近20年来,因米非司酮的问世,用药物终止早孕的研究取得突破性进展。米非司酮配伍前列腺素终止孕7周内的早孕成功率已达90%以上,且发现临床疗效与用药时间密切相关,但存在出血量大、出血时间较长,部分患者有大出血需急诊清宫等问题待解决。为进一步探讨用药与孕用和阴道出血量的 In the past two decades, with the advent of mifepristone, breakthroughs have been made in the study of termination of early pregnancy with drugs. Mifepristone with prostaglandin termination of pregnancy within 7 weeks of early pregnancy success rate has reached 90% or more, and found that the clinical efficacy and duration of treatment are closely related, but there is a large amount of bleeding, bleeding time longer, some patients have urgent hemostasis Other issues to be solved. To further explore the use of medication and vaginal bleeding and pregnancy