ABC Score (Massive Transfusion) — free guideline decision tool
Predict massive transfusion need in trauma with the ABC score.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Penetrating mechanism | No |
|---|---|
| Systolic BP ≤ 90 mmHg | No |
| Heart rate ≥ 120 bpm | No |
| Positive FAST | No |
→ABC score0/4
- Interpretation：< 2 — massive transfusion less likely
- Action：Continue standard resuscitation and reassess.
| Penetrating mechanism | Yes (+1) |
|---|---|
| Systolic BP ≤ 90 mmHg | Yes (+1) |
| Heart rate ≥ 120 bpm | Yes (+1) |
| Positive FAST | Yes (+1) |
→ABC score4/4
- Interpretation：≥ 2 — predicts need for massive transfusion
- Action：Activate the massive transfusion protocol early.
Common questions
What is ABC Score (Massive Transfusion)?
Predict massive transfusion need in trauma with the ABC score.
How is ABC Score (Massive Transfusion) calculated? What is the core formula?
Penetrating mechanism, SBP ≤ 90, HR ≥ 120, positive FAST — each 1 point. ≥ 2 predicts massive transfusion.
When is ABC Score (Massive Transfusion) used?
Trigger early massive transfusion protocol activation.
What are the key clinical points for ABC Score (Massive Transfusion)?
Uses only bedside data — no laboratory values. Intentionally simple and sensitive. ≥ 2 should prompt MTP activation.
What are the limits and cautions when using ABC Score (Massive Transfusion)?
For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
How is ABC Score (Massive Transfusion) calculated in practice? Can you show a worked example?
Inputs: Penetrating mechanism No, Systolic BP ≤ 90 mmHg No, Heart rate ≥ 120 bpm No, Positive FAST No → Result: ABC score 0 /4（Interpretation: < 2 — massive transfusion less likely, Action: Continue standard resuscitation and reassess.） Inputs: Penetrating mechanism Yes (+1), Systolic BP ≤ 90 mmHg Yes (+1), Heart rate ≥ 120 bpm Yes (+1), Positive FAST Yes (+1) → Result: ABC score 4 /4（Interpretation: ≥ 2 — predicts need for massive transfusion, Action: Activate the massive transfusion protocol early.）
Run ABC Score (Massive Transfusion) now
Predict massive transfusion need in trauma with the ABC score.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
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