Composición de leche materna en madres de recién nacidos de pre-termino menor a 33 semanas
Marcela Pizarro ⁽¹⁾, Patricia Mena⁽²⁾, Andrés Bodini⁽³⁾.
1. Residente de Pediatría, División de Pediatría, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago de Chile.
2. Unidad de Neonatología, Hospital Sotero del Rio, Profesor Asistente Adjunto, División de Pediatría. Pontificia Universidad Católica de Chile, Santiago de Chile
3. Dirección de investigación, Universidad La Serena, Chile

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Introduction: Breast milk is recommended as the most suitable food in the first year of life, as it provides the substrates required for growth of the newborn. In recent years it has expanded the study of the composition of breast milk and their relationship on the effect of nutrition in preterm infants.

Objective: To investigate the macronutrient composition of breast milk in preterm infants (<33 weeks).

Methods: Analysis of protein, carbohydrates and lipids in breast milk samples from preterm (<33 weeks) collected longitudinally, according study protocol.

Results: We present variability in samples collected in three consecutive weeks of postnatal age, giving protein content ranged from 1.34 g / dl (SD ± 0.11) to 1.05 g / dl (SD ± 0.10) with (p < 0.05). Carbon hydrates 6.20 g / dl (SD ± 0.17) to 6.77 g / dl (SD ± 0.22) with (p <0.05). Fat of 4.10 g / dl (SD ± 0.39) to 4.33 g / dl (SD ± 0.26) with (p = 0.075).

Discussion: These data provide a more detailed picture of the nutrient intake of preterm infants fed breast milk.

Key Words:  human milk; macronutrient; preterm infant.