近年来随着辅助生育技术不断发展等诸多因素,基层医院孕妇的前置胎盘发生率在逐年增加[1]。前置胎盘患者大多需要施行剖宫产术,由于前置胎盘孕妇胎盘大多附着于子宫切口部位,需切开胎盘导致大量出血;同时由于是子 In recent years, with the continuous development of assisted reproductive technology and many other factors, the incidence of placenta previa in pregnant women in primary hospitals is increasing year by year [1]. Most patients with placenta previa need to implement cesarean section, as placenta previa placenta most of the placenta attached to the uterine incision site, the need to open the placenta resulting in massive bleeding; the same time as a child