资料与方法 1 对象 选自1998年1月至1999年6月我院患者住院50例,因各种原因要求终止妊娠的孕10～16周单胎患者,年龄20～35岁,身体健 康,血、尿、白带常规正常,出凝血时间正常,经B超确认为宫内单胎妊娠者,无药物过敏史,无前列腺素及米非司酮引产禁忌。 2 用药方法及用量 米非司酮每片25mg,口服,服法为早8点50mg,晚8点25mg,共2d,总量为150mg,服药前后2h禁食,第3天早8点在 Materials and Methods 1 Subjects selected from January 1998 to June 1999 in our hospital 50 patients hospitalized for various reasons require termination of pregnancy pregnant 10 to 16 weeks of singleton patients, aged 20 to 35 years old, good health, blood , Urine, vaginal discharge routine normal clotting time is normal, confirmed by B ultrasound for intrauterine one-pregnancy, no history of drug allergy, no prostaglandin and mifepristone induced taboo. 2 methods and dosage of mifepristone 25mg tablets, oral, service method as early as 8 points 50mg, 8 points at night 25mg, a total of 2d, a total of 150mg, 2h fasting before and after taking the 3rd day as early as 8 in the