To explore the use of parenteral nutrition solution for preterm infants, and to evaluate the efficacy of parenteral nutrition by growth rate, so as to provide reference for promoting the growth and development of preterm infants.

The method of retrospective study was used to analyze the rationality of parenteral nutrition prescription for preterm infants, including calorie, calorie/nitrogen ratio, sugar/fat ratio, treatment course, etc. And the effect was evaluated by calculating the average growth rate.

A total of 435 clinical records of preterm infants were collected. In 12.9% of the prescriptions, calories were more than 100 kcal·kg^-1·d^-1, calories were less than 80 kcal·kg^-1·d^-1 in 7.1% of the prescriptions. There was a phenomenon of excess or insufficient calorie supply. The proportion of calorie/nitrogen ratio >200 accounted for 20.0%, suggesting that amino acid supplementation was insufficient. In 44.8% of the prescriptions, the sugar/fat ratio was >3:1, indicating that the ratio of fat emulsion was too low. The average daily growth rate was (20.99±9.27) g/d, with 61.8% of slower growth rate.

The total energy, calorie/nitrogen ratio, sugar/fat ratio are unreasonable in some parenteral nutrition prescriptions of our hospital. The growth and development rate of some premature infants is slow. It is necessary to strengthen the examination of the parenteral nutrition prescriptions for premature infants and make a reasonable nutrition scheme.

Preterm infant; Parenteral nutrition; Efficacy