超声对妊娠晚期子宫下段厚度测量的准确性

Investigation of Detection Accuracy of Thickness of Lower Uterine Segment by Ultrasonography During the Third Trimester of Pregnancy

目的:探讨超声检测妊娠晚期子宫下段厚度的准确性。方法:选取2012年2月至2013年3月就诊的200例孕妇,按照是否有手术史而将其随机分两组,其中112例至少有一次剖宫产史作为有剖宫产史组,88例无子宫手术史作为无手术史组。全部孕妇在剖宫产术前和术中均进行子宫下段厚度测量。结果:术前l周超声测量子宫下段厚度与术中测量的子宫厚度之间差异无统计学意义(P>0.05)。无手术史组子宫下段厚度大于有剖宫产史组(P<0.05)。结论:在妊娠晚期的子宫下段厚度测量中,超声可基本反映子宫下段的厚度。没有过剖宫产史的孕妇在分娩前的子宫下段厚于有剖宫产史者。

Objective： To explore detection accuracy of thickness of lower uterine segment by ultrasonography during the third trimester of pregnancy. Methods： Two hundreds hospitalized pregnant women from February,2012 to March,2012 were randomly divided into two groups according to history of cesarean section or none,among which 112 women had history of cesarean section at least one time,and 88 women had not. All the cases underwent preoperative ultrasonic measurement and intraoperative measurement of thickness of lower uterine segment. Results： There was no significant difference in the lower uterine segment thickness during the week before operation between the two groups（ P 〉0. 05）. The thickness in non- cesarean section history group was thicker than that in cesarean section history group（ P〈 0. 05）. Conclusions： The thickness of lower uterine segment can be reflected by ultrasonography during the third trimester of pregnancy. The thickness in non- cesarean section history group was thicker than that in cesarean section history group.