Emergency Medicine · Paediatrics

Pediatric Trauma BIG Score calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Admission base deficit

mmol/L

Allowed range: -30–40 mmol/L

Enter a positive number when there is a base deficit. A negative number means alkalosis, a base excess.

International normalized ratio

Allowed range: 0.5–15

Glasgow Coma Scale score

points

Allowed range: 3–15 points

Result

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Clinical inputs

Admission base deficit (mEq/L)Accepted range: -30 to 40
International normalized ratioAccepted range: 0.5 to 15
Glasgow Coma Scale score (points)Accepted range: 3 to 15

Primary source

Borgman MA et al. Pediatric trauma BIG score: predicting mortality in children after military and civilian trauma. Pediatrics. DOI: 10.1542/peds.2010-2439. PMID: 21422095. BIG = admission base deficit + (2.5 × INR) + (15 − GCS). AUC 0.89 (95% CI 0.83–0.95) in 707 derivation patients and 0.89 (95% CI 0.87–0.92) in 1,101 validation patients. No mortality cutoff is printed. (2011)

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