陈凤林教授指出：晚期流产检查孕前的检查有：Professor Chenfenglin pointed out that the late abortion examination before pregnancy is:

阴道镜、阴道四维彩超、动态数字化子宫输卵管碘油造影、宫口松弛试验、溶血试验。

Vaginal mirror, vaginal four-dimensional color super, dynamic digital uterus fallopian tube iodography, uterine relaxation test, hemolytic test.

晚期流产治疗Advanced abortion treatment

宫颈松弛是孕12周后流产的主要原因，孕前宫颈埋箍，是用腹腔镜将一个纲箍埋在宫颈内口处， 生物箍为与人体相容性好，不必取出。

Cervical relaxation is the main cause of abortion after 12 weeks of pregnancy. Before conception, the cervix is buried with a laparoscope and buried in the inner cervix of the cervix. The biological hoop is good for compatibility with the human body and does not need to be removed.

母婴血型不合，诊断依据是：母亲是O型血，丈夫是其他血型，以往妊娠或输血，流产多发生在孕7个月后，胎儿水肿。原因是胎儿的Rh因子、不合的ABO血型因子在母体中产生抗体，此次妊娠由胎盘进入胎儿体内与红细胞凝集而产生溶血，以致流产。医院治疗是孕前进行免疫治疗，治愈率达90%;如果是孕中确诊可以在 胎儿存活的前提下剖腹产，然后对婴儿进行换血处理，保全孩子性命。

The diagnosis of maternal and infant blood types is based on: the mother is O-type blood, the husband is other blood types, past pregnancy or blood transfusion, abortion occurs more than 7 months after pregnancy, fetal edema. The reason is that the fetal Rh factor and the incompatible ABO blood factor produce antibodies in the mother. This pregnancy enters the fetus from the placenta and condenses with red blood cells to produce hemolytic blood, resulting in miscarriage. Hospital treatment is immunotherapy before conception, and the cure rate is 90 %; If it is diagnosed in pregnancy, Caesarean section can be performed on the premise of the fetus's survival, and then the baby is changed to save the child's life.