Related Experiment Video
Updated: Apr 20, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Is Dabigatran As Effective As Warfarin on Cardiac Thrombus in a Patient With Atrial Fibrillation? A Challenging
Murat Sunbul1, Altug Cincin, Ceyhun Mammadov
1Department of Cardiology, Faculty of Medicine, Marmara University, Istanbul, Turkey.
Insights
This case report details an atrial fibrillation patient who developed cardiac thrombus and pulmonary embolism despite dabigatran therapy. It highlights the need for more evidence on new oral anticoagulants for cardiac thrombus in AF patients.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Atrial fibrillation (AF) increases cardioembolic stroke risk.
- Warfarin is a proven treatment for stroke prevention in AF.
- Newer oral anticoagulants are increasingly used for stroke prophylaxis in nonvalvular AF.
Observation:
- This report focuses on a patient with AF experiencing cardiac thrombus and pulmonary embolism.
- The patient was undergoing treatment with dabigatran, a novel oral anticoagulant.
Findings:
- The case presents a scenario where dabigatran therapy did not prevent cardiac thrombus and pulmonary embolism in an AF patient.
- This observation suggests potential limitations or specific risks associated with new oral anticoagulants in certain AF patient subgroups.
Implications:
- There is a lack of evidence-based data on using new oral anticoagulants for treating cardiac thrombus in AF patients.
- This case underscores the need for further research into the efficacy and safety of novel anticoagulants for complex thromboembolic events in AF.
- Clinical practice may require careful consideration of alternative or adjunctive therapies for stroke and thrombosis prevention in high-risk AF patients.
Abstract:
Atrial fibrillation (AF) is an important risk factor for cardioembolic stroke. Warfarin is an effective treatment in reducing the risk of cardioembolic stroke in patients with AF. New anticoagulants have been widely using for stroke prophylaxis in patients with nonvalvular AF. Previous studies have suggested that thrombolytic therapy is effective treatment choice in patients with pulmonary embolisms. Warfarin therapy is also effective on prevention or treatment of cardiac thrombus in patients with AF. However, there are no evidence-based data on treatment of cardiac thrombus with new oral anticoagulants in patients with AF. In our case report, we reported an AF patient with cardiac thrombus and pulmonary embolism under dabigatran therapy.
Related Concept Videos
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Venous Thrombosis III: Interprofessional Care
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care
Clot Retraction and Fibrinolysis

