Natremia of healthy term newborns at 48 h of life: influence of feeding patterns.
Clin Biochem
; 39(10): 992-6, 2006 Oct.
Article
en En
| MEDLINE
| ID: mdl-16979614
ABSTRACT
OBJECTIVES:
To describe natremia in healthy term newborns and determine whether there is a relationship between blood sodium and feeding patterns.METHODS:
All normal newborns, admitted to the nursery between January and March 2004 were eligible for this prospective cohort study. Inclusion criteria were > or =37 weeks of gestational age, birth weight > or =2500 g, Apgar scores > or =7 at 5 and 10 min and normal physical examination. A capillary blood sample was taken at 48+/-12 h of life.RESULTS:
Blood samples from 126 newborns were analyzed. Mean gestational age was 39.6 weeks, birth weight was 3414 g and weight loss at 48 h of life was 6.5% of birth weight. Mean capillary blood sodium was 141 mmol/L (SD 3.4). Exclusively, breast-fed newborns had statistically higher mean blood sodium (141 mmol/L, SD 3.0) than the non-exclusively breast-fed+formula fed group (139 mmol /L, SD 3.7). There was a significant linear association between blood sodium and the quantity of milk supplements received as well as between blood sodium and weight loss.CONCLUSIONS:
Most newborns have blood sodium values within a narrower range than previously described in the literature. We also demonstrate that the exclusively breast-fed infants appear to have marginally but statistically higher values of blood sodium than non-exclusively breast-fed and formula-fed infants.
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Base de datos:
MEDLINE
Asunto principal:
Sodio
/
Recién Nacido
/
Conducta Alimentaria
Tipo de estudio:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Humans
Idioma:
En
Revista:
Clin Biochem
Año:
2006
Tipo del documento:
Article
País de afiliación:
Canadá