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孕9周羊水多少为正常
更新时间: 2020-11-04 00:00:00  

怀孕9周,此时羊水指数较低,羊水深度约为3-8cm,羊水量正常值约为50-200ml,羊水主要是母体血清通过胎盘进入羊膜腔的透析液,通过羊水中胎儿细胞染色体的检测,可对胎儿进行遗传性疾病的筛查。

关键词: 羊水 多少 正常

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