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自然流产一般是指在没有外来因素干扰下,妊娠不满20周,胎儿体重不足500克而中止者。自然流产发生3次以上者称为习惯性流产。自然流产是妇产科的常见病,占妊娠总数的15～20％。一些患有习惯性流产的妇女,未对流产原因进行分析就盲目接受保胎措施,结果往往不能如愿,最后还是流产或生出畸形儿,而酿成不良后果,给家庭和社会带来了不幸。因此,分析自然流产的原因,不仅对于诊断、治疗都极其重要,而且对优生优育也具有深远的现实意义。自然流产的原因很多,概括起来可分为遗传因素和非遗传因素两大类。
Spontaneous abortion generally refers to the absence of external factors, pregnancy less than 20 weeks of pregnancy, fetal weight less than 500 grams of those who stopped. Natural abortion occurs more than 3 times known as habitual abortion. Spontaneous abortion is a common disease in obstetrics and gynecology, accounting for 15 to 20% of the total number of pregnancies. Some women with habitual abortion have blindly accepted abortion measures without analyzing the causes of abortion. The results often fail to be met. Finally, abortion or birth of deformed children lead to unfortunate consequences for families and the society. Therefore, the analysis of the causes of spontaneous abortion, not only for the diagnosis and treatment are extremely important, but also has far-reaching practical significance for prenatal and postnatal care. Natural abortion for many reasons, can be summed up in genetic and non-genetic factors into two categories.