Abstract
The Ca, P, Zn, and Cu content of PTHM was determined on cross-sectional and longitudinal samples of PTHM collected on days 1-2, 4±1, 7±1, 14±2, 28±2, 42±2, 56±2, and 70±2 of lactation from 74 women who delivered at or before 34 wks of gestation. Ca, Zn, and Cu were analyzed by atomic absorption spectroscopy. P was analyzed by the spectrophotometric method of Bartlett. The findings are displayed in the Table. Changes in content over time were tested by analysis of variance. Zn content decreased significantly with duration of lactation. The content of Ca, P, and Cu increased slightly during the early days of lactation, but then decreased slightly with the duration of lactation. Comparing these data with the estimated third trimester intrauterine accretion rates for these 4 minerals suggests that although the Zn content of PTHM might meet those rates, the content of Ca, P, and Cu does not.
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Ehrenkranz, R., Ackerman, B. & Nelli, C. CALCIUM (Ca), PHOSPHORUS (P), ZINC (Zn), AND COPPER (Cu) CONTENT OF PRETERM HUMAN MILK (PTHM). Pediatr Res 18 (Suppl 4), 195 (1984). https://doi.org/10.1203/00006450-198404001-00613
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DOI: https://doi.org/10.1203/00006450-198404001-00613