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自然状态(非人为目的造成)发生的流产称为自然流产。在我国自然流产是指妊娠28周前终止,胎儿体重小于1000克。自然流产在发达国家定义有所不同,是指在妊娠20周以前或24周以前,胎儿体重小于600~700克。自然流产可分为生化妊娠(发生在妊娠5周内的早期流产,血中可以检测到HCG升高,大于25 m115/mI或者尿妊娠试验阳性,但超声检查看不到孕囊,提示受精卵着床失败)、空孕囊(自
Abortion occurring in a natural state (caused by non-human purpose) is called spontaneous abortion. In our country spontaneous abortion refers to the termination of pregnancy 28 weeks ago, fetal weight less than 1000 grams. The definition of spontaneous abortion in developed countries is different, meaning that the fetus weighs less than 600 to 700 grams before or 24 weeks of gestation. Spontaneous abortion can be divided into biochemical pregnancy (occurred in 5 weeks of gestation early abortion, blood HCG can be detected elevated, greater than 25 m115 / mI or urine pregnancy test was positive, but ultrasound examination can not see the gestational sac, suggesting that fertilized eggs Implantation failure), empty gestational sac (from