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怀孕31周胎儿的头围多少正常
更新时间: 2020-11-04 00:00:00  

怀孕31周胎儿的头围大约是283mm,胎儿头围是指绕胎头一周的最大长度。

头围(英文名headcircumference)是指从眉间点(g)为起点,经枕后点(op)至起点的围长。头围反应脑,颅骨的发育,在2岁时测量最有意义,头围过大见于脑积水、佝偻病;头围过小见于小头畸形。

关键词: 怀孕 胎儿 多少 正常

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