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Abstract Objective The identification of risk factors is crucial for the clinical prevention and diagnosis of necrotizing enterocolitis (NEC). Monochorionic twins (MCT), due to the high genetic homogeneity, provided a valuable model for investigating the risk factors of various diseases. This study aimed to explore the risk factors for NEC using MCT. Methods A retrospective review was conducted on the medical records of monochorionic twins (MCT) treated at Guangzhou Women and Children’s Medical Center from January 2012 to March 2023. We compared perinatal condition, feeding and preceding condition between MCT pairs with NEC (NEC MCT) and without NEC(No NEC MCT).Logistic regression analysis was utilized to identify independent risk factors. Result In 85 pairs of monochorionic twins (MCT), NEC occurred in one twin in 78.8% of cases, whereas both twins were affected in 21.2% of cases. In the final cohort of 60 pairs of MCT, several parameters were found to differ significantly between NEC MCT group and No NEC MCT group. Compared to No NEC MCT group, the incidence of umbilical cord abnormalities was significantly higher in the NEC MCT group (25% vs. 8.3%, P = 0.014). Meanwhile, NEC MCT group showed higher prevalence of SGA infants (48.3% vs. 21.7%, P = 0.002) and sFGR (38.3% vs. 6.7%, P = 0.000). Furthermore, TTTs (13.3% vs. 3.3%, P = 0.027) and septicemia (25% vs. 5%, P = 0.002) were more common in NEC MCT group. In a multivariable logistic regression model, sFGR (OR 6.81,95%CI 2.1–21.9, p = 0.001) was eventually output as an independent risk factor. Conclusion Non-genetic factors play a predominant role in the pathogenesis of NEC. Umbilical cord abnormalities, SGA, sFGR, TTTs and septicemia significantly increase the risk of NEC. sFGR is an independent risk factor of NEC. |
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