[Parenteral nutrition in premature babies with a birth weight <1500g: a systematic single-center analysis and comparison with current guidelines].

Background: Parenteral and enteral nutrition are essential for both growth and development of preterm infants. Based on the results of many studies, the rate of nutritional growth and the amount of substrate delivered parenterally are under debate.

Objective: The main aim of this study was to assess parenteral nutrition in very and extremely immature preterm infants, i.