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Enteral nutrition for patients with cystic fibrosis: comparison of a semi-elemental and nonelemental formula

, : Enteral nutrition for patients with cystic fibrosis: comparison of a semi-elemental and nonelemental formula. Journal of Pediatrics 132(2): 265-269

Objective: To determine whether differences in tolerance and absorption of fat and nitrogen exist between a semi-elemental nutritional formula without enzyme replacement and a nonelemental formula with enzyme replacement. Study design: Sixteen patients (eight girls and eight boys) with cystic fibrosis, 4 to 20 years of age (12 +- 1.3, mean +- SEM), who were pancreatic insufficient completed two 6-day regimens of nocturnal continuous enteral feedings offered in random order. Forty-four percent of the total daily energy was consumed as enteral tube feedings, and the remaining oral dietary intake remained constant throughout the study. Seventy-two-hour fecal collections from each study period were analyzed for total fat, long-chain fatty acids (LCFAs), medium-chain fatty acids (MCFAs), and nitrogen. Results: Fat absorption was 80.2% +- 2.9% and 82.3% +- 3.1% (p = 0.58) for the semi-elemental and nonelemental formulas, respectively. Similarly, the coefficient of absorption of LCFAs was 69.5% +- 4.5% and 79.6% +- 3.4% (p = 0.30) for the semi-elemental and nonelemental formulas. Malabsorption of MCFAs contributed minimally to total fat malabsorption. There was no difference between formulas for MCFA or for nitrogen absorption, 83.7% +- 1.9% and 87.4% +- 1.4%, p = 0.48. All patients tolerated all feelings, and weight gained was 1.8 +- 0.3 kg with no difference in weight gain between the trials. Conclusion: A nonelemental formula, with enzyme replacement, is absorbed as well as a predigested formula in patients with CF who are pancreatic insufficient.


PMID: 9506639

DOI: 10.1016/s0022-3476(98)70443-3

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