HAS-BLED
Bleeding risk factors in AF; table1 convention.
HAS-BLED
Principle
One point per criterion; renal/hepatic function and medications/alcohol counted separately. Total 0–9.
Scope
Adult atrial fibrillation; convention from table1 Pisters2010. Labile INR: criterion during VKA use, no VKA explicitly distinguished from stable INR. Missing data without imputation.
Interpretation limits
Identify modifiable bleeding factors and adjust monitoring. HAS-BLED does not alone decide whether to initiate or stop anticoagulation (ESC 2024). The total is not an individual probability. Alcohol convention >8 units/week.
Formula and logic
One point per criterion; renal/hepatic function and medications/alcohol counted separately. Total 0–9.
Interpretation
- 0–2
- Score below 3
- 3–9
- High bleeding risk · review factors
Definition version : 0.1.0
Sources
- Pisters et al. · CHEST — HAS-BLED — Euro Heart Survey, tableau 1
2010 · Nine possible points. Alcohol convention from table1 >8 units/week; discrepancy ≥8 elsewhere in the same article explicitly retained in the CDC. Creatinine ≥200 µmol/L visually checked.
- European Society of Cardiology — Guidelines fibrillation atriale, section 6.7
2024 · Assess/correct modifiable factors; no particular score recommended; do not use a bleeding score alone to decide to start/withdraw an anticoagulant.