CardiologyCardiology

Bleeding Risk Score in Atrial Fibrillation

Estimates 1-year major bleeding risk in patients on anticoagulation for AF. Does not contraindicate anticoagulation.

Uncontrolled hypertension — SBP > 160 mmHg

Abnormal renal function — dialysis, transplant, or creatinine > 200 µmol/L

Abnormal liver function — cirrhosis, or bilirubin > 2× / transaminases > 3× ULN

Prior stroke history

Prior major bleeding or predisposition to bleeding

Labile INR — unstable/high INR, or TTR < 60%

Elderly — age > 65 years

Drugs — antiplatelet agents or regular NSAIDs

Alcohol excess — ≥ 8 drinks per week

HAS-BLED/ 9

Low bleeding risk

~1% major bleed per year

Reference: Pisters R et al. Chest 2010

Medical Disclaimer: This calculator is a clinical decision support tool for qualified healthcare professionals. It does not replace clinical judgement. Always interpret results in the full clinical context. Reference: Pisters R et al. Chest 2010.

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