponsor
MaineHealth
Other
Eligibility
Not listed
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Rockport, Maine
Source: ClinicalTrials.gov public record
Updated Jul 15, 2021 · Synced Sep 13, 2026, 4:08 AM EDT
Completed No phase listed Observational

Comparison of Continuous Sternal ECG Patch Monitors (Carnation and Zio) Trial

NCT02952781
View directory record Official record
Conditions
Syncope, Presyncope, Atrial Fibrillation, Supraventricular Tachycardia
Interventions
EKG Patch monitors (Zio and Carnation)
Device
Lead sponsor
EvergreenHealth
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Kirkland, Washington
Source: ClinicalTrials.gov public record
Updated Mar 6, 2017 · Synced Sep 13, 2026, 4:08 AM EDT
Active, not recruiting Not applicable Interventional

Amplatzer Amulet LAAO vs. NOAC

NCT04226547
View directory record Official record
Conditions
Atrial Fibrillation, Stroke, Bleeding
Interventions
Left Atrial Appendage Occlusion (Amplatzer Amulet LAA Occluder), Non-Vitamin K Oral Antagonists
Device · Drug
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
2,650 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2031
U.S. locations
79
States / cities
Birmingham, Alabama • Huntsville, Alabama • Phoenix, Arizona + 65 more
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Sep 13, 2026, 4:08 AM EDT
Recruiting Not applicable Interventional

Digitally Rendered Interventions And Knowledge To Limit Ethanol-Associated Atrial Fibrillation Severity

NCT06995391
View directory record Official record
Conditions
Atrial Fibrillation (AF)
Interventions
Contemporary Guideline-Adherence, Alcohol Abstinence
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 30, 2025 · Synced Sep 13, 2026, 4:08 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 7, 2021 · Synced Sep 13, 2026, 4:08 AM EDT
Terminated Phase 1 Interventional Results available

High Dose Vitamin C in Cardiac Surgery Patients

NCT02762331
View directory record Official record
Conditions
Disorder of Vitamin C, Atrial Fibrillation, Complications Due to Coronary Artery Bypass Graft, Heart Valve Disease
Interventions
Ascorbic Acid, Placebo
Drug
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 70 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 23, 2019 · Synced Sep 13, 2026, 4:08 AM EDT
Completed Not applicable Interventional

Acupuncture Treatment for Patients Who Develop Arrhythmias in the Post-Operative Cardio-Thoracic Setting

NCT03525860
View directory record Official record
Conditions
Post-Operative Atrial Fibrillation, Acupuncture Therapy
Interventions
Acupuncture
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 11, 2021 · Synced Sep 13, 2026, 4:08 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Development of CIRC Technologies

NCT05654272
View directory record Official record
Conditions
Cardiovascular Diseases, Heart Failure, Ischemic Heart Disease, Non-ischemic Cardiomyopathy, Valvular Heart Disease, Metabolic Cardiomyopathy, Congenital Heart Disease, Aortic Diseases, Atrial Fibrillation, Ventricular Fibrillation
Interventions
MRI
Diagnostic Test
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2042
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Sep 13, 2026, 4:08 AM EDT