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孕7周加一天是多少天
更新时间: 2020-11-04 00:00:00  

孕7周加一这是怀孕50天的意思,孕7周减一这是怀孕不到50天,一般是7天为一周的。

怀孕周期的计算是从末次月经的第一天开始计算。一般大约需要280天左右,40周。但是部分女性可能在怀孕满37周以后生产,也是属于孕足月。如果达到28周至不满37周生产属于早产,出生后胎儿需要特殊的护理才能存活。在怀孕晚期胎儿出现异常情况,会通过胎动次数改变观察到。所以平时要注意胎动次数,正常每两小时胎动次数要大于等于10次左右。

关键词: 多少

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