Analysis of the Correlation Factors in External Cephalic Version in the Full Term Under Ultrasound Guidance

Zhao Zhiying; Fu Jianhong

doi:10.3969/j.issn.1004-5775.2025.08.002

Abstract：Objective:To study the factors affecting the success of external cephalic version(ECV).Methods:This was a restropective analysis of the clinical data of 57 singliton pregnancises in breech or transverse position who accepted ECV in the Fifth Affiliated Hospital of Zhengzhou University from January 2020 to December 2022.All of them were volunteered to undergo the ECV.According to the success of external inversion,they were divided into two groups,including successful and failed groups.Logging the general information before the ECV and pregnancy outcome after the ECV between the two groups.Univariate analysis and logistic regession analysis were performed to screen out the factors the factors affecting the success of external cephalic version.The difference of pregnancy outcome between the two groups was compared.Results:There were significant differences in the number of births,placenta location,type of fetal presentation and umbilical circumferences between the two groups(x2=12.498,9.619,7.588,4.776;P＜0.05).Multivariate logistic regression analysis showed that parturient women and placenta in anterior wall and single hip presentation were all adverse factors affecting the success of ECV implementation,while parturient women,non-anterior wall placenta and complete hip presentation were favorable factors(OR=0.205,0.058,0.218;P＜0.05).There was significant difference in delivery mode between the two groups(x2=40.078,P＜0.05).The gestational week of delivery in successful group was later than that in unsuccessful group,and the difference was statistically significant(t=7.531,P＜0.05).Conclusion:ECV can effectively reduce the rate of caesarean section,but parity,placental position,fetal presentation and so on can influence the success rate.It is necessary to operate under emergency conditions and full communication,strictly grasp the indications and contraindications,and select the right group and opportunity according to relevant favorable factors.