ZOU Hanxue, ZENG Haoxia, MAO Minhong, ZHAO Huirong
Chinese Journal of Family Planning.
2025, 33(12):
2868.
To investigate the impact of the interpregnancy interval of advanced-aged multiparas on their pelvic floor dysfunction (PFD), and to establish a predictive model. Methods: A total of 230 multiparas who had undergone the antenatal care and delivered in the hospital from August 2022 to February 2025 were enrolled, including 149 (64.8%) cases with normal postpartum pelvic floor function in group A and 81 (35.2%) cases with PFD in group B. 230 multiparous were randomly divided into a training set and a validation set at a ratio of 7:3. The training set included 161 multiparas (104 multiparas with normal pelvic floor function and 57 multiparas with PFD) for the model establishment, and the validation set included 69 multiparas (45 multiparas with normal pelvic floor function and 24 multiparous with PFD). The data of the multiparas was collected, which included the age, the body mass index (BMI) at delivery, the gestational weeks at delivery, the mode of conception, the oxytocin used, the number of previous deliveries, the mode of delivery in this time, the episiotomy during delivery, the prolonged second stage of labor, the history of vaginal delivery, the pregnancy complications, the fetal position, the birth weight of the newborn and the time of pregnancy interval (TPI, <1.5 years, 1.5 to 5 years and >5 years). Results: 81 multiparous in group B, there were 69 (85.2%) multiparous with urinary leakage, 52 (64.2%) multiparous with weak urination, 44 (54.32%) multiparas with experienced constipation and 39 (48.15%) multiparous with dyspareunia. In the training set, the age, the parity, and the proportions of vaginal delivery, the episiotomy during delivery, the prolonged second stage of labor, the history of vaginal delivery and TPI (<1.5 years, >5 years) of the multiparas with normal pelvic floor function were significantly higher than those of the multiparas with PFD (all P<0.05). Logistic regression analysis showed that the advanced-age, the multiple pregnancies, the vaginal delivery and TPI <1.5 years of the multiparous were the independent factors influencing their postpartum pelvic floor dysfunction (P<0.05). For the verification set, the Hosmer-Lemeshow test was used to validate the model and the predicted values of the model had a good fit with the actual values, and which suggested that the model had good discrimination and the predicted probabilities were consistent with the actual probabilities. Conclusion: The advanced age, the more parity, the vaginal delivery and IPI <1.5 years of the multiparas are the independent risk factors of their PFD. The impact of IPI of the multiparas on their PFD follows a U-shaped curve, with the higher risks of IPI <1.5 years or >5 years and with the lower risks of IPI 1.5-5 years.