患者,女,27岁。因停经34周,8h阴道先后出血2次,于1997年3月10日入院。末次月经1996年6月12日,预产期1997年3月26日。停经40余日感轻度恶心、呕吐等不适,持续月余好转,停经21周感腹内胎动。孕31周及32周分别无原因阴道出血2次,量少,色暗红,无腹痛感。对症处理后出血停止。入院前8h再次阴道出血,量多,用卫 Patient, female, 27 years old. Due to menopause 34 weeks, 8h vaginal bleeding has 2 times, on March 10, 1997 admission. The last menstruation June 12, 1996, the expected date of March 26, 1997. Menstruation more than 40 days a sense of mild nausea, vomiting and other discomfort, continued for more than a month, menopause abdominal sensation within 21 weeks. 31 weeks and 32 weeks of pregnancy, respectively, no reason vaginal bleeding 2 times, less, dark red, no abdominal pain. Symptomatic bleeding stopped. 8h before admission again vaginal bleeding, quantity, with Wei