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ATRIA Bleeding Risk Score
Estimates major hemorrhage risk on warfarin in patients with atrial fibrillation.
ATRIA Bleeding Risk Score
Anemia (hemoglobin <13 g/dL men, <12 g/dL women)
Severe renal disease (eGFR <30 mL/min or dialysis-dependent)
Age >=75 years
Prior hemorrhage
Diagnosed hypertension
Result0 points
Approximate major hemorrhage rate of 0.8% per year on warfarin.
- Annual major hemorrhage rate
- 0.8%
When to use
- Weighing bleeding risk against stroke-prevention benefit before starting or continuing anticoagulation in atrial fibrillation.
Formula
Points: anemia 3, severe renal disease 3, age >=75 years 2, prior hemorrhage 1, hypertension 1. Score 0-3 = low risk, 4 = intermediate, 5-10 = high risk.
Pearls and pitfalls
- Derived in a warfarin-treated AF cohort; applicability to direct oral anticoagulants is less well validated.