[Supplementation of premature infant nutrition with calcium and phosphor for improving mineral supply of premature and small-for-gestational age newborn infants].
A standard preterm formula was supplemented with calcium (Ca) and phosphorus (P) (F-CaP: Ca 87 mg/dl, P 43 mg/dl) and compared to the non-supplemented form (F: Ca 62 mg/dl, P 36 mg/dl). VLBW and small-for-gestational-age infants (n = 79) were included in the study which was performed to look for adverse effects and to decide about a reasonable start and duration of supplementation. In preterm infants with a birth weight lower than 1500 g and a body weight of more than 2000 g, the additional supplementation with Ca and P lead to a significant higher Ca- and P-retention without further load for the kidney. In addition, preterm infants with a body weight lower than 1500 g also had a better retention of Ca and P. Both, F-CaP and F lead to a high urinary excretion of phosphorus, a high renal net acid excretion and a relatively high activity of serum alkaline phosphatase. Anthropometric measurements did not reveal any evidence for an impaired caloric absorption due to an increased fecal fat excretion. Hypercalcemia or hyperphosphatermia was not seen. Hypercalciuria occurred in less than 5% of the samples studied. The results of this study indicate that a continuation of the supplementation with Ca and P is justified in VLBW infants with a body weight of more than 2000 g. There was no evidence for adverse effects of Ca and P supplementation in VLBW infants with a body weight lower than 1500 g, who might therefore also benefit from supplementation. Further studies are necessary to investigate unsatisfactory metabolic conditions of these children e.g. the high renal load.
Hettrich
B
B
Forschungsinstitut für Kinderenährung, Dortmund.
Kalhoff
H
H
Rudloff
S
S
Diekmann
L
L
Stock
G J
GJ
Manz
F
F
D000886:Anthropometry; D002136:Calcium, Dietary / Q000008:administration & dosage*; D002149:Energy Intake / Q000187:drug effects; D005260:Female; D005527:Food, Fortified; D006801:Humans; D007225:Infant Food; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000178:diet therapy*; D007236:Infant, Small for Gestational Age; D019102:Infant, Very Low Birth Weight; D008297:Male; D009751:Nutritional Requirements; D009753:Nutritive Value; D010758:Phosphorus / Q000008:administration & dosage*
D002136:Calcium, Dietary; D010758:Phosphorus
Anreicherung einer Frühgeborenenmilchnahrung mit Kalzium und Phosphor zur Verbesserung der Mineralstoffversorgung Früh- und Mangelgeborener.