ABC Score for Massive Transfusion in Trauma

A rapid, 4-variable bedside scoring tool that identifies trauma patients at highest risk of requiring massive transfusion (MT) — defined as ≥10 units of packed red blood cells in 24 hours. The ABC (Assessment of Blood Consumption) score is derived from immediately available clinical and ultrasound variables and is designed to be calculated within minutes of trauma patient arrival, enabling early activation of massive transfusion protocols (MTP).