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Abstract Objective: To investigate clinical characteristics and pregnancy outcomes of elderly pregnant women. Methods: The data of 3624 pregnant women with single fetus and over 28 gestational weeks were retrospectively analyzed, and were divided into group A (2536 women with less 34 years old), aged group B (950 women with 34-40 years old), and group C (138 women with over 40 years old) according to the different maternal ages from March 2015 to February 2017. The situation of general conditions, prenatal examination, delivery mode, and the rate of pregnant complication, and the neonatal outcomes of pregnant women were compared among the three groups. Results: The incidence rate of postpartum hemorrhage, gestational hypertension, gestational diabetes mellitus, premature rupture of membranes, abruption of membranes, oligohydramnios, placenta previa, and placenta implantation of women in group B and C were significant higher than those of women in group A (P<0.017), but there were no significant different between group B and group C (P>0.017). The incidences of uterine fibroids, anemia, sexually transmitted diseases, and thyroid dysfunction ranking of women in group C were highest, but those in group A were lowest (P<0.017). The vaginal delivery rate of women in group A was highest, but that in group C were lowest (P<0.017). The incidences of fetal distress, macrosomia, fetal growth damage, and preterm birth of women in group B and group C were significant higher than those of women in group A, and rate of macrosomia in group C was significant higher than that of women in group B (P<0.017). There was no significant different in the rate of the neonatal asphyxia among three groups (P>0.017). Conclusion: Elderly pregnant women have higher incidence of gestational complications and poorer pregnancy outcomes, so the maternal examination and health education should be paid more attention to, and diagnosis and treatment of pregnant complications early can improve the pregnancy outcomes.
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