天气预报 > 其他 > 37周4天发育标准是多少正常
37周4天发育标准是多少正常
更新时间: 2020-11-04 00:00:00  

37周4天发育标准是宝宝胎长约45cm,胎重2700g。双顶径的平均值为8.81±0.57cm,腹围的平均值为29.44±2.83cm,股骨长为6.95±0.47cm。37周胎儿会将背部蜷缩成球状,两手置于胸前,弯曲双脚缩贴着肚子,头朝下准备进入骨盆腔。虽然子宫里没有太多空间让宝宝活动手脚,但在出生之前,宝宝依然会间歇性地动一动身体,然后就这么迫不及待地等着出生的那一刻。

关键词: 发育 标准 多少 正常

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