Objective:To assess the association between delayed fusion of the amniotic and chorion diagnosed at 16 weeks of gestation and maternal-fetal outcomes.Methods:This prospective cohort study was conducted at Tianjin Cent...Objective:To assess the association between delayed fusion of the amniotic and chorion diagnosed at 16 weeks of gestation and maternal-fetal outcomes.Methods:This prospective cohort study was conducted at Tianjin Central Hospital of Gynaecology Obsterics,China,from February 2022 to March 2024.A total of 331 singleton pregnant women with low risk of fetal chromosomal abnormalities were enrolled.Ultrasound examinations at 16 weeks’gestation identified cases of delayed fusion of amnion and chorion.Maternal and fetal outcomes were compared between the delayed fusion group and the timely fusion group.Results:Delayed fusion occurred in 28.00%(91/325)of cases.Post-delivery fetal membrane histopathology revealed no structural abnormalities attributable to delayed fusion.No significant differences were observed in maternal complications(gestational diabetes mellitus,hypertensive disorders,obesity,anemia)and 5-minute Apgar scores between groups.In addition,miscarriage rates were unaffected by delayed fusion.Notably,the delayed fusion group had a significantly higher incidence of preterm births(8.79%(8/91)vs.2.56%(6/234),P=0.028).After adjustment for confounders,infants in the delayed fusion group had a significantly lower mean birth weight(172.05 g less)than those in the timely fusion group.Conclusion:Delayed fusion at 16 weeks did not alter fetal membrane structure after delivery and was not associated with most maternal or neonatal complications in this cohort.However,it may be an independent risk factor for preterm birth and reduced birth weight,warranting further investigation.展开更多
基金sponsored by Tianjin Health Research Project(Grant No.2023007 to JSC and Grant No.TJWJ2023MS030 to LZ)Natural Science Foundation of Tianjin(Grant No.21JCYBJC00100 to JSC).
文摘Objective:To assess the association between delayed fusion of the amniotic and chorion diagnosed at 16 weeks of gestation and maternal-fetal outcomes.Methods:This prospective cohort study was conducted at Tianjin Central Hospital of Gynaecology Obsterics,China,from February 2022 to March 2024.A total of 331 singleton pregnant women with low risk of fetal chromosomal abnormalities were enrolled.Ultrasound examinations at 16 weeks’gestation identified cases of delayed fusion of amnion and chorion.Maternal and fetal outcomes were compared between the delayed fusion group and the timely fusion group.Results:Delayed fusion occurred in 28.00%(91/325)of cases.Post-delivery fetal membrane histopathology revealed no structural abnormalities attributable to delayed fusion.No significant differences were observed in maternal complications(gestational diabetes mellitus,hypertensive disorders,obesity,anemia)and 5-minute Apgar scores between groups.In addition,miscarriage rates were unaffected by delayed fusion.Notably,the delayed fusion group had a significantly higher incidence of preterm births(8.79%(8/91)vs.2.56%(6/234),P=0.028).After adjustment for confounders,infants in the delayed fusion group had a significantly lower mean birth weight(172.05 g less)than those in the timely fusion group.Conclusion:Delayed fusion at 16 weeks did not alter fetal membrane structure after delivery and was not associated with most maternal or neonatal complications in this cohort.However,it may be an independent risk factor for preterm birth and reduced birth weight,warranting further investigation.
