Emergency Medicine · Trauma
STUMBL Score calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Allowed range: 0–120 years
One point for each decade starting at age 10. Ages 10–19 score 1, 60–69 score 6, and ages under 10 score 0.
Allowed range: 0–24 fractures
Three points for each rib fracture, counted on imaging or suspected on examination.
Allowed range: 50–100 %
Two points for each 5% step below 95%. Saturation of 95–100% scores 0, 94–90% scores 2, and 89–85% scores 4.
Result
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Clinical inputs
- Age (years)Accepted range: 0 to 120
- Rib fracturesAccepted range: 0 to 24
- Chronic lung disease
- Anticoagulant before injury
- Oxygen saturation (%)Accepted range: 50 to 100
Primary source
Battle C et al. Predicting outcomes after blunt chest wall trauma: development and external validation of a new prognostic model. Crit Care. DOI: 10.1186/cc13873. PMID: 24887537. Table 4 assigns 1 point per 10-year increase starting at 10 years of age, 3 points per rib fracture, 5 for chronic lung disease, 4 for pre-injury anticoagulant use, and 2 points per 5% decrease in oxygen saturation starting at 94%. The worked example is age 67 (6 points), three rib fractures (9), chronic lung disease (5), and saturation 87% (4), totaling 24. Table 5 mean complication probabilities are 13% for 0–10, 29% for 11–15, 52% for 16–20, 70% for 21–25, 80% for 26–30, and 88% for 31 or higher. (2014)
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