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怀孕1-2周是多少天

更新时间: 2020-11-04 00:00:00     

怀孕期间1周是7天,怀孕1-2周就是7-14天,正常是孕40周,则是280天。

孕周临床上,习惯从末次月经第1天开始计算,如果月经规律,孕周按照末次月经算。如果月经不规律的,要校正末次月经,根据验孕时间,或者B超推测末次月经的日期,然后算孕周。预产期也是根据末次月经算,预产期算法是,末次月经月份减3或者是加9,日期加7,算出的日期就是预产期。孕期做的产前检查,也是根据孕周来规定,例如孕11-14周之间,要做胎儿NT检查。

关键词: 怀孕 多少

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