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怀孕54天B超心率多少正常
更新时间: 2020-11-04 00:00:00  

胎心率是每分钟110-160次,怀孕18-20周就可以听到胎心音。一般来说,胎儿的胎心最早在孕10周就可以通过仪器测出来,目前,比较普遍运用到的多普勒的高灵敏度仪器,可以在胎儿10周或者12周的时候,便可以听到像马蹄声一样的心跳。不过,也有些医院可能采用一般的听诊器,这样的话,就要到17-18周才能追踪到胎儿的心跳声。

关键词: 怀孕 心率 多少 正常

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