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Effect of Nutritional Intake on the Body Composition of HIV-Exposed and HIV-Unexposed Preterm and Low Birth Weight Infants.

Breastfeeding Medicine 2019 Februrary 5
BACKGROUND: Human breast milk (HBM) is considered inadequate in meeting protein requirements, especially for very low birth weight (VLBW) infants, which could affect body composition.

OBJECTIVES: The primary objective was to determine the effect of HBM on body composition of HIV-exposed and unexposed preterm VLBW and extremely low birth weight infants. The secondary objectives were to ascertain the effect breast milk fortification and days nil per os (NPO) have on body composition.

MATERIALS AND METHODS: A descriptive cross-sectional study was conducted. Preterm infants with a birth weight of ≤1,200 g were included. Infant nutritional intakes and body composition measurements were recorded during the 28-day follow-up period.

RESULTS: One hundred ten of 113 preterm infants received HBM and 91 infants received fortified HBM. HIV-exposed and unexposed infants receiving fortified HBM displayed differences in fat mass percentage (FM%) (0.88% versus 1.36%, p = 0.01; 0.97% versus 1.49%, p = 0.03) and fat-free mass percentage (FFM%) (98.98% versus 98.68%, p = 0.03; 99.02% versus 98.49%, p = 0.02) on days 21 and 28, respectively. Infants kept NPO displayed differences in FM% on days 7, 21, and 28 (0.9% versus 1.3%, p = 0.03; 0.99% versus 1.4%, p = 0.02; and 0.9% versus 1.6%, p = 0.0004) as well as differences in FFM% (99.1% versus 98.4%; p = 0.0005) on day 28 of life.

CONCLUSION: There were no significant differences in the body composition of infants who received HBM versus fortified HBM. However, significant differences in body composition were reported between HIV exposure groups for infants who received fortified HBM. Infants who were kept NPO were generally smaller, shorter, and had lower FM% and more FFM%.

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