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Showing 1–24 of 97 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Atrial Flutter Clear all
Completed Phase 2 Interventional Results available

Genetically Targeted Therapy for the Prevention of Symptomatic Atrial Fibrillation in Patients With Heart Failure

NCT01970501
View directory record Official record
Conditions
Current or Recent History of Atrial Fibrillation
Interventions
bucindolol hydrochloride, metoprolol succinate, Placebo oral capsule
Drug · Other
Lead sponsor
ARCA Biopharma, Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
267 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
48
States / cities
Anchorage, Alaska • Phoenix, Arizona • East Palo Alto, California + 43 more
Source: ClinicalTrials.gov public record
Updated Sep 25, 2022 · Synced Sep 5, 2026, 4:16 AM EDT
Completed Phase 3 Interventional

Ablation of Perimitral Flutter Following Catheter Ablation of Atrial Fibrillation: Impact on Outcomes

NCT01173796
View directory record Official record
Conditions
Atrial Fibrillation, Perimitral Flutter
Interventions
catheter ablation
Procedure
Lead sponsor
Texas Cardiac Arrhythmia Research Foundation
Other
Eligibility
18 Years to 75 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 10, 2012 · Synced Sep 5, 2026, 4:16 AM EDT
Completed Phase 3 Interventional

Intravenous Tedisamil in the Rapid Conversion of Atrial Fibrillation or Flutter to Normal Sinus Rhythm in Female Subjects

NCT00126022
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Flutter
Interventions
Tedisamil sesquifumarate
Drug
Lead sponsor
Solvay Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Tullahoma, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 15, 2015 · Synced Sep 5, 2026, 4:16 AM EDT
Completed Phase 2Phase 3 Interventional

Placebo Controlled Double-blind Dose Ranging Study of the Efficacy and Safety of SSR149744C 50, 100, 200 or 300 mg OD With Amiodarone as Calibrator for the Maintenance of Sinus Rhythm in Patients With Recent Atrial Fibrillation/Flutter

NCT00233441
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Flutter
Interventions
CELIVARONE (SSR149744C)
Drug
Lead sponsor
Sanofi
Industry
Eligibility
21 Years and older
Enrollment
673 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated May 7, 2012 · Synced Sep 5, 2026, 4:16 AM EDT
Terminated Not applicable Interventional

Gen2 Isthmus-Dependent Atrial Flutter Ablation Study

NCT00606463
View directory record Official record
Conditions
Atrial Flutter
Interventions
Cardiac Ablation (Gen2 Cardiac Ablation System)
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
3
States / cities
Birmingham, Alabama • West Orange, New Jersey • Doylestown, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 13, 2023 · Synced Sep 5, 2026, 4:16 AM EDT
Recruiting Not applicable Interventional

Atrial Flutter Ablation in the iCMR

NCT05904548
View directory record Official record
Conditions
Atrial Flutter Typical
Interventions
RF Ablation
Device
Lead sponsor
Imricor Medical Systems
Industry
Eligibility
18 Years and older
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
3
States / cities
Baltimore, Maryland • Charlottesville, Virginia • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 5, 2026, 4:16 AM EDT
Completed Phase 3 Interventional

Clarification of Optimal Anticoagulation Through Genetics

NCT00839657
View directory record Official record
Conditions
Stroke, Venous Thrombosis, Atrial Fibrillation, Atrial Flutter
Interventions
Genotype-guided dosing algorithm for warfarin, Clinical-guided dosing algorithm for warfarin
Behavioral
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
1,015 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
18
States / cities
Birmingham, Alabama • San Francisco, California • Gainesville, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Apr 19, 2016 · Synced Sep 5, 2026, 4:16 AM EDT
Completed Phase 3 Interventional

Study to Determine the Response and Effectiveness of RSD1235 in Subjects With Atrial Fibrillation or Atrial Flutter

NCT00115791
View directory record Official record
Conditions
Atrial Flutter, Atrial Fibrillation
Interventions
RSD1235, placebo
Drug
Lead sponsor
Astellas Pharma Inc
Industry
Eligibility
18 Years and older
Enrollment
276 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
19
States / cities
Birmingham, Alabama • Huntsville, Alabama • Gainesville, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Mar 31, 2008 · Synced Sep 5, 2026, 4:16 AM EDT
Enrolling by invitation Not applicable Interventional

Storytelling for Reducing Gap in Anticoagulation Use in African Americans With Atrial Fibrillation

NCT05997914
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Flutter, Adherence, Medication, Anticoagulants and Bleeding Disorders, Stroke, Bleeding, Narration
Interventions
Storytelling Intervention
Behavioral
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
4
States / cities
Jacksonville, Florida • Worcester, Massachusetts • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 5, 2026, 4:16 AM EDT
Recruiting Not applicable Interventional

Left Atrial Imaging Prior to Cardioversion: Leveraging Computed Tomography to Rule Out Thrombus in The Emergency Department (LA CLOTTED)

NCT07002450
View directory record Official record
Conditions
Atrial Fibrillation (AF), Atrial Flutter
Interventions
Cardiac computed tomography angiography, Standard of care management
Diagnostic Test · Other
Lead sponsor
Ottawa Heart Institute Research Corporation
Other
Eligibility
18 Years and older
Enrollment
190 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 5, 2026, 4:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluation of the Use of Apple Watch Features for Identification of Cardiac Arrhythmias

NCT03769207
View directory record Official record
Conditions
Atrial Fibrillation, Arrhythmias, Cardiac, Atrial Flutter
Interventions
Ambulatory ECG
Device
Lead sponsor
Apple Inc.
Industry
Eligibility
22 Years and older
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Oct 19, 2020 · Synced Sep 5, 2026, 4:16 AM EDT
Recruiting Not applicable Interventional

