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Archivos de Pediatría del Uruguay
Print version ISSN 0004-0584On-line version ISSN 1688-1249
Abstract
FISCHER, Agustín et al. Low risk newborns' weight variation in the first 72 hours of life at the Pereira Rossell Hospital Center (CHPR) in 2016. Arch. Pediatr. Urug. [online]. 2017, vol.88, n.6, pp.308-314. ISSN 0004-0584. https://doi.org/10.31134/ap.88.6.2.
Background:
during the first 72 hours after birth, newborns lose weight due to the contraction of extravascular fluid which allows the adequate adaptation to extra uterine life. Objectives: to determine the variation in weight in low risk newborns during postpartum hospitalization depending on delivery mode and feeding type. To generate graphs of average weight variation depending on the hours of life for low risk newborns during postpartum hospitalization at CHPR, to be used in clinical practice. Methods: an observational, descriptive and prospective study of a convenience sample, at the maternity units of CHPR, from July 11, 2016 to August 31 of the same year, with a sample of 431 infants. Three weight values were recorded. The first two, weight at birth and at discharge were extracted from the Perinatal Information System (SIP) and the third weight value was measured by researchers between 6 and 72 hours of life. Results: 90.4% of newborns showed a decrease in weight at discharge, with an average of 5.3±3.2% loss. The maximum weight loss percentage was observed between 42-48 hours with mean of 5.7±3.5%, with a tendency towards stabilizing this decline in the following hours without major variations afterwards. Conclusions: the average weight loss at discharge was 5.3±3.2%. The weight loss nadir was observed at 54 hours of life, being the mean -2 standard deviations 10.7%.
Keywords : Weight loss; Newborn infant; Breast feeding; Cesarean; Natural childbirth.