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自然分娩时子宫的阵发性收缩、胎儿通过产道时产生的压迫等,共同导致剧烈的产痛。正常情况下,初产妇的产程在10~14个小时,尤其在第一产程活跃期,剧烈的疼痛往往使部分产妇丧失继续自然分娩的信心。实际上,一项研究已表明,无论剖宫产产妇还是自然分娩产妇选择再分娩方式时,均因为阴道分娩痛而更倾向于选择剖宫产分娩[1]。这也印证了巴西的一项队列研究结果,有些孕产妇并非知晓了各种分娩方式的利弊并权衡利害关系后作
Paroxysmal contraction of the uterus during natural childbirth, oppression of the fetus through the birth canal, etc., together lead to severe labor pain. Under normal circumstances, the first stage of labor in the first 10 to 14 hours, especially in the active phase of the first stage of labor, severe pain is often part of the mother lost the confidence to continue natural childbirth. In fact, one study has shown that both cesarean section delivery and natural delivery mothers are more likely to choose cesarean section delivery because of the vaginal delivery pain when choosing the mode of re-delivery [1]. This also confirms the results of a cohort study in Brazil. Some pregnant women are not aware of the pros and cons of various modes of delivery and weigh the relationships