31周sd值多少正常范围

来自牛海静医生的专业解答，快打开看看是否又获得了新的知识点～

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信用信息平台

病情分析：怀孕31周时，SD值的正常值为小于3.0。Sd值，指的就是胎儿脐动脉收缩压和舒张压的比值，反映胎儿脐动脉的血流情况。如果sd的值大于3.0，提示胎儿的脐动脉血流供应障碍，容易出现胎儿缺氧的现象。怀孕31周的时候检查出来Sd值2.5，属于正常范围以内。

牛海静

副主任医师

提示：本内容仅作参考，不能代替面诊，如有不适请尽快线下就医

问题描述：现在我怀孕有31周，昨天去医院做了检查，结果显示sd2.5,不知道是不是正常,31周sd值多少是正常范围？