HAS-BLED Score Calculator
Assess major bleeding risk in patients on anticoagulation therapy for atrial fibrillation.
HAS-BLED Criteria
Select all risk factors present:
HAS-BLED Score
0
Low Risk
Bleeding Risk/Year
1.13%
Risk Category
Low Risk
Clinical Recommendation
Low bleeding risk. Anticoagulation can be initiated with routine monitoring.
Score Interpretation
- 0: Low risk (1.13%/year)
- 1-2: Moderate risk (1-2%/year)
- ≥3: High risk (>3%/year) - caution advised
Modifiable Risk Factors
Hypertension, labile INR, drugs, and alcohol are modifiable. Addressing these can reduce bleeding risk.