RABT Score (massive transfusion 0-4 rule)
RABT score (Joseph 2018): predicts the need for massive transfusion (>= 2 of 4) from shock index, pelvic fracture, penetrating mechanism, and FAST.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Heart rate
- 130
- Systolic BP
- 100
- Pelvic fracture
- Yes
Result: RABT score 2: massive transfusion predicted (>= 2) -- consider activating the MTP.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Threshold
- >= 2 predicts massive transfusion (sensitivity 84%, specificity 77%), outperforming the ABC score in validation.
What you enter
- Heart rate (beats/min)
- Systolic BP (mm Hg)
- Pelvic fracture
- Penetrating mechanism
- Positive FAST
How this is calculated
- Items
- shock index (HR/SBP) > 1, pelvic fracture, penetrating mechanism, positive FAST -- each +1 (total 0-4).
Joseph B, Khan M, Truitt M, et al. Massive transfusion: the revised assessment of bleeding and transfusion (RABT) score. World J Surg. 2018;42(11):3702-3708. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.