title: [Restricted intake of sodium in newborn infants with very low birth weight in the first days of life].
abstract: A prospective study on the amount of sodium administered in the first five days of life in a group of 18 low-birth-weight infants is presented. Their mean birth weight, and gestational age were 1.150 gm., and 28.8 weeks. Patients were cared for in radiant warmers, and protected with a plastic blanket. Minimum amount of sodium necessary to maintain a normal plasma sodium concentration was given. Mean daily sodium and free water given was 0.96 mEq/kg/day, and 108.4 ml/kg/day, respectively. In day 5, there was a mean accumulated body weight loss of ten per cent. This group of patients were compared with a similar group in whom plastic blanket was not used, and who received a sodium intake of 1.5 mEq/kg/day. In this latter group of patients there was a higher incidence of hypernatremia (p less than 0.005). The incidence of hyponatremia was similar in both groups. Daily sodium intake might be very low, in infants of very-low-birth-weight if a negative weight balance is allowed in the first days of life.
authors.affiliation: Unidad Neonatal, Hospital Infantil de Cruces y Facultad de Medicina, Universidad del País Vasco, Bilbao.
authors.forename: C
authors.initials: C
authors.lastname: Centeno Monterrubio
authors.forename: J M
authors.initials: JM
authors.lastname: Galdeano Miranda
authors.forename: J
authors.initials: J
authors.lastname: Cerero Bejarano
authors.forename: I
authors.initials: I
authors.lastname: Mendía Gutiérrez
authors.forename: R
authors.initials: R
authors.lastname: Saracho Arbaiza
authors.forename: R
authors.initials: R
authors.lastname: Ordóñez Escudero
authors.forename: A
authors.initials: A
authors.lastname: Valls i Soler
authors.forename: J
authors.initials: J
authors.lastname: Rodríguez Soriano
mesh_terms: D004326:Drinking; D006801:Humans; D006955:Hypernatremia / Q000209:etiology; D007010:Hyponatremia / Q000209:etiology; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007234:Infant, Premature; D011446:Prospective Studies; D012964:Sodium / Q000008:administration & dosage* / Q000097:blood; D015431:Weight Loss
chemical_list: D012964:Sodium
vernacular_title: Aporte restringido de sodio en el recién nacido de muy bajo peso en los primeros días de vida.