分娩期女性盆膈裂孔三维超声影像学观察  

Preliminary study of 3D ultrasound in visualization of levator hiatus in intrapartum women

作　　者：陶均佳[1] 应涛[2] 杨少玲[1] 赵奕文[1] 金秀红[1] 潘莉华[1] 

机构地区：[1]上海交通大学附属第六人民医院南院超声医学科,201499 [2]上海交通大学附属第六人民医院超声医学科

出　　处：《中华超声影像学杂志》2014年第11期962-965,共4页Chinese Journal of Ultrasonography

基　　金：上海市自然科学基金（13ZR1431300）

摘　　要：目的应用经会阴盆底三维超声观察分娩期不同阶段女性盆膈裂孔的形态学变化。方法选取阴道试产的单胎初产妇62例，分别采集静息状态下宫口未开、宫口开全及产后即刻3个阶段的盆底三维超声容积数据。在最小盆膈裂孔平面进行超声形态学观察及参数测量，包括盆膈裂孔前后径、左右径、面积及周长。结果经会阴三维超声可较好地显示分娩不同阶段的女性盆底结构。盆膈裂孔的前后径、左右径、面积及周长均为宫口开全时最大，产后次之，宫口未开时最小（P均〈0．001）。结论经会阴盆底三维超声是一种有效的观察分娩期女性盆底结构的影像学方法。阴道分娩可导致盆膈裂孔形态增大。Objective To visualize the pelvic floor structures by translabial three-dimensional（3D） ultrasonography performed during labor and immediately after delivery, and to observe the morphological changes of levator hiatus in intrapartum women.Methods Totally 62 nulliparous women with singleton pregnancy and cephalic presentation in labor ward underwent intrapartum translabial 3D ultrasound examination before cervical dilatation, at 10 cm dilatation and immediately after delivery. Volume datasets were obtained at rest, biometric measurements and observation of the morphological changes of levator hiatus in different stages were determined in the axial plane. Comparative analyses of parameters in three stages were carried out. Results Translabial 3D ultrasound demonstrated the pelvic floor structures of intrapartum women well. All biometric measurements of the hiatus before cervical dilatation were the smallest and became the largest at 10 cm dilatation, showed statistically significant differences. The measurements after delivery got smaller immediately but still significantly larger than those before cervical dilatation （ P 〈0.001）.Conclusions Translabial 3D ultrasound examination of the pelvic floor during labor and within the first 2h after delivery is feasible. It seems to be an effective tool to visualize pelvic floor structures in intrapartum women.Hiatal enlargement may be a common consequence of vaginal childbirth.

关 键 词：超声检查 三维 盆膈裂孔 分娩期 

分 类 号：R445.1[医药卫生—影像医学与核医学]