Targeted Protein Fortification in Extremely Low Birth Weight Preterm Infants

While new innovations in the care of extremely premature infants have led to decreased morbidity and mortality, poor postnatal growth remains as a major challenge. Early growth in the postnatal period influences neurodevelopmental and growth outcomes. This proposed study will challenge current nutritional regimens for infants \< 1000 g birth weight (BW) by providing an exclusive human milk based diet with a higher amount of protein based on individual caloric and protein analysis of human milk utilizing targeted fortification. The investigators will evaluate the effects of a high versus standard protein enteral diet on growth and body composition in infants \< 1000 g BW. There are no published studies evaluating the effect of an exclusive human milk protein diet on body composition in premature infants. Research has shown that infants who receive this diet achieve growth at targeted standards but body composition has not been evaluated. As an all human milk diet is well tolerated and associated with improved outcomes in the highest risk neonates, it is imperative to evaluate the benefits of a high protein exclusive human milk diet and the possible positive changes in body composition, specifically lean mass, in these infants. Results from this proposed study will immediately influence current nutritional practices and will provide landmark information regarding targeted fortification with provision of adequate protein providing the most optimal body composition in the most fragile and vulnerable infants.