MDCalc

HAS-BLED Score for Major Bleeding Risk

Estimates risk of major bleeding for patients on anticoagulation to assess risk-benefit in atrial fibrillation care.

Hypertension
Uncontrolled, >160 mmHg systolic
Renal disease
Dialysis, transplant, Cr >2.26 mg/dL or >200 µmol/L
Liver disease
Cirrhosis or bilirubin >2x normal with AST/ALT/AP >3x normal
Stroke history
Prior major bleeding or predisposition to bleeding
Labile INR
Unstable/high INRs, time in therapeutic range <60%
Age >65
Medication usage predisposing to bleeding
Aspirin, clopidogrel, NSAIDs
Alcohol use
≥8 drinks/week

Result:

Please fill out required fields.
Advice
  • This tool is not intended to determine whether anticoagulation should be used; use results to identify and mitigate modifiable bleeding risk factors and inform decisions about monitoring and follow-up.
  • Patient specific risks and benefits of anticoagulation must be carefully weighed in all patients who are potential candidates for long-term anticoagulation therapy.
Have feedback about this calculator?