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ABC Score for Massive Transfusion

TraumaHemorrhageMassive transfusionBeta toolThis tool is in beta. It has undergone internal validation but still requires additional testing. Always confirm the data entered and the results obtained before clinical use. It should not be used as the sole basis for clinical decisions.
Penetrating mechanism of injuryUse the original derivation wording rather than narrowing this to torso-only penetrating injury.
FAST positive for fluidRecord a known FAST result; do not assume an unavailable examination is negative.
Arrival SBP <=90 mmHg adds 1 point.
mmHg
Arrival heart rate >=120 bpm adds 1 point.
bpm

Clinical noticeEducational trauma decision-support tool only. Use with bedside clinical judgment and institutional protocols, not as a standalone transfusion rule.

Context and use

ABC = penetrating mechanism (1) + positive FAST (1) + SBP <=90 mmHg (1) + heart rate >=120 bpm (1)

Total score 0-4. A result >=2 is the validated positive threshold from the original adult trauma studies.

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