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多少周查骨盆
更新时间: 2020-11-05 00:00:00  

第一次盆腔测量是在怀孕后期28到32周进行的,第二次是在怀孕37到38周进行的。同时检查宫颈成熟度。在妊娠晚期,盆腔内测量主要采用盆腔中部测量仪,依靠阴道测量坐骨间直径。如果坐骨间径过小,会影响分娩时胎头的下降。

关键词: 多少 骨盆

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