患者35岁,住院号:70750。孕2剖宫产1。以“孕36+5周,下腹部疼痛23d,加重6h”之主诉,于2003年9月22日8时入院。末次月经2003年1月9日,预产期2003年10月16日,停经40d有轻度早孕反应,持续1个月自愈。孕5个月感胎动,孕6个月B超示前置胎盘。于23d前因阴道出血,量似月经量,下腹部 Patient 35 years old, hospital number 70750. Pregnancy 2 cesarean section. The main complaint was “Pregnancy 36 + 5 weeks, lower abdominal pain 23d, aggravating 6h” and was admitted to hospital at 0800 hours on September 22, 2003. The last menstrual January 9, 2003, the expected date of October 16, 2003, menopause 40d mild early pregnancy reaction, sustained 1 month self-healing. Pregnancy 5 months feeling fetal movement, 6 months pregnant B ultrasound showed placenta previa. Due to vaginal bleeding before 23d, the amount of menstrual flow, the lower abdomen