[Interpretation of the 2023 "Guidelines for parenteral nutrition in preterm infants: the American Society for Parenteral and Enteral Nutrition"].

The "Guidelines for parenteral nutrition in preterm infants: the American Society for parenteral and enteral nutrition" were developed by the American Society for Parenteral and Enteral Nutrition and published in the <i>Journal of Parenteral and Enteral Nutrition</i> in September 2023. The guidelines provide recommendations on 12 key clinical questions regarding parenteral nutrition (PN) for preterm infants. In comparison to similar guidelines, this set offers more detailed perspectives on PN for preterm infants. It presents evidence-based recommendations for the commencement time, nutrient dosage, and composition of PN, considering primary outcomes such as growth and development, as well as secondary outcomes like sepsis, retinopathy of prematurity, parenteral nutrition-related liver disease, and jaundice. This article aims to interpret the guidelines to provide a reference for colleagues in the field.