[Establishment of a predictive nomogram model for predicting the death of very preterm infants during hospitalization].

Objectives: To establish a nomogram model for predicting the risk of death of very preterm infants during hospitalization.

Methods: A retrospective analysis was performed on the medical data of 1 714 very preterm infants who were admitted to the Department of Neonatology, the Third Affiliated Hospital of Zhengzhou University, from January 2015 to December 2019. These infants were randomly divided into a training cohort (1 179 infants) and a validation cohort (535 infants) at a ratio of 7∶3.

[Clinical features of very preterm infants with prelabor rupture of membranes and predictive factors for major adverse outcomes].

Objective: To study the clinical features of very preterm infants with prelabor rupture of membranes (PROM) and predictive factors for early-onset sepsis (EOS) and death.

Methods: A retrospective analysis was performed for the clinical data of the very preterm infants with PROM (with a gestational age of < 32 weeks) who were admitted to the neonatal intensive care unit from January 2018 to May 2020. According to the time from membrane rupture to delivery, the infants were divided into four groups: < 18 hours (=107), 18 hours to < 3 days (=111), 3 days to < 14 days (=144), and ≥ 14 days (=37).