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The HAS-BLED Score estimates the risk of major bleeding for patients on anticoagulation for atrial fibrillation (AF).
Go to the MDCalc HAS-BLED Score for Major Bleeding Risk.
- Clinical factors that contribute to stroke risk and support anticoagulation in patients with AF are frequently risk factors for bleeding as well. The HAS-BLED score was developed as a practical risk score to estimate the one-year risk for major bleeding in patients with AF.
- Study included 5,333 ambulatory and hospitalised patients with AF from both academic and non-academic hospitals in 35 member countries of the European Society for Cardiology:
- Patients were followed up at one year to determine survival and major adverse cardiovascular events, such as major bleeding.
- Major bleeding defined as any bleeding requiring hospitalisation, and/or causing a decrease in haemoglobin level >2 g/L, and/or requiring blood transfusion that was not haemorrhagic stroke.
- Researchers performed a retrospective, univariate analysis to find potential bleeding risk factors when comparing the groups with and without major bleeding at one year follow-up.
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