Atrial fibrillation
HAS-BLED score
Bleeding risk on anticoagulation
- Results update as you type
- For healthcare professionals
Calculator
HAS-BLED
9 inputs · instant result
About this calculator
Estimates the 1-year risk of major bleeding in patients with atrial fibrillation on anticoagulation. Use it to find and correct modifiable bleeding risk factors and to plan follow-up, not to decide against anticoagulation.
How to read the result
| Result | Meaning |
|---|---|
| 0 to 1 | Low bleeding risk |
| 2 | Moderate bleeding risk |
| 3 or more | High bleeding risk: correct modifiable factors and review more often |
References
- Pisters R, et al. A novel user-friendly score (HAS-BLED) to assess 1-year risk of major bleeding in patients with atrial fibrillation. Chest. 2010;138:1093-1100.
- Van Gelder IC, et al. 2024 ESC Guidelines for the management of atrial fibrillation. Eur Heart J. 2024;45:3314-3414.
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Recorded lecture New
Atrial Fibrillation: Rate, Rhythm and Anticoagulation
Dr. Meera Iyer
Atrial Fibrillation
