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孕期6个月羊水指数多少正常
更新时间: 2020-11-04 00:00:00  

孕期6个月羊水指数5~18cm之间是正常的,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: 孕期 羊水 指数 多少 正常

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