Effects of Different Delivery Modes on Pelvic Floor Function in Parturients 6-8 Weeks after Delivery Using Transperineal Four-Dimensional Ultrasound.

Objective: To evaluate the effects of different delivery modes on pelvic floor function in parturients 6-8 weeks after delivery using transperineal four-dimensional ultrasound.

Methods: Pelvic floor function 6-8 weeks after delivery in 40 vaginal delivery parturients between November 2018 and December 2020 was assessed by four-dimensional ultrasound, with 40 selective cesarean section delivery parturients as a control group. The imaging results of the two groups were compared.

Results: The levels of clinical indexes such as UVJ-M, , , , , , and ARJ-VDv in the selective cesarean section group were significantly lower than those in the vaginal delivery group 6-8 weeks after delivery ( < 0.05). However, no significant difference in CV-VD was observed under Valsalva action and at rest between the two groups ( > 0.05). No significant difference in ARJ-VD was found at rest between the two groups ( > 0.05). The incidence of pelvic organ prolapse in the selective cesarean section group (40.0%) was significantly lower than that in the vaginal delivery group (62.5%) ( < 0.05). No significant difference in the parameters of pelvic diaphragm hiatus at rest was observed between the two groups ( > 0.05). The parameters of pelvic diaphragm hiatus under maximum Valsalva action in the vaginal delivery group were significantly higher than those in the selective cesarean section group ( < 0.05). Whether the patient was complicated with diabetes had no significant effect on the functional injury of pelvic floor muscle ( > 0.05).

Conclusion: The pelvic floor function 6-8 weeks after delivery was significantly more affected in vaginal delivery than in selective cesarean section. Selective cesarean section had certain but limited protective effect on maternal pelvic floor tissue.