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Ressources et utilitaires

Scoring systems for ICU and surgical patients:

SNAP-II and SNAPPE II (Score for Neonatal Acute Physiology and SNAP Perinatal Extension) 

Variables	Values	Points
Mean Blood Pressure	>= 30 mmHg 20 - 29 mmHg < 20 mmHg
Lowest temperature	> 96 ° F 95 - 96 ° F < 95 ° F ..................... > 35.6 °C 35 - 35.6 °C < 35 °C
P02 (mmHg ) / FIO2 (%)	> 2.49 1.0 - 2.49 0.3 - 0.99 < 0.3
Lowest serum pH	> = 7.20 7.10 - 7.19 < 7.10
Multiple seizures	Yes
Urine output (mL/kg.h)	> = 1 0.1 - 0.9 < 0.1
SNAP II :
Apgar score	> = 7 < 7
Birth weight	> = 1000 g 750 - 999 g < 750 g
Small for gestational age (help)	> 3 rd % < 3 rd %
SNAPPE II : In- hospital mortality : see below Data are collected within the first 12 hours after admission to the NICU

Ref: D K. Richardson et al . SNAP-II and SNAPPE-II: Simplified newborn illness severity and mortality risk scores. J Pediatr 2001; 138: 92-100 

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Gestational age (wk) 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 >41

3rd percentile birth weight (g)

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 Calibration of mortality risk model, by birth weight category
(Logistic regression equation is not available)

Observed deaths Expected deaths SNAPPE-II Total No. % No. % For all birth weights 0-9 16,274 48 0.3% 51 0.3% 10-19 3,923 61 1.6% 61 1.6% 20-29 1,952 74 3.8% 71 3.6% 30-39 1,262 93 7.4% 101 8.0% 40-49 790 124 15.7% 116 14.7% 50-59 476 105 22.1% 102 21.4% 60-69 310 101 32.6% 100 32.3% 70-79 142 55 38.7% 63 44.4% > = 80 141 94 66.7% 90 63.8%
Observed deaths Expected deaths SNAPPE-II Total No. % No. % For <1500 g 0-9 1,526 9 0.6% 7 0.5% 10-19 1,092 30 2.7% 24 2.2% 20-29 772 40 5.2% 38 4.9% 30-39 645 61 9.5% 60 9.3% 40-49 497 79 15.9% 78 15.7% 50-59 318 72 22.6% 72 22.6% 60-69 260 85 32.7% 84 32.3% 70-79 121 46 38.0% 53 43.8% > = 80 132 88 66.7% 85 64.4%	Observed deaths Expected deaths SNAPPE-II Total No. % No. % For >=1500 g 0-9 14,748 39 0.3% 45 0.3% 10-19 2,831 31 1.1% 37 1.3% 20-29 1,180 34 2.9% 33 2.8% 30-39 617 32 5.2% 40 6.5% 40-49 293 45 15.4% 38 13.0% 50-59 158 33 20.9% 30 19.0% 60-69 50 16 32.0% 16 32.0% 70-79 21 9 42.9% 10 47.6% > = 80 9 6 66.7% 5 55.6%

Patients excluded :

1. Babies released to the regular nursery in <24 hours;
2. Babies admitted to the neonatal intensive care unit at >48 hours of age or after having been discharged home;
3. Moribund infants when an explicit physician decision not to provide life support was made at the time of NICU admission;
4. Babies who died in the delivery room.

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