🩸 HAS-BLED Bleeding Risk Score
Estimate major bleeding risk on anticoagulation in atrial fibrillation with HAS-BLED.
HAS-BLED Bleeding Risk Score
Uncontrolled hypertension (SBP > 160)
Abnormal renal function
Abnormal liver function
Stroke history
Prior major bleeding / predisposition
Labile INR (TTR < 60%)
Elderly (age > 65)
Drugs (antiplatelet/NSAID)
Alcohol ≥ 8 units/week
When to use
Identify modifiable bleeding risk factors in AF anticoagulation decisions.
How it works
1 point each: hypertension, abnormal renal, abnormal liver, stroke, bleeding, labile INR, elderly (>65), drugs, alcohol. ≥ 3 = high risk.
Key points
- Use to address reversible factors, not to withhold anticoagulation.
- Weigh against stroke risk (CHA₂DS₂-VASc).
- Labile INR applies to warfarin (TTR < 60%).
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.