ISSN:
1436-6215
Keywords:
Key words Premature infants – magnesium – balance studies – human milk – formula
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Medicine
Notes:
Summary Background: The knowledge of magnesium requirements of premature infants is still very limited, although it is essential for the optimal composition of suitable formulas. Aim of the study: The study concept was 1) to assess physiological magnesium balance data of healthy term infants and longitudinal results from formula-fed premature infants and 2) to deduce conclusions on the magnesium content of the formulas. Methods: Premature infants (n = 14, birth weight ≤ 1500 g, gestational age ≤ 32 weeks) were studied in conventional balance trials with 1) a semi-elemental diet (A), 2) preterm infant formula (B), and 3) infant formula (C). In addition, healthy term formula-fed (n = 11, D) and breast-fed (n = 14, E) infants were investigated. Analysis was performed by flame atomic absorption spectroscopy. Results: The median magnesium intake ranged between 4.84 mg/kg × d−1 (breast-fed infants) and 16.33 mg/kg × d−1 (premature infants). The term breast-fed infants retained nearly as much magnesium as term formula-fed infants (3.37 vs. 3.97 mg/kg × d−1), due to a low percental fecal and urinary excretion. A higher magnesium retention was observed in the premature group: A: 7.97 mg/kg × d−1, B. 5.3 mg/kg × d−1, 3.) 5.54 mg/kg × d−1. Conclusion: In view of the high percental magnesium retention in formula-fed premature infants, excessive supply should be avoided. The long-term effects of lower intakes have to be monitored.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003940050069
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