流产按照时间怎么分类?How to classify miscarriage according to time?

流产的时间怎么确定，怀孕16周算是晚期流产吗?How to determine the time of miscarriage, 16 weeks of pregnancy is late miscarriage?

北京安太医院陈凤林教授指出：流产的时间以12周为界，12周以后，就算晚期流产，28周后叫早产。Professor Chen Fenglin of Beijing Antai hospital pointed out that: the time of miscarriage is 12 weeks. After 12 weeks, even if the late miscarriage occurs, it is called premature delivery 28 weeks later.

大月份的流产多与宫颈松弛有关系，可以孕前进行宫颈埋箍可以避免流产，有效安全，无需要卧床!The miscarriage in large months is mostly related to the relaxation of the cervix. It can avoid the miscarriage by embedding the hoop before pregnancy. It is effective and safe, and there is no need to lie in bed!

流产的分类：

Classification of miscarriage:

按发生的时间分：发生在妊娠12周前者，称早期流产，发生在妊娠12周及以后、不足28周者称为晚期流产。

According to the time of occurrence: the former occurs in 12 weeks of pregnancy, which is called early miscarriage; the latter occurs in 12 weeks of pregnancy and later, which is less than 28 weeks, which is called late miscarriage.