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- W2031033456 abstract "Objective: The aim of the study was to evaluate the relation between nutritional intake (kilocalories, protein) and weight and length growth in preterm infants, and to describe their metabolic tolerance with a focus on those with high protein intake (≥4.6 g · kg−1 · day−1). Methods: Secondary analysis of data from appropriate-for-gestational age preterm infants in a 28-day randomized clinical trial that evaluated growth, tolerance, and safety of a new ultraconcentrated liquid human milk fortifier (original study n = 150). This subset of 56 infants had complete growth and nutrition data and met criteria for the original study's “efficacy analysis” (eg, >80% of kilocalorie intake from study diet). Nutritional intake was estimated, not actual. Regressions were used to test cumulative kilocalories and protein as the predictors of 28-day change in weight and length z scores (growth status), and to evaluate protein tolerance. Results: Average intake was 118 ± 8 kcal · kg−1 · day−1 and 4.3 ± 0.4 g protein · kg−1 · day−1, with 16 ± 3 g · kg−1 · day−1 and 1.1 ± 0.2 cm/week growth for 28 days. Cumulative total kilocalories and protein were significant predictors of improved length z score (P = 0.0054, 0.0005) but not weight z score change. Regression models indicated that protein not kilocalories explained the improvement in length z score, with protein explaining 19% of the variability. The high protein group averaged 4.6 to 5.5 g · kg−1 · day−1 (n = 16). Protein tolerance was adequate for all of the study infants based on metabolic measures (blood urea nitrogen, serum carbon dioxide, pH). Conclusions: Higher cumulative protein intake was tolerated and overall lessened the commonly occurring decline in the length but not weight growth status in a 28-day study of preterm infants." @default.
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- W2031033456 date "2014-04-01" @default.
- W2031033456 modified "2023-10-16" @default.
- W2031033456 title "Higher Protein Intake Improves Length, Not Weight, z Scores in Preterm Infants" @default.
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- W2031033456 doi "https://doi.org/10.1097/mpg.0000000000000237" @default.
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