Outpatient Bleeding Risk Index (OBRI) Calculator
- Outpatient Bleeding Risk Index (OBRI): Explanation and Clinical Context
OBRI is a validated scoring system developed to predict the risk of major bleeding in outpatients receiving oral anticoagulant therapy, particularly warfarin.
It assigns 1 point each for four clinical risk factors: age >65 years, history of stroke, history of gastrointestinal bleeding, and comorbid conditions including diabetes mellitus, cardiovascular disease, or renal disease.
The total score ranges from 0 to 4, stratifying patients into low, moderate, high, or very high risk for major bleeding.
This tool aids clinicians in risk stratification, guiding anticoagulation therapy decisions, and planning follow-up intensity.
Reference:
Ruiz M, et al. Outpatient Bleeding Risk Index for patients on oral anticoagulants. Arch Intern Med. 1998;158:409-416. doi:10.1001/archinte.158.4.409
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