Curvas antropométricas de recién nacidos chilenos

Abstract

Objetivo: Design local anthropometric growth curves for selected newborns between 24 and 42 gestational weeks, in order to compare them with other intrauterine growth charts currently used in Chile. Method: 86.575 infants born from single pregnancy and with the described gestational age were analyzed. Newborns with maternal or fetal history of delayed intrauterine growth were excluded from de analysis. The average and standard deviation 10th - 50th - 90th percentiles for weight, length and head circumference for each gestational age were calculated, distributing the obtained information in tables and graphics. Comparative statistic analysis with the main perinatal weight/length/head circumference curves currently in use was performed. Results: The obtained anthropometric growth curves of these newborns were compared with Hadlock and Pitalugga charts with statistically significant concordance, whereas there is a statiscally significant difference with Gonzalez and 10th percentile category for premature newborns in the Juez chart. Conclusion: The anthropometric chilean neonatal charts obtained have statistical and clinical advantages in comparison with other newborn local charts currently in use. We recommend these curves for perinatologic clinical use.