In patients with atrial fibrillation who are started on anticoagulation, what is the risk of major bleeding in 1 year?




The HAS-BLED score was developed as a practical risk score to estimate the 1-year risk for major bleeding in patients with atrial fibrillation.

Major bleeding defined as any bleeding requiring hospitalization, and/or causing a decrease in hemoglobin level > 2 g/L, and/or requiring blood transfusion that was not hemorrhagic stroke.

Consider using the HAS-BLED score as a tool to potentially guide the decision to start anticoagulation in patients with atrial fibrillation.Consider comparing the risk for major bleeding as calculated by the HAS-BLED score to the risk for thromboembolic events by the CHADS2 or CHA2DS2-VASc to determine if the benefit of anti-coagulation outweighs the risk.


Pisters, Ron. “A Novel User-Friendly Score (HAS-BLED) To Assess 1-Year Risk Of Major Bleeding In Patients With Atrial Fibrillation”. Chest 138.5 (2010): 1093. Web.

http://www.mdcalc.com/has-bled-score-for-major-bleeding-risk/ accessed 01/19/2016.


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