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孕期27周羊水多少正常范围
更新时间: 2020-11-04 00:00:00  

怀孕27周羊水指数正常范围:8-24厘米。羊水的主要来源有:妊娠早期主要来自母体血清经胎膜进入羊膜腔的透析液;妊娠中期以后,胎儿尿液成为羊水的主要来源;妊娠晚期,胎儿肺参与羊水的生成,每日600-800毫升液体从肺泡分泌至羊膜腔。羊水与胎儿之间主要通过胎儿消化管、呼吸道、泌尿道以及角化前皮肤进行交换。怀孕期间注意定期产检以了解胎儿宫内生长发育情况及羊水量。

关键词: 孕期 羊水 多少 正常 范围

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