Bone mineralization status measured by dual energy radiographic densitometry in preterm infants fed commercial formulas
Metadatos
Afficher la notice complèteAuteur
Narbona López, Eduardo; Maldonado Lozano, José; Ocete Hita, Esther; Gil Hernández, Ángel; Molina Font, Juan AntonioEditorial
Elsevier
Materia
Prematuros
Date
1998Résumé
We have studied the effect of two preterm commercial infant formulas with different calcium
and phosphorus contents on the mineral balance and bone mineralization of 30 preterm infants
at 1 month of age. Bone mineralization was measured by dual energy X-ray densitometry. The
formula supplying a higher content of calcium and phosphorus promoted higher mineral
retention (P , 0.01) as well as higher bone mineral content (1.556 vs. 1.073 g, P , 0.01) and
2
bone mineral density (0.458 vs. 0.424 g / cm , P , 0.05), approaching values of the control
group, which comprised a cohort of 15 preterm newborns whose gestational age was 4 weeks
older than the subjects selected to be fed with the formulas. The intake of calcium correlated
with retention (r 5 0.69); the phosphorus intake also correlated with phosphorus retention
(r 5 0.95). Intakes of calcium and phosphorus correlated with the bone mineral content
(r 5 0.65) and with bone mineral density (r 5 0.49). We conclude that formulas for preterm
infants should not have a calcium content lower than 120 mg / 100 kcal and should have a
calcium / phosphorus ratio of about 2 to promote adequate bone mineralization.