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从有规则宫缩开始至胎盘娩出为分娩的全过程。分娩进展不顺利就表现为产程延长。历来产科工作者为避免产程延长对母婴所带来的危害,曾提出鉴别正常与异常的时限。各家报道正常分娩的时限不一致,过去的教科书曾采用国外记载的标准,即初产妇
From the beginning of regular contractions to the delivery of the placenta for the entire process of delivery. Delivery progress is not smooth on the performance of labor to extend. Historically, obstetricians have put forward time limits to identify abnormalities and abnormalities in order to avoid prolonged labor-related harm to mothers and babies. Various reports of inconsistencies in the normal delivery of the past textbooks have used foreign documented standards that primipara