HAS-BLED score for major bleeding risk in atrial fibrillation
Calculator
When to use
Hypertension: uncontrolled, > 160 mmHg systolic blood pressure
No
Yes
Abnormal renal function: dialysis, transplant, creatinine > 2.26 mg/dL [> 200 mcmol/L]
No
Yes
Abnormal liver function: cirrhosis or significant biochemical hepatic abnormality
No
Yes
History of stroke
No
Yes
History of major bleeding: requiring hospitalization, transfusion, or hemoglobin decrease > 2 g/L
No
Yes
Labile INR: time in therapeutic range < 60%
No
Yes
Age > 65
No
Yes
Medication use: antiplatelet agents, NSAIDs
No
Yes
Alcohol use: ≥ 8 units/week
No
Yes
Calculation
Please enter all the required inputs.