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Atrial Flutter: later-stage trial registry
4 of 25 indexed Atrial Flutter trials are currently recruiting, with more weight in Phase 3-4.
Corpus placement: #652 of 28,707 conditions by registered trial count.
25 US clinical trials · 4 currently recruiting · #652 of 28,707 conditions by registered trial count
Atrial Flutter: 25 US clinical trials tracked, 4 recruiting.
Atrial Flutter is the subject of 25 registered US clinical trials on ClinicalTrials.gov, 4 of them currently open to new participants. 8 are in Phase 3-4 (later-stage) and 2 in Phase 1-2 (earlier-stage). The most active sponsor is Sanofi, running 3 of these trials.
Enrollment posture brief
Registry condition atrial-flutter
OPEN 4 | RECR 16% | LATE 8 | EARLY 2 | RANK #652 | SPON 3
Volume-matched condition peers
Nearest open-share peer: Avascular Necrosis (16% recruiting · 25 trials)
Atrial Flutter lists 4 open slots (16% of 25 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for Atrial Flutter on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.
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Atrial Flutter is recruiting below its size-band peers.
4 of 25 indexed trials (16%) are open to enrollment, against a 39.7% average across 762 conditions with 20-99 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
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Sponsorship of Atrial Flutter trials is spread across many organizations.
Sanofi accounts for 3 of 25 trials (12%). 23 distinct sponsors appear on at least one study for this condition label.
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Typical Atrial Flutter enrolment sits around 276 participants.
Median target enrolment is 276 among the 24 trials that report a genuine target (sentinel values excluded). 8 of those (33.3%) plan for fewer than 100 participants.
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Atrial Flutter research is mostly interventional.
19 interventional and 6 observational studies make up this index (76% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
25 total, page 1 of 1
Get With the Guidelines Atrial Fibrillation Registry
American Heart Association
NCT06245187
Pericardiotomy in Cardiac Surgery
Population Health Research Institute
NCT06486636
The Z Stitch Early Bed Rest Assessment Study
Oregon Health and Science University
NCT06087497
Baseline Atrial Fibrosis Predicts Risk for Post-operative Atrial Fibrillation in Patients Undergoing Cardiac Surgery
Tulane University
NCT05014802
RESOLVE-AF: Clinical Evaluation of the Ablacath™ Mapping Catheter and Ablamap® System Utilizing Electrographic Flow (EGF) Mapping to Resolve Extra-PV Sources of Atrial Fibrillation and Guide Ablation Therapy.
Cortex
NCT05883631
Apixaban for the Prevention of Stroke in Subjects With Atrial Fibrillation
Bristol-Myers Squibb
NCT00412984
A Trial With Dronedarone to Prevent Hospitalization or Death in Patients With Atrial Fibrillation
Sanofi
NCT00174785
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
Sanofi
NCT00233441
American-Australian-African Trial With Dronedarone in Patients With Atrial Fibrillation or Atrial Flutter for the Maintenance of Sinus Rhythm
Sanofi
NCT00259376
Atrial Fibrillation/Flutter Outcome Risk Determination
Vanderbilt University
NCT01138644
Effect of Oral and Intravenous Diltiazem Protocol for Emergency Department Atrial Fibrillation
Corewell Health South
NCT05391893
Prophylaxis to Reduce Postoperative Atrial Fibrillation in Cardiac Surgery
MaineHealth
NCT00953212
Clinical Evaluation of the Blazer® Open-Irrigated Catheter for Treatment of Type 1 Atrial Flutter
Boston Scientific Corporation
NCT01253200
Study to Determine the Response and Effectiveness of RSD1235 in Subjects With Atrial Fibrillation or Atrial Flutter
Astellas Pharma
NCT00115791
iPhone Helping Evaluate Atrial Fibrillation Rhythm Through Technology
Columbia University
NCT02731326
Clinical Study to Evaluate the Catheter Robotics Amigo for Performing Right-Sided Electrophysiology Mapping Studies
Catheter Robotics
NCT01139814
Use of Dabigatran Etexilate to Prevent Stroke and Thromboembolism
Vanderbilt University Medical Center
NCT01976507
Comparison of Intracardiac Echocardiography and Transesophageal Echocardiography
Elad Anter
NCT02213666
Impact of an Atrial Fibrillation Decision Support Tool (AFDST) on Thromboprophylaxis for Atrial Fibrillation
University of Cincinnati
NCT02524977
A Phase II/III Tolerance and Efficacy Study of RSD1235 in Patients With Atrial Flutter
Advanz Pharma
NCT00476112
FREEZE-AFIB Post-Market Study
AtriCure
NCT05089877
Long Term Arrhythmia Risk and Cardiovascular Events in Hematopoietic Stem Cell Transplant
Abramson Cancer Center at Penn Medicine
NCT04118530
Evaluation of the Use of Apple Watch Features for Identification of Cardiac Arrhythmias
Apple
NCT03769207
ArcticLine Feasibility Study
Medtronic Cardiac Ablation Solutions
NCT03604263
Intravenous Tedisamil in the Rapid Conversion of Atrial Fibrillation or Flutter to Normal Sinus Rhythm in Female Subjects
Solvay Pharmaceuticals
NCT00126022
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 2 | 2 |
| Phase 3 | 6 |
| Phase 4 | 2 |
Top Sponsors
Named interventions
Most-linked intervention names on Atrial Flutter records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Atrial Flutter trials. A trial with sites in several states counts in each.
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Related
What to do with this Atrial Flutter page
25 registered trials, 4 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 4 Atrial Flutter trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Sanofi sponsors the most Atrial Flutter trials on record, review their full trial history before evaluating a specific study. See Sanofi's trials
- Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide
Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Atrial Flutter condition card totals 25 registered trials; most-linked intervention placebo; top US site state Michigan. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.