Abstract
BackgroundInvestigating the trend of changes in the occurrence of necrotizing enterocolitis (NEC) in preterm infants during 9 years and analyzing the risk factors of NEC with the purpose of providing reference for clinical diagnosis and treatment of NEC.MethodsClinical data of NEC in preterm infants with Bell’s stage ≥ II from January 2013 to December 2021 in the Neonatology Department of the Third Affiliated Hospital of Zunyi Medical University was retrospectively analyzed. Trends in the occurrence of NEC in preterm infants were analyzed by the trend chi-square test. Subsequently, the general data (sex, gestational age, singleton or multiple births, birth weight, serum albumin, alkaline phosphatase, sepsis, blood transfusion, mechanical ventilation, RDS, arterial catheterization) and perinatal data (intrauterine distress, turbid amniotic fluid, premature rupture of membranes, mode of delivery, fetal heart abnormalities, diabetes mellitus) were collected; then, the risk factors for NEC were analyzed by univariate and multivariate logistic-regression analysis.ResultsIn the past 9 years, 77 cases of NEC occurred, with the incidence rate of 1.95%, and the incidence of NEC in preterm infants has been increasing year by year (P < 0.05). The results of univariate analysis showed that the morbidity of NEC in preterm infants was associated with premature rupture of membranes, blood transfusion, sepsis, and the of serum albumin (P < 0.05). Multivariate logistic regression analysis revealed that blood transfusion (OR = 2.232, 95% CI: 1.012–4.923) and sepsis (OR = 0.899, 95% CI: 0.809–3.915) were independent risk factors of NEC in preterm infants, while high serum albumin (OR = 0.899, 95% CI: 0.809–3.915) was an independent protective factor of NEC in preterm infants.ConclusionThe morbidity of NEC is gradually increasing. Inhibition of infection and limitation of blood transfusion are effective measures to reduce the occurrence of NEC. Meanwhile, high serum albumin is a protective factor for NEC.
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