SNAP-II and SNAPPE II (Score for Neonatal Acute Physiology and SNAP Perinatal Extension) 
Parameter Value Points
Gestational age (wk)
birth weight (g)
Small For Gestational Age
APGAR Score
Mean Blood Pressure (mmHg)
Lowest Serum pH
PO2/FiO2 ratio
Lowest Temprature ( °C )
Multiple Seizures ?
Urine Output (ml/Kg/hr)
Total SNAPPE - II
Observed deaths Expected deaths
Interpretation of SNAPPE-II No. % No. %
For all birth weights
For < 1500 g
For >= 1500 g