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Study identifier: NCT06401616 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Can Patients With Atrial Fibrillation Safely Discontinue Anticoagulant Therapy After Cardiac Surgery? (ATLAAC)

Condition: Atrial Fibrillation · Left Atrial Appendage Absent · Anticoagulant Adverse Reaction  ·  Sponsor: Odense University Hospital

PhasePhase 4
Planned participants1220
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

Left atrial appendage (LAA) closure has become a frequent addition to oral anticoagulation in patients with atrial fibrillation who undergo cardiac surgery. The procedure significantly reduces the risk of stroke and systemic embolism, which may render anticoagulation unnecessary or even harmful when considering the associated increased risk of bleeding. A clinical trial to address the need for anticoagulation after LAA closure is needed. The ATLAAC trial will enroll 1220 patients with atrial fibrillation who have previously undergone surgical LAA closure. Patients will undergo a cardiac CT-scan to determine if LAA closure was successful and patients with successful closure will be randomized to continue or discontinue anticoagulation. The trial will assess the risk of ischemic stroke, peripheral arterial embolism, and major bleeding during the randomized intervention

This description comes directly from the study's public registry record.

Talk to the study team

Kristina Gosvig, M.D.  ·  +4551520696  ·  kristina.gosvig@rsyd.dk

Julie Goller, M.D.  ·  22951855  ·  julie.goller@outlook.com

Always discuss trial participation with your own doctor first.

Locations (6)

RigshospitaletCopenhagen, Capital Region, DenmarkNot Yet Recruiting
Gentofte HospitalGentofte Municipality, Capital Region, DenmarkRecruiting
Regionshospital GødstrupHerning, Central Jutland, DenmarkNot Yet Recruiting
Aalborg university hospitalAalborg, North Denmark, DenmarkNot Yet Recruiting
Århus UniversitetshospitalAarhus, Region Midt, DenmarkRecruiting
Odense University HospitalOdense, Region Syddanmark, DenmarkRecruiting

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Source record: clinicaltrials.gov/study/NCT06401616