Impact of Childbirth Modes on Postpartum Pelvic Floor Electromyographic Activity: A Single-Center Retrospective Analysis

Purpose: To explore the effects of disparate modes of delivery on the pelvic floor electromyographic potential in postpartum women. Methods: : 3955 females from Postpartum 42 days clinic was incorporated into the study, They subjected to electrophysiological examination of pelvic floor musculature ( sEMG ) . Based on their respective modes of childbirth, they were categorized into four distinct groups. cesarean section(GROUP A, n=791), normal delivery accompanied by episiotomy(GROUP B, n=791), normal delivery coupled with perineal laceration(GROUP C, n=791), and standard vaginal delivery(GROUP D, n=1582). Quantitative determinations were performed for fast-twitch stage maximum value, slow-twitch stage mean value, pre-testing resting stage mean value and post-testing resting stage mean value. Results: : The group A exhibited higher electromyographic indicators than those observed in the group D, who in turn demonstrated higher electromyographic indicators than those in the group B and group C. The differences in surface electromyographic indicators between Group B and Group C postpartum women are not significant. Age exerts a statistically significant impact on the pre-resting phase, slow-twitch stage, and post-resting phase (p 0.05). The number of childbirths has a statistically significant effect on the fast-twitch stage maximum value and slow-twitch stage mean value (p 0.05). Conclusion: The mode of delivery influences pelvic floor electromyography. Cesarean delivery has a more substantial impact on pelvic floor electromyography compared to episiotomy during vaginal delivery, perineal laceration during vaginal birth, and unassisted vaginal delivery. Both episiotomy and perineal laceration during vaginal delivery, compared to unassisted vaginal delivery, tend to amplify the effects on pelvic floor function. The impacts on pelvic floor function between episiotomy and perineal laceration incurred during vaginal delivery are minimally different.