妊娠晚期阴道出血是产科的常见症状,包括前置胎盘、胎盘早剥及胎盘边缘血窦破裂出血,其起病急、进展快、病情重,常威胁母婴生命。因此对这类疾病的进一步研究,有助于降低母婴围产期死亡率及患病率。 Vaginal bleeding in late pregnancy is a common obstetric symptoms, including placenta previa, placental abruption and placental marginal sinuses rupture bleeding, the onset of acute, rapid progress, severe illness, often threatening the lives of mothers and children. Therefore, further research on these diseases can help reduce the maternal perinatal mortality and morbidity.