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Revista chilena de pediatría

versión impresa ISSN 0370-4106

Resumen

MARDONES S., Francisco et al. Composición corporal de neonatos con alteraciones en el crecimiento fetal. Rev. chil. pediatr. [online]. 1999, vol.70, n.4, pp.300-305. ISSN 0370-4106.  http://dx.doi.org/10.4067/S0370-41061999000400006.

To study the association between body composition of newborn infants, birthweight and altered foetal growth. The lean body mass and fat of 224 newbom infants in low-income families in Santiago, Chile were measured using the anthropometric method of Dauncey. In healthy children the proportion of fat was 16.5%. There was a significant positive association of birthweight with lean body mass (r2 = 88.9%) and with fat content (r2 = 58.2%). Although the fat content constitutes only 16.5% of the birthweight, it explains a great portion of the variation in body weight (58.2%). In the neonates with retarded foetal growth or with low birthweight it was found a different body composition. These neonates had absolute values inferior in terms of both lean body mass and fat content, but only in fat content were they proportionally less than normal neonates or those with obesity. The nutritional deficit of these infants is associated with a bigger risk of perinatal disease, which should be prevented with an adequate alimentation of the mother during pregnancy. The results obtained similar lo previous studies in developed countries, suggest that the estimation of body composition could be useful to evaluate foetal growth at the time of birth

Palabras clave : body composition of the neonate; lean body mass; fat content; birthweight.

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