Pericardiotomy in Cardiac Surgery

NCT06486636
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Flutter, Cardiac Events
Interventions
Left Posterior Pericardiotomy
Procedure
Lead sponsor
Population Health Research Institute
Other
Eligibility
18 Years and older
Enrollment
1,400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2031
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 13, 2025 · Synced Sep 5, 2026, 4:16 AM EDT
Completed Phase 3 Interventional Results available

Atrial Flutter Ablation With Contact Therapy Cool Path Ablation System Along With EnSite Velocity Contact System

NCT01401361
View directory record Official record
Conditions
Typical Atrial Flutter
Interventions
Treatment Arm
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
19
States / cities
Birmingham, Alabama • Denver, Colorado • Hartford, Connecticut + 15 more
Source: ClinicalTrials.gov public record
Updated Feb 14, 2019 · Synced Sep 5, 2026, 4:16 AM EDT
Completed No phase listed Observational Results available

FREEZE-AFIB Post-Market Study

NCT05089877
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Flutter
Interventions
Surgical Ablation
Device
Lead sponsor
AtriCure, Inc.
Industry
Eligibility
18 Years to 99 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
6
States / cities
Hartford, Connecticut • New Haven, Connecticut • Evanston, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 12, 2025 · Synced Sep 5, 2026, 4:16 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 9, 2020 · Synced Sep 5, 2026, 4:16 AM EDT
Completed Not applicable Interventional Results available

Clinical Evaluation of the Blazer® Open-Irrigated Catheter for Treatment of Type 1 Atrial Flutter

NCT01253200
View directory record Official record
Conditions
Atrial Flutter
Interventions
Blazer® Open-Irrigated Ablation Catheter, Control Catheter
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
302 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
26
States / cities
Birmingham, Alabama • Fullerton, California • Sacramento, California + 21 more
Source: ClinicalTrials.gov public record
Updated Mar 18, 2018 · Synced Sep 5, 2026, 4:16 AM 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 Sep 5, 2026, 4:16 AM EDT
Completed Phase 3 Interventional Results available

A Trial With Dronedarone to Prevent Hospitalization or Death in Patients With Atrial Fibrillation

NCT00174785
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Flutter
Interventions
dronedarone (SR33589), placebo
Drug
Lead sponsor
Sanofi
Industry
Eligibility
70 Years and older
Enrollment
4,628 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 11, 2010 · Synced Sep 5, 2026, 4:16 AM EDT
Completed Phase 2 Interventional Results available

A Dose-range Finding Study of MAA868 in Patients With Atrial Fibrillation

NCT04213807
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
MAA868 Cohort 1, MAA868 Cohort 2, MAA868 Cohort 3, Placebo
Biological · Other
Lead sponsor
Anthos Therapeutics, Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
6
States / cities
Beverly Hills, California • Wichita, Kansas • Alexandria, Louisiana + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 10, 2022 · Synced Sep 5, 2026, 4:16 AM EDT
Recruiting Phase 3 Interventional

Comparing Magnesium 2g Versus 4g Versus Placebo in the Incidence of Treating AFF RVR

NCT06376916
View directory record Official record
Conditions
Tachycardia Atrial, Atrial Fibrillation, Atrial Flutter With Rapid Ventricular Response
Interventions
Magnesium Sulfate 2 G, Magnesium Sulfate 4 G, Saline
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Oak Lawn, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 27, 2025 · Synced Sep 5, 2026, 4:16 AM EDT
Completed Phase 4 Interventional Results available

Catheter Evaluation for Endocardial Ablation in Patients With Typical Atrial Flutter

NCT00318565
View directory record Official record
Conditions
Atrial Flutter
Interventions
RF energy delivery for treatment of Typical Atrial flutter
Device
Lead sponsor
Biosense Webster, Inc.
Industry
Eligibility
18 Years and older
Enrollment
291 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
23
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Los Angeles, California + 20 more
Source: ClinicalTrials.gov public record
Updated Mar 4, 2012 · Synced Sep 5, 2026, 4:16 AM EDT
Terminated No phase listed Observational

SHERLOCK 3CG™ Diamond Tip Confirmation System

NCT03288766
View directory record Official record
Conditions
Indication for Peripheral Intravenous Catheterization, Atrial Flutter, Premature Atrial Contraction, Premature Ventricular Contraction, Premature Junctional Contraction, Tachycardia, Atrioventricular Block, Bundle-Branch Block
Interventions
PICC placement with SHERLOCK 3CG™ Diamond TCS with MODUS II software
Procedure
Lead sponsor
C. R. Bard
Industry
Eligibility
21 Years and older
Enrollment
232 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
6
States / cities
Las Vegas, Nevada • Greensboro, North Carolina • Greenville, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 19, 2021 · Synced Sep 5, 2026, 4:16 AM EDT
Not listed No phase listed Observational

PREdicting Atrial Fibrillation or Flutter

NCT01851902
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Flutter
Interventions
Not listed
Lead sponsor
Keesler Air Force Base Medical Center
Federal
Eligibility
18 Years and older
Enrollment
360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Keesler Air Force Base, Mississippi
Source: ClinicalTrials.gov public record
Updated Jan 4, 2016 · Synced Sep 5, 2026, 4:16 AM EDT
Terminated No phase listed Observational

Markers of Oxidative Stress Present in Left Atrial Appendage Tissue in Patients With Atrial Fibrillation

NCT00243802
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Flutter, Inflammation
Interventions
Not listed
Lead sponsor
Emory University
Other
Eligibility
18 Years to 65 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 26, 2013 · Synced Sep 5, 2026, 4:16 AM EDT