1病例介绍患者李某，26岁，因妊娠24周腹痛，腹胀7小时，胎动消失6小时，阴道流血4小时，于1998年4月6日以孕2产0孕24周瘢痕子宫急诊入院。该患末次月经为1997年11月12日，孕5个月时前来医院产前检查未见异常。患者于两年前因孕6个月中央性前置胎盘，曾在我县妇幼保健站行子宫 1 Case Description Patient Lee, 26 years old, abdominal pain due to abdominal pain for 24 weeks of gestation, 7 hours of fetal distension, 6 hours of vaginal discharge, 4 hours of vaginal bleeding. On April 6, 1998, pregnant women with 2 pregnancies, 2 pregnancies and 24 weeks of pregnancy, were enrolled. The suffering from the last menstrual period November 12, 1997, 5 months pregnant before coming to the hospital for prenatal examination showed no abnormalities. Two years ago, the patient was pregnant with 6 months of central placenta previa, in the county maternal and child health station line uterus