患者2 9岁,住院号1 0 75 9,孕3产1。因孕37周,阴道流血2次,血量增多2h ,于2 0 0 2年1 0月1日急诊入院。末次月经2 0 0 2年1月1 4日,停经后无明显早孕反应,孕4月余开始有胎动,孕6个月因无痛性阴道流血,在外院诊断“前置胎盘”而治疗(具体用药不详) ,近半月出现双下肢水肿,休息后 The patient was 29 years old, had a hospitalization of 1 0 75 9, and had 3 pregnancies. Due to 37 weeks of pregnancy, 2 vaginal bleeding, blood volume increased 2h, on January 1, 2002 emergency admission. The last menstrual January 1, 2002, January 14, no significant early postmenopausal reaction after menopause, pregnancy began in April fetal movement, 6 months pregnant due to painless vaginal bleeding, the diagnosis of “placenta previa” outside the hospital for treatment ( Specific medication is unknown), nearly half of the lower extremity edema, rest