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三个月大羊水应该正常多少
更新时间: 2020-11-04 00:00:00  

怀孕3个月羊水深度一般3-5cm属于正常。7个月左右羊水最多,以后又慢慢减少。足月羊水指数少于5cm过少,超过25cm过多。妊娠早期时,羊水主要是从母体血清经胎膜进入羊膜腔的透析液,胎儿血循环形成以后,水分及小分子物质可通过尚未角化的胎儿皮肤。也是羊水的一个来源。

关键词: 羊水 应该 正常 多少

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