胎盘附着于子宫下段或覆盖在子宫颈内口处,位置低于胎儿的先露部,称为前置胎盘,它是引起妊娠晚期出血的主要原因之一,为妊娠期的严重并发症[1]。如处理不当,能危及母婴生命安全,是围生儿及孕产妇死亡的主要原因之一。正确合理的处理可降低母婴的死亡率。回顾性分析我院2003年1 Placenta attached to the lower uterine segment or cover the cervix in the mouth, the location lower than the fetal first dew, known as placenta previa, which is caused by one of the major causes of bleeding during pregnancy, severe complications of pregnancy [1 ]. If not handled properly, can endanger the lives of mothers and children, is one of the main causes of perinatal and maternal deaths. Proper and reasonable treatment can reduce maternal and infant mortality. Retrospective analysis of our hospital in 2003 1