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21周胎儿正常体重多少正常值
更新时间: 2020-11-04 00:00:00  

孕21周胎儿发育还比较小,体重也还是很轻的,一般在400克-450克上下比较常见的,也就是在8-9两左右,建议你需要定期产检,如果产检双顶径,股骨长等都是基本符合孕周的话,那么就是没问题的,现在胎儿还很小,一般很少有去计算体重的。

关键词: 胎儿 正常 体重 多少 正常值

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