Effects of Transvaginal Delivery on Pelvic Floor Structure and Function in Primiparas of Different Ages
Objective:To explore the effects of transvaginal delivery on pelvic floor structure and function in primiparas of different ages.Method:A total of 84 primiparas who delivered vaginal in Yichun People's Hospital from January 2021 to December 2023 were selected.28 primiparas<23 years old were selected as the young age group,28 primiparas aged 23-30 years old were selected as the appropriate age group,and 28 primiparas aged>30 years old were selected as the elderly group.The levator hiatus area,posterior urethrovesical angle (PUA),cervical mouth position (CMP) and bladder neck position (BNP) at rest and maximum Valsalva action were measured by pelvic floor three-dimensional ultrasound at 6 weeks postpartum,and urethral rotation angle (URA),bladder neck descent (BND) and external cervix down distance (CDD) were calculated.The occurrence of pelvic floor dysfunction in three groups were recorded.Result:At rest,the levator hiatus area in the elderly group was larger than that in the appropriate age group and the young age group,the differences were statistically significant (P<0.05).The levator hiatus area,CMP and BNP at maximum Valsalva action in the elderly group were larger than those in the appropriate age group and the young age group,the differences were statistically significant (P<0.05).The URA,BND and CDD of the elderly group were higher than those of the appropriate age group and the young age group,the differences were statistically significant (P<0.05).The incidence of infundibulum formation of internal urethral orifice and uterine prolapse in the elderly group were higher than those in the appropriate age group and the young age group,and the incidence of cystocele was higher than that in the young age group,the differences were statistically significant (P<0.05).Spearman correlation analysis showed that age was positively correlated with infundibulum formation of internal urethral orifice,cystocele and uterine prolapse (rs=0.425,0.361,0.374,P<0.05).Conclusion:The older the primipara,the more severe the damage to pelvic floor structure and function during delivery may be.