[Detection of uterine scar defect during pregnancy by ultrasonics].
B type ultrasonography was used to observe the formation of lower uterine segment in 71 primigravide and the status of lower uterine segment scar in 31 multiparae with previous cesarean section (CS), from the 33 to 41 gestational week. Results showed that the lower uterine segments was formed in all 102 cases after the 33rd week. Compared with the primigravide, the lower uterine segment in the CS group was longer, thinner and not as wide after the 37th gestational week. Defective scars of the lower uterine segment were found in 7 cases of the CS group and 2 of them were diagnosed as threatened dehiscence owing to the fetal sac protruding from the scar site. Condition of all these cases were confirmed during operation. The present study suggested that B ultrasonic scar can be a helpful and noninvasive method for detecting scar defect in the lower uterine segment following CS.
Yang
T Z
TZ
Second Affiliated Hospital, West China University of Medical Science, Chengdu.
Li
W Z
WZ
D002921:Cicatrix / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000000981:diagnostic imaging; D014463:Ultrasonography; D014597:Uterine Rupture / Q000517:prevention & control*; D014599:Uterus / Q000000981:diagnostic imaging*