• Annals of medicine · Dec 2021

    Uterine dehiscence in pregnant with previous caesarean delivery.

    • Zhengfeng Zhu, HeZhou Li, and JunQing Zhang.
    • Ultrasonic Department, Zhengzhou University Third Hospital and Henan Province Women and Children's Hospital, Zhengzhou, China.
    • Ann. Med. 2021 Dec 1; 53 (1): 126512691265-1269.

    BackgroundThe main risk factor for uterine scar dehiscence is a previous caesarean section. Better characterisation of the ultrasonographic features of uterine scar dehiscence may improve preoperative diagnostic accuracy in pregnant women with a caesarean scar. This study aimed to evaluate the ultrasonographic features of uterine scar dehiscence in pregnant women and maternal and neonatal outcomes.Materials And MethodsThis was a retrospective review of the records of 23 women with a previous caesarean section found to have uterine scar dehiscence during surgery. The integrity and thickness of the lower uterine segment were recorded, ultrasonographic features were evaluated, and maternal and infant outcomes were analysed.ResultsOf the 23 cases of uterine scar dehiscence, six were detected by preoperative ultrasonography, while 17 were missed. The ultrasonographic features of the 23 cases of uterine dehiscence included anechoic areas protruding through the caesarean section scar with an intact serosal layer (4/23), disappearance of the muscular layer (2/23), and a thinner lower uterine segment (17/23). There were no cases of maternal or neonatal mortality. One woman chose to undergo pregnancy termination.ConclusionPreoperative detection of uterine scar dehiscence in women with previous caesarean delivery helps prevent maternal and neonatal morbidity and mortality. However, the maximum benefit can only be obtained by scanning at appropriate intervals during pregnancy and accurate recognition of the ultrasonographic features of uterine scar dehiscence.KEY MESSAGESPreoperative detection of uterine scar dehiscence in women with previous caesarean delivery helps prevent maternal and neonatal morbidity and mortality.Scanning at appropriate intervals during pregnancy and accurate recognition of the ultrasonographic features of uterine scar dehiscence could be beneficial.Even when uterine dehiscence is detected by ultrasound during the second trimester, conservative management via strict observation alone is also feasible.

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