HAS-BLED Score

Bleeding risk on anticoagulation in atrial fibrillation

Bleeding Risk Factors (1 pt each)

Uncontrolled Hypertension (SBP >160 mmHg)ModifiableRenal disease (dialysis, transplant, Cr >2.26 mg/dL or >200 µmol/L)Liver disease (cirrhosis, bilirubin >2× normal, ALT/AST >3× normal)Stroke historyPrior major bleeding or bleeding predispositionLabile INR (TTR <60% on warfarin)ModifiableElderly age >65Drugs: antiplatelet agents or NSAIDsModifiableAlcohol: ≥8 drinks/weekModifiable

0/9Low Bleeding Risk

Anticoagulation generally appropriate if indicated.

High HAS-BLED does not mean OAC should be withheld — stroke risk from untreated AFib usually exceeds bleeding risk. Address modifiable factors. See CHA₂DS₂-VASc.

For clinical decision support only. Does not replace provider judgment. Verify all scores before acting on results.