[Restricted intake of sodium in newborn infants with very low birth weight in the first days of life].
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.
Centeno Monterrubio
C
C
Unidad Neonatal, Hospital Infantil de Cruces y Facultad de Medicina, Universidad del País Vasco, Bilbao.
Galdeano Miranda
J M
JM
Cerero Bejarano
J
J
Mendía Gutiérrez
I
I
Saracho Arbaiza
R
R
Ordóñez Escudero
R
R
Valls i Soler
A
A
Rodríguez Soriano
J
J
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
D012964:Sodium
Aporte restringido de sodio en el recién nacido de muy bajo peso en los primeros días de vida.