Severity of croup (0-17).
Stridor
0Retractions
0Air entry
0Cyanosis
0Level of consciousness
0Westley score
0 /17
≤ 2: mild – oral dexamethasone 0.15-0.6 mg/kg
≤ 2: mild – oral dexamethasone 0.15-0.6 mg/kg
3-5: moderate – dexamethasone; observe
6-11: severe – nebulised adrenaline + dexamethasone; HDU
≥ 12: impending respiratory failure – senior airway help
Formula
stridor + retractions + air + cyanosis + loc
References
Calculators support, not replace, clinical judgement. Check inputs and units, and confirm doses with your unit protocol.

