Weight decrease in full-term newborns in the first 48 hours post natal

Revista chilena de pediatría
Miguel Gallardo LópezLaura Gallardo Cadenasso

Abstract

It is known that the newborn (NB) presents weight loss immediately after birth. The magnitude of the weight loss is a controversial subject and there are no data in our sphere. Objecti ves: To determine the percentage of daily weight decrease in healthy full-term newborns in the first 48 hours of life. To specify whether factors such as gender, type of delivery, adequacy for gestational age, and use of milk formula influence weight loss. Prospective study in healthy full-term newborns with > 37 weeks of gestational age during their stay in the nursery (puerperium). Weight data were collected at birth, 24 and 48 hours after birth, and the percentages of weight loss were calculated from the daily nursing record. In addition, gender, type of delivery, adequacy to the birth and type of feeding of the NB, either exclusive breastfeeding, artificial formula or mixed (breast milk and formula) were recorded. To standardize the measurements, weights were expressed in grams and subsequently the percentage of weight loss was calculated in relation to the birth and the previous day. The maximum percentage of weight loss per day variable was analyzed. A multivariate regression model was performed for the weight loss percentages evolution. 29...Continue Reading

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