ATRIA Bleeding Score
ATRIA bleeding-risk score (Fang 2011): anemia (3), severe renal disease (3), age >= 75 (2), prior hemorrhage (1), hypertension (1); 0-3 low, 4 intermediate, 5-10 high annual major-bleed risk.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Anemia (Hb < 13 men / < 12 women)
- Yes
- Severe renal disease (eGFR < 30 or dialysis)
- No
- Age >= 75 years
- Yes
- Prior hemorrhage diagnosis
- No
- Hypertension
- Yes
Result: ATRIA 6 of 10: high annual major-bleed risk 5.8% per Fang 2011 Table 3 (5-10 band).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- 0-3
- Low annual major-bleed risk 0.8%/yr per Fang 2011 Table 3.
- 4
- Intermediate annual major-bleed risk 2.6%/yr per Fang 2011 Table 3.
- 5-10
- High annual major-bleed risk 5.8%/yr per Fang 2011 Table 3.
What you enter
- Anemia (Hb < 13 men / < 12 women) (3)
- Severe renal disease (eGFR < 30 or dialysis) (3)
- Age >= 75 years (2)
- Prior hemorrhage diagnosis (1)
- Hypertension (1)
How this is calculated
Fang MC, Go AS, Chang Y, et al. A new risk scheme to predict warfarin-associated hemorrhage. The ATRIA (Anticoagulation and Risk Factors in Atrial Fibrillation) Study. J Am Coll Cardiol. 2011;58(4):395-401. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.