Score for Neonatal Acute Physiology Perinatal Extension (SNAP-PE)

Description

The Score for Neonatal Acute Physiology Perinatal Extension (SNAP-PE) extends the SNAP score by the addition of birthweight and Apgar score information.

Parameter	Finding	Points
SNAP score for 1st 24 hours after NICU admit		SNAP score
birthweight	< 749 grams	30
	750-999 grams	10
	>= 1000 grams	0
Apgar score at 5 minutes	< 7	10
	> = 7	0
small for gestational age	< 5th%	5
	> 5th%	0

Bodyweight Small for Gestational Age

equation for determining if small for gestational age

weight at 5th% for body weight =

= (-0.06217 * ((week gestation) ^ 4)) + (7.585979 * ((week gestation) ^ 3)) - (337.3942 * ((week gestation) ^ 2)) + (6583.4774 * (week gestation) ) - 47312.4

where:

• week of gestation is weeks since last menstrual period

NOTE: This equation is for Caucasian infants. Equations for other races will be needed.

Mortality Based on SNAP-PE Information

SNAP-PE	mortality, all birth weights	mortality with birthweight <1500 grams	mortality with birthweight >= 1500 grams
0-9	0%	0%	0%
10-19	1.2%	0.9%	1.3%
20-29	12%	14%	11%
30-39	35%	38%	32%
40-49	52%	52%	50%
50-59	47%	44%	100% (N=1)
60-69	63%	63%
>= 70	75%	75%

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Score for Neonatal Acute Physiology Perinatal Extension (SNAP-PE)

Description

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