妊娠晚期女性盆膈裂孔的超声影像学表现

摘要

目的 应用经会阴盆底三维超声观察妊娠晚期女性盆膈裂孔的形态及结构声像图特征.方法 对25例正常未育女性及50例晚孕女性进行经会阴盆底三维超声检查,比较观察两组女性盆膈裂孔形态及结构的声像图的差异.结果 晚孕组与正常组相比,盆膈裂孔形态趋圆,位置偏移；耻骨直肠肌走行弯曲,可发生撕脱；盆底结缔组织疏松；阴道形态异常；盆底器官可发生轻度脱垂.结论 与正常未育女性相比,妊娠晚期女性盆膈裂孔的形态及结构发生改变,裂孔趋向松弛.盆底三维超声是一种有效的观察妊娠期女性盆膈裂孔形态结构的影像学方法.%Objective To observe the morphology and structure of the urogenital hiatus in late pregnancy women using transperineal three-dimensional (3D) pelvic floor ultrasonography.Methods Twenty five nulliparas and fifty late pregnancy women were examined by transperineal 3D pelvic floor ultrasonography.The images of urogenital hiatus were obtained and compared to study their differences between nulliparas and late pregnancy women.Results Compared to nulliparas,urogenital hiatus in late pregnancy women tended to be circular and with an offset position.The puborectalis were bended and could be avulsed.Pelvic floor connective tissue could be loose.The morphology of vaginal might be abnormal and pelvic organ might prolapsed slightly.Conclusions The morphology and structure of urogenital hiatus in late pregnancy women are different to those in nulliparas,the hiatus tend to be slackness.3D pelvic floor ultrasonography is an effective imaging method to observe the morphology and structure of urogenital hiatus in pregnancy women.