ABC Score for Massive Transfusion
One point each: age ≥70 years, base deficit <−6 mmol/L (or not reported as surrogate per local protocol), SBP <90 mmHg.
Calculator
How it works
The ABC score is used early in trauma to estimate need for massive transfusion activation.
Limits
Penetrating vs blunt cohorts differ; base deficit availability and timing matter.
Educational tool only—not for diagnosis or treatment decisions.