凶险性前置胎盘指前次为剖宫产史,此次妊娠为前置胎盘,发现胎盘植入的危险性约为50%[1]。由于疤痕子宫的切口处子宫肌层菲薄,收缩力弱,部分胎盘植入,导致开放血窦不易关闭,常发生难以控制的大出血。高胎盘植入率和产后大出血是其凶险的主要表现,居我国孕产妇死亡之首位[2]。本院自2010—2015年共收治了37例妊娠晚期合并凶险性前置胎盘的患者,经过及时的抢救和治疗,取得满意的效果,现将观察 The risk of placenta previa refers to the history of the previous cesarean section, the placenta previa pregnancy, placenta accreta found that the risk of about 50% [1]. Due to scar incision at the uterine myometrium meager, contractility is weak, part of the placenta implants, leading to open blood sinus difficult to close, often uncontrollable bleeding. High placenta accreta rate and postpartum hemorrhage is the main manifestation of its dangerous, ranking first in China’s maternal death [2]. The hospital from 2010 to 2015 were treated in 37 cases of pregnancy complicated with dangerous placenta previa, after timely rescue and treatment, and achieved satisfactory results, we will observe