近年来前置胎盘的发病率未见下降,但并发植入胎盘病例似有上升倾向[1],且不乏大出血危及生命者,如何在孕期对前置胎盘伴胎盘植入病例预作评估,做到有备无患,具有重要的临床意义。本院近年来对妊娠30周以上产前出血患者同时分别采用腹式及阴道Ｂ超探测,在超声声像上有所发现,今 In recent years, the incidence of placenta previa has not decreased, but the incidence of placenta accreta placenta accreta seems to rise [1], and there is no endanger of life-threatening bleeding, placenta accreta placenta accreta in pregnancy pre-assessment, do To be prepared, has important clinical significance. Hospital in recent years, more than 30 weeks of pregnancy in patients with prenatal bleeding at the same time, respectively, by abdominal and vaginal B-ultrasound, ultrasonic sonography found on the present