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五个月羊水多少算正常
更新时间: 2020-11-05 00:00:00  

五个月羊水的正常值是:羊水深度3厘米到8厘米,羊水指数8厘米到18厘米。一般整个孕期羊水量的正常值都是上述这个值。羊水的来源、量和成分随孕周不同而有所变化。妊娠初期,羊水主要是母体血清通过胎盘进入羊膜腔的透析液,少量从胎盘表面和脐带表面渗出。当胎儿血循环形成后,胎儿体内水分和小分子可经尚未角化的胎儿皮肤渗出,构成羊水的一部份。

关键词: 羊水 多少 正常

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