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孕妇九个月双顶径多少
更新时间: 2020-11-04 00:00:00  

怀孕九个月胎儿双顶径的正常值一般是9.28加减0.50,胎头双顶径又称BPD,是一个参考性的数据。医生常常用它来观察孩子发育的情况,判断能否有头盆不称,顺利分娩。在分娩的过程中胎儿的头部通过产道的最大径线就是双顶径,而产道中让胎儿通过的最小径线是骨盆出口横径,所以如果双顶径大于骨盆出口横径,孩子是否能自然分娩就是个问题。最终的选择还要看孕妇的骨盆和足月时孩子的大小。

关键词: 孕妇 多少

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