1·Methods 5 cases of vasa previa in velamentous insertion of umbilical cord were analyzed retrospectively.
方法对5例脐带帆状附着前置血管进行回顾性分析。
2·Objective: to study the diagnosis and management of the rupture of previa blood vessel of velamentous insertion of umbilical cord.
目的：探讨脐带帆状附着前置血管破裂的诊断及处理。
3·Bleeding; Delivery; Placenta; Previa; Uterine inertia.
出血；分娩；胎盘，前置；宫缩乏力。