874 OriGinal arTiCle rev Chil Pediatr. 2020;91(6):874-880 DOi: 10.32641/rchped.v91i6.1399 Correspondence: Gabriel Del Castillo C. gadelca@gmail.com How to cite this article: rev Chil Pediatr. 2020;91(6):874-880. DOi: 10.32641/rchped.v91i6.1399 Characterization of full term newborns with hypernatremic dehydration Caracterización de recién nacidos a término con deshidratación hipernatrémica Del Castillo C. Gabriel a,b , Suares A. Diana a , Granja A. María a , Oviedo E. Bibiana a , Urbano U. Jhuranny a , Cabrera B. Nancy a,c a Fundación Hospital Infantil Los Ángeles, San Juan de Pasto, Colombia b Universidad de Nariño, San Juan de Pasto, Colombia c Fundación Universitaria Cátolica del Sur, San Juan de Pasto, Colombia Received: August 29, 2019; Approved: August 5, 2020 Keywords: Dehydration; Infant; Hypernatremia; Breast Feeding Abstract The hypernatremic neonatal dehydration is a severe condition whose incidence has increased in recent years resulting in complications leading to the hospitalization of the newborn. Objective: Describe the clinical and laboratory characteristics of term-newborns with Hypernatremic Dehy- dration diagnosis. Patients and Method: Descriptive observational study of hospitalized term- newborns due to hypernatremic dehydration between a period from 2014 to 2016. Term newborns over 37 weeks with clinical signs of dehydration (dry mucous membranes, depressed fontanel, tear- less crying, signs of the cutaneous pleat), and/or excessive weight loss greater than 7% and serum sodium greater than 145 mEq/L were included. Sociodemographic and biochemical variables were recorded for analysis. Results: 43 neonates were included. 60.5 percent of their mothers were pri- miparous, 90 percent of neonates received exclusive breastfeeding, mothers reported breastfeeding problems in 76.7 percent. Incoming neonates reported weight loss compared to birth weight at 15.3% on average. 83.3% had public health insurance. 65.1% had dehydration clinical signs at What do we know about the subject matter of this study? Neonatal hypernatremic dehydration, an increasing condition cau- sing admission to neonatal intensive care units, is suspected when there is abnormal weight loss > 10%, irritability, hyperthermia, jaundice, and can lead to kidney failure or central nervous system bleeding. What does this study contribute to what is already known? This study identified clinical variables that can help health profes- sionals timely identify risk factors, take preventive and treatment actions, and avoid complications and fatal outcomes.