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  • Title: Calcium metabolism in children during long-term total parenteral nutrition: the influence of calcium, phosphorus, and vitamin D intakes.
    Author: Larchet M, Garabédian M, Bourdeau A, Gorski AM, Goulet O, Ricour C.
    Journal: J Pediatr Gastroenterol Nutr; 1991 Nov; 13(4):367-75. PubMed ID: 1779310.
    Abstract:
    Hypercalciuria and bone disease are frequently associated with total parenteral nutrition (TPN) in children and adults. The aim of this study was to assess the influence of calcium, phosphorus, and vitamin D intakes on hypercalciuria. We observed seven children aged 4-13 years receiving home cyclic TPN for 4 consecutive years. Calcium and phosphorus intakes, constant during the 1st year, were reduced during the last 3 years to 50 and 30% of the initial intakes, and vitamin D was stopped during the 3rd and the 4th years. All children had hypercalciuria and one of them had acute painful osteopenia and nephrocalcinosis at the beginning of the study. Hypercalciuria was corrected and painful bone disease did not occur during the three following years, with TPN daily intakes of calcium, 0.35 mmol/kg, and phosphorus, 0.70 mmol/kg. Cessation of vitamin D administration during 48 months led to no further decrease in calciuria nor to the occurrence of clinical or biological signs of vitamin D deficiency. However, we hypothesize that excessive vitamin D intake may have facilitated the occurrence of the TPN-related bone disease in one patient and should be avoided. The possible role of parenteral aluminum loading is also discussed.
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