自然流产的发生与既往妊娠史、孕妇年龄及其它一些未明确的原因有关。发生在孕8～9周时的流产与上述原因都有关,近代利用超声诊断妊娠,但大多仍是在孕8周时确诊。与之相比,由于高灵敏度的hCG检验及断层超声的应用,确诊妊娠的时间大大提前,随之而来的一个临床问题是,当有流产史的妇女,在如此早的时间确诊妊娠,咨询再次发 The occurrence of spontaneous abortion and previous pregnancy history, pregnant women, age and some other reasons are not related. Occurrence of pregnancy at 8 to 9 weeks of abortion and the above reasons are related to the use of modern ultrasound diagnosis of pregnancy, but most are still diagnosed at 8 weeks pregnant. In contrast, due to the high sensitivity of hCG test and the application of tomography, the diagnosis of pregnancy was greatly advanced, one of the clinical problems is that when a woman with a history of miscarriage, pregnancy diagnosed at such an early time, consult Send again