Accuracy of Crib-Ii for Predicting Mortality of Preterm Infants Admitted to the NICU

Background: Survival of infants admitted to the NICU does not depend exclusively on birth weight and gestational age, but on other perinatal factors and physiological conditions of individual infants, especially the severity of their illness. Therefore, scoring systems are needed to assess the risk of adverse outcomes for each premature infant. In this study, the accuracy of Crib-II was investigated to predict the mortality of premature babies admitted to the NICU.Methods: ۱۴۰ babies admitted to the NICU, meeting the selection criteria (gestational age less than ۳۲ weeks or weight less than ۱۵۰۰ grams) were included in the study. The required data for the Crib-II tool (gender, gestational age, birth weight, initial temperature of the baby, and base excess) were collected and analyzed using SPSS software version ۲۳.Results: In this study, ۴۵% (۶۳ infants) were female and ۵۵% (۷۷ infants) were male, with a mortality rate of ۳۰.۷%. The average gestational age was ۳۰.۱۷±۲.۱۴ weeks, the average birth weight was ۱۸۵۶.۵۲±۵۸۳.۱۸ grams, the average initial rectal temperature was ۳۶.۹۲±۰.۵۲ °C, the average base excess was -۸.۵۴±۷.۰۹ mmol/L, the average Crib-II score was ۵.۱۵±۴.۴۳, and the area under the roc curve with a cut point of ۶.۵ was ۰.۹۶. Also, the sensitivity, specificity, positive predictive value, negative predictive value, positive likelihood ratio, and negative likelihood ratio were ۹۶%, ۹۳%, ۹۸%, ۹۵%, ۹۷%, ۴۶.۵, and ۰.۰۷, respectively.Conclusion: Based on our observations in this study, the Crib-II index has a high value in predicting the mortality of premature babies. It was able to correctly predict ۹۶% of the deaths of premature babies, which indicates the high value of this index.

کلیدواژه ها:

CRIB-II ، Infant mortality ، premature baby