初次b超看预产期最准确吗

来自李艳医生的专业解答，快打开看看是否又获得了新的知识点～

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有来医生

病情分析：初次做B超检查，可以根据孕囊的大小来计算怀孕时间，这时候是比较准确的，一般的误差最多也就几天、随着怀孕时间的增长，胎儿的体格发育开始出现差异，即便是同一时间怀孕的胎儿，在数值上也可以有较大的差异，这时候根据双顶径股骨长等来计算预产期差别就比较大，远不如怀孕早期做B超检查，根据孕囊的大小来计算准确。

李艳

主治医师

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