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孕妇38周时羊水多少正常范围
更新时间: 2020-11-04 00:00:00  

孕妇38周时,胎儿羊水一般最深径线不低于40mm,羊水指数不低于80mm就算正常。

所谓羊水,是指怀孕时子宫羊膜腔内的液体。在整个怀孕过程中,它是维持胎儿生命所不可缺少的重要成分。在胎儿的不同发育阶段,羊水的来源也各不相同。在妊娠第一个三月期,羊水主要来自胚胎的血浆成分。之后,随着胚胎的器官开始成熟发育,其他诸如胎儿的尿液、呼吸系统、胃肠道、脐带、胎盘表面等等,也都成为了羊水的来源。

关键词: 孕妇 羊水 多少 正常 范围

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