Introduction
weight gain
VERY LOW BIRTH WEIGHT INFANT, COMPLICATIONS, RETINA
Very preterm infants (VPI) with gestational age (GA) < 32 weeks or very low birth weight infants (VLBWI) with birth weight (BW) < 1500 g in the neonatal intensive care unit (NICU) are completely or partially dependent on parenteral nutrition (PN) in the early postnatal period to meet the nutrient and energy requirements of growth due to the presence of an immature digestive system. Early active PN is known to improve the survival rate and prognosis of VPI or VLBWI. Intravenous lipid emulsions (ILE) are considered a standard and essential component of PN. ILE ensures proper weight gain in premature infants, provides essential fatty acids and energy, promotes the development of brain nerves and retina, reduces the related complications of premature infants, and improves the success rate of rescue [In the 1960s, Professor Wretlind of Sweden developed a fat emulsion based on soybean oil [