Abstract

IntroductionTo delineate obstetric complications and neonatal outcomes by maternal age in singleton pregnancies with previous caesarean section (CS). MethodsA retrospective study involved 7715 singleton gestations with previous CS was conducted in a single centre. Statistical methods were used to describe and analyse the incidence of various complications and adverse outcomes classified by maternal ages. After selecting the reference group (30–34 years), multivariate logistic-binomial regression model was used to investigate the outcomes using SPSS. ResultsFrom 2013 to 2017, the proportion of advanced maternal age (AMA, ≥35 years) women with a history of CS increased yearly, especially in the 35–39 years age group. AMA women accounted for 39.4% of all pregnancies and has a high incidence of in vitro fertilization(IVF), progesterone therapy in early pregnancy, pregnancy-induced hypertension (PIH), gestational diabetes mellitus (GDM), placenta previa, premature rupture of membranes (PROM) and postpartum haemorrhage (PPH). Compared to the 30–34 years group, the risks of PIH, GDM, placenta previa, PROM and PPH increased in AMA pregnancies. Very advanced age (≥40 years) may be associated with placenta accreta while young mothers (20–24 years) have a higher prevalence of premature birth. Vaginal bleeding during pregnancy is a risk factor for maternal complications, maternal and neonatal morbidity. DiscussionAMA is associated with increased risk of PIH, GDM, placenta previa, PROM and PPH. Vaginal bleeding may be a predictor during pregnancy.

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