abc_massive_transfusion: Assessment of Blood Consumption (ABC) Score for Massive...

In cliot: Clinical Indices and Outcomes Tools

Assessment of Blood Consumption (ABC) Score for Massive Transfusion

Description

Calculates the ABC Score to predict the need for massive transfusion in adult trauma patients. The score uses four non-laboratory variables available early in the trauma resuscitation to identify patients who may benefit from activation of a Massive Transfusion Protocol (MTP).

Usage

abc_massive_transfusion(penetrating_mechanism, positive_fast, sbp_mmHg, hr_bpm)

Arguments

penetrating_mechanism	Numeric (0 or 1). Was the mechanism of injury penetrating? 1 = Yes, 0 = No.
positive_fast	Numeric (0 or 1). Was the Focused Assessment with Sonography for Trauma (FAST) positive? 1 = Yes, 0 = No.
sbp_mmHg	Numeric. Arrival Systolic Blood Pressure in mmHg. (1 point is added if SBP <= 90).
hr_bpm	Numeric. Arrival Heart Rate in beats per minute. (1 point is added if HR >= 120).

Value

A list containing:

Total_Score	The sum of risk factors present (Range 0-4).
Interpretation	Clinical interpretation indicating likelihood of needing massive transfusion (Score >= 2 suggests MTP activation).

References

Nunez TC, Voskresensky IV, Dossett LA, et al. Early prediction of massive transfusion in trauma: simple as ABC (assessment of blood consumption)? J Trauma. 2009;66(2):346-352. doi:10.1097/TA.0b013e3181961c35

Examples

# Example 1: MTP Likely
# Penetrating trauma, Positive FAST, Hypotensive, Tachycardic
abc_massive_transfusion(1, 1, 85, 130)

# Example 2: MTP Unlikely
# Blunt trauma, Negative FAST, Stable vitals
abc_massive_transfusion(0, 0, 110, 88)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.