The Effects of Different Delivery Methods on Levator Ani Muscle of Primipara were Evaluated by Three-dimensional Perineal Ultrasonogra-phy Combined with Shear-wave Elastography
10.11969/j.issn.1673-548X.2024.09.025
- VernacularTitle:经会阴三维超声联合SWE评估分娩方式对初产妇肛提肌的影响
- Author:
Jiawen DONG
1
;
Liling SHI
;
Meili ZHANG
Author Information
1. 030001 太原,山西医科大学医学影像系
- Keywords:
Delivery mode;
Levator ANI muscle;
Pectineorectosis muscle;
Shear wave elastic imaging;
Young's modulus value
- From:
Journal of Medical Research
2024;53(9):127-131
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the application value of transperineal three-dimensional ultrasound combined with SWE in evalu-ating the effect of delivery mode on the morphology and function of levator ANI muscle in primipara,and to provide a new method for early diagnosis of pelvic floor dysfunction(PFD).Methods A total of 92 primiparas who were re-examined 6-8 weeks after delivery in our hospital were selected as postpartum group,and divided into vaginal delivery group(n=45)and cesarean section group(n=47)accord-ing to their delivery mode,and healthy women without childbirth at the same period were selected as control group(n=43).Transperineal three-dimensional ultrasound combined with SWE was used to examine the differences in the morphological parameters and elastic param-eters of levator anal hiatus in different states among all groups.Results The hiatus area of levator anal muscle(LHA)at rest,maximum anal retraction and maximum Valsalva in the vaginal delivery group was greater than that in the cesarean section group and control group,and the cesarean section group was greater than the control group,the differences were statistically significant(P＜0.01).Compared with control group and cesarean section group,the elastic parameters of vaginal delivery group at rest and maximum anal retraction were de-creased,the difference was statistically significant(P＜0.01).There was no significant difference in elastic parameters between the cesar-ean section group and the control group(P＞0.05).The difference between maximum Valsalva state and resting state LHA(Δ A')was negatively correlated with the difference before and after contraction of bilateral PR Young's modulus(ΔE)(left r=-0.444,P=0.008;Right r=0.488,P=0.002).Conclusion Three-dimensional perineal ultrasonography combined with SWE can quantitatively evaluate the morphology and function of levator ANI muscle,and provide evidence for the early diagnosis of PFD.
