The HAS-BLED score is a clinical tool used to assess the risk of major bleeding in patients with atrial fibrillation (AFib) who are on anticoagulation therapy. It evaluates risk factors such as hypertension, abnormal renal/liver function, stroke history, bleeding history, labile INR, age, and drug/alcohol use.
HAS-BLED Score Calculator
HAS-BLED Scoring System:
| Risk Factor | Points |
|---|---|
| Hypertension | 1 |
| Abnormal Renal Function | 1 |
| Abnormal Liver Function | 1 |
| Stroke History | 1 |
| Bleeding History/Predisposition | 1 |
| Labile INR (if on warfarin) | 1 |
| Age >65 | 1 |
| Drugs/Alcohol Use | 1 |
Interpretation of HAS-BLED Score:
| Score | Bleeding Risk |
|---|---|
| 0 | Low risk (~1.13 bleeds per 100 patient-years) |
| 1 | Low risk (~1.02 bleeds per 100 patient-years) |
| 2 | Moderate risk (~1.88 bleeds per 100 patient-years) |
| 3 | High risk (~3.74 bleeds per 100 patient-years) |
| 4 | High risk (~8.70 bleeds per 100 patient-years) |
| ≥5 | Very high risk (~12.50 bleeds per 100 patient-years) |