Protein and calorie intake, nitrogen losses, and nitrogen balance in children undergoing chronic peritoneal dialysis.

A. Canepa, F. Perfumo, A. Carrea, S. Menoni, E. Verrina, A. Trivelli, P. Delucchi, R. Gusmano

Research output: Contribution to journalArticle

Abstract

We performed 22 nitrogen balance (NB) studies of three days' duration in 19 children (8.7 +/- 3.8 years) on chronic peritoneal dialysis (CPD) for 19.4 +/- 16.4 months. The dietary intakes were assessed by the double weighing method. Total nitrogen, protein, urea, and creatinine were analyzed in the dialysate and urine collected daily. Total nitrogen was also determined in the feces collected over the whole NB study period, using vegetable charcoal as a marker. The protein intake was 1.64 +/- 0.50 g/kg/day, corresponding to 126 +/- 40% of the recommended daily allowance (RDA) for normal children of the same age, and the calorie intake (diet+glucose from dialysate) reached 75 +/- 26% of RDA. Nitrogen losses were: 0.177 +/- 0.052 g/kg/day with peritoneal fluid and urine, and 0.028 +/- 0.018 g/kg/day with feces. The NB, positive in 17 out of 22 studies, ranged from -116 to +167 mg/kg/day (mean 44.0 +/- 66.2 mg/kg/day). A direct and significant correlation between NB and nitrogen intake (g/kg/day) (r = 0.562, p <0.05) and total calorie intake (cal/kg/day) (r = 0.483, p <0.05) has been observed. These data confirm the need to ensure in children on CPD an adequate nutritional intake, and further support the efforts to improve calorie intake.

Original languageEnglish
Pages (from-to)326-329
Number of pages4
JournalAdvances in peritoneal dialysis. Conference on Peritoneal Dialysis
Volume12
Publication statusPublished - 1996

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