目的 探讨自由体位分娩方式和传统体位分娩方式对产后盆底功能的影响。方法 2015年3月—2016年3月在广州市妇女儿童医疗中心定期产检并分娩单胎初产阴道分娩610例产妇,按分娩方式分为自由体位分娩298例为实验组,传统体位分娩312例为对照组,对两组产妇会阴损伤,产后6～8周筛查盆底肌力,探讨不同体位分娩方式对产后盆底肌力的影响。结果 实验组阴道静息压,阴道收缩压、Ⅰ类肌纤维强度、 Ⅱ类肌纤维强度、阴道收缩持续时间均较对照组有增加,差异性均有统计学意义(P<0.05)。结论 自由体位分娩方式不降低产后盆底肌力,对产后盆底有保护作用。

Objective To analyze the effects of liberal intrapartum postures on the pelvic floor function of postpartum. Methods 610 pregnant women (vaginal delivery,single birth,and head position) were classified and analyzed in Guangzhou Women and Children Medical Center from March 2015 to March 2016. All the pregnant women were mature without pregnancy complications; 298 pregnant women who adopted free posture delivery were selected as observation group,312 pregnant women who adopted traditional posture delivery were selected as control group. We counted the number of perineal injury incidence of the two group,and the pelvic floor strength of the two groups was measured after fetal birth after 6 to 8 weeks. Results We compared the vaginal resting pressure(VRP),vaginal squeezing pressure(VSP),classⅠfiber strength, class Ⅱ fiber strength and the time of vaginal contraction between the two groups. Pelvic floor muscle strength was significantly stronger in the observation group than that in the control group (P<0. 05). Conclusion There is a closely association between the different intrapartum postures and the pelvic floor function of postpartum. Adopting free posture delivery has no adverse impact on pelvic floor function of postpartum, which can protect the function of female pelvic floor.