Evaluating anticoagulation for new atrial fibrillation after heart surgery
Official title: Anticoagulation for New-Onset Post-Operative Atrial Fibrillation After CABG
Run by Icahn School of Medicine at Mount Sinai · NCT04045665 · Data updated 2026-11-12
This study is testing if adding a blood thinner to regular heart medication can help patients who develop new atrial fibrillation after heart surgery, while also keeping an eye on any bleeding risks.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 3200 (estimated) |
| Sponsor | Icahn School of Medicine at Mount Sinai Academic / other |
| Locations | 106 sites (Little Rock, Arkansas and 105 other locations) |
| Status | Recruiting |
| Started | December 13, 2019 |
| Main results expected | August 31, 2026 |
| Study ends | August 31, 2026 |
| Registry record updated | June 26, 2026 |
| Trial ID | NCT04045665 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 and older who have undergone isolated CABG and developed persistent or recurrent POAF.
✕Probably not a fit
Patients with a history of atrial fibrillation or those requiring long-term anticoagulation prior to surgery will not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study aims to assess the effectiveness and safety of adding oral anticoagulation (OAC) to standard antiplatelet therapy in patients who experience new-onset post-operative atrial fibrillation (POAF) following coronary artery bypass graft (CABG) surgery. It is a multicenter, open-label, randomized trial that compares outcomes between patients receiving OAC and those on antiplatelet therapy alone. The primary focus is on preventing thromboembolic events while monitoring for major bleeding complications over a 90-day period. Patients who decline randomization will be enrolled in a parallel registry to capture their treatment strategies and outcomes.
Why it matters
Potential benefit: If successful, this study could significantly reduce the risk of thromboembolic events in patients with new-onset POAF after CABG surgery.
How similar studies have gone: Previous studies have shown promise in using anticoagulation strategies for atrial fibrillation, but this specific approach in the post-operative setting is relatively novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Patients of age ≥18 years who undergo isolated CABG for coronary artery disease * POAF that persists for \>60 minutes or is recurrent (more than one episode) within 7 days after the index CABG surgery Exclusion Criteria: * Clinical history of either permanent, persistent or paroxysmal atrial fibrillation * Any pre-existing clinical indication for long-term OAC * Any absolute contraindication to OAC * Planned use of post-operative dual antiplatelet therapy (DAPT) a. This includes, but is not limited to, patients with recent PCI with drug-eluting or bare-metal stent. * Cardiogenic shock * Major perioperative complication\* occurring between CABG and randomization a. including, but not limited to, stroke, TIA, MI, major bleeding (BARC type 4 bleeding), severe sepsis, renal failure requiring dialysis, or need for reoperation due to bleeding (e.g. pericardial tamponade). * Concomitant left atrial appendage closure during CABG * Concomitant valve surgery during CABG or prior valve surgery (including aortic, mitral, tricuspid or pulmonary) * Concomitant mitral valve annuloplasty during CABG * Concomitant carotid artery endarterectomy during CABG * Concomitant aortic root replacement during CABG * Concomitant surgery for AF during CABG * Liver cirrhosis or Child-Pugh Class C chronic liver disease * Pharmacologic therapy with an investigational drug or device within 30-days prior to randomization or plan to enroll patient in an investigational drug or device trial during participation in this trial * Pregnancy at the time of randomization * Unable or unwilling to provide inform consent * Unable or unwilling to comply with the study treatment and follow-up * Existence of underlying disease that limits life expectancy to less than one year
Where it's running
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CHI St. Vincent, Arkansas
Little Rock, Arkansas, United States Recruiting -
University of Southern California
Los Angeles, California, United States Recruiting -
Cedars-Sinai Medical Center
Los Angeles, California, United States Recruiting -
Stanford University
Stanford, California, United States Recruiting -
Yale Medicine
New Haven, Connecticut, United States Recruiting -
MedStar Washington Hospital Center
Washington D.C., District of Columbia, United States Recruiting
Show 44 more locations
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Emory University
Atlanta, Georgia, United States Recruiting -
Piedmont Healthcare Inc.
Atlanta, Georgia, United States Recruiting -
Ochsner Clinic
New Orleans, Louisiana, United States Recruiting -
Maine Medical Center
Portland, Maine, United States Recruiting -
University of Maryland
Baltimore, Maryland, United States Recruiting -
Johns Hopkins
Baltimore, Maryland, United States Recruiting -
Massachusetts General Hospital
Boston, Massachusetts, United States Recruiting -
Brigham and Women's Hospital
Boston, Massachusetts, United States Recruiting -
University of Michigan
Ann Arbor, Michigan, United States Recruiting -
Mayo Clinic
Rochester, Minnesota, United States Recruiting -
Mid America Health Institute
Kansas City, Missouri, United States Recruiting -
Washington University School of Medicine
St Louis, Missouri, United States Recruiting -
Dartmouth-Hitchcock Medical Center
Lebanon, New Hampshire, United States Recruiting -
Jersey Shore University Medical Center
Neptune City, New Jersey, United States Recruiting -
Northwell Health System
Great Neck, New York, United States Recruiting -
Columbia University Medical Center
New York, New York, United States Recruiting -
Montefiore Medical Center
The Bronx, New York, United States Recruiting -
Duke University
Durham, North Carolina, United States Recruiting -
East Carolina University
Greenville, North Carolina, United States Recruiting -
Cleveland Clinic Foundation
Cleveland, Ohio, United States Recruiting -
University of Pennsylvania
Philadelphia, Pennsylvania, United States Recruiting -
Baylor College of Medicine
Houston, Texas, United States Recruiting -
Michael E. DeBakey VA Medical Center
Houston, Texas, United States Recruiting -
Baylor Research Institute
Plano, Texas, United States Recruiting -
Intermountain CV Research
Murray, Utah, United States Recruiting -
University of Utah
Salt Lake City, Utah, United States Recruiting -
University of Vermont
Burlington, Vermont, United States Recruiting -
University of Virginia Health System
Charlottesville, Virginia, United States Recruiting -
West Virginia University
Morgantown, West Virginia, United States Recruiting -
University of Alberta Hospital
Edmonton, Alberta, Canada Recruiting -
London Health Sciences Centre
London, Ontario, Canada Recruiting -
Sunnybrook Hospital
Toronto, Ontario, Canada Recruiting -
Montreal Heart Institute
Montreal, Quebec, Canada Recruiting -
Centre Hospitalier de l'Université de Montréal
Montreal, Quebec, Canada Recruiting -
Hôpital Laval
Québec, Canada Recruiting -
Heart Center Leipzig
Berlin, Brandenburg, Germany Recruiting -
University Medical Center Jena
Jena, Thuringia, Germany Recruiting -
Kerckhoff Klinik, Bad Nauheim
Bad Nauheim, Germany Recruiting -
German Heart Center Berlin
Berlin, Germany Recruiting -
University Hospital Bonn
Bonn, Germany Recruiting -
Heinrich Heine University Düsseldorf
Düsseldorf, Germany Recruiting -
Frankfurt University Hospital
Frankfurt, Germany Recruiting -
Heart Center, University of Freiburg
Freiburg im Breisgau, Germany Recruiting -
University Medical Center Halle
Halle, Germany Recruiting
+56 more sites. See ClinicalTrials.gov for the full list.
Study contacts
- Principal investigator: Annetine C Gelijns, PhD — Icahn School of Medicine at Mount Sinai
- Study coordinator: Jonathan Hupf
- Email: Jonathan.Hupf@mountsinai.org
- Phone: (212) 659-6862
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.