Calculators

SNAPPE-II Score

Score for Neonatal Acute Physiology - Perinatal Extension II. Illness severity and mortality risk assessment.

Input Parameters

Worst values within the first 12 hours of NICU admission

PO2 (torr) divided by FiO2 (fraction). Example: PO2=60, FiO2=0.40 = ratio of 1.5

Scoring Reference
ParameterCriteriaPoints
Birth Weight<750g17
750-999g10
>= 1000g0
SGAYes12
No0
APGAR (1st hr)<718
>= 70
Mean BP<2019
20-299
>= 300
Lowest pH<7.1016
7.10-7.197
>= 7.200
PO2/FiO2<1.016
1.0-<2.55
>= 2.50
Temperature<35°C15
35-35.5°C8
>= 35.6°C0
SeizuresYes19
No0
Urine Output<0.1 mL/kg/hr18
0.1-0.95
>= 1.00
References
  • 1. Richardson DK, et al. SNAP-II and SNAPPE-II: Simplified newborn illness severity and mortality risk scores. J Pediatr. 2001.
  • 2. Zupancic JA, et al. Revalidation of the Score for Neonatal Acute Physiology in the Vermont Oxford Network. Pediatrics. 2007.