肺动脉栓塞(pulmonary embolism,PE)是栓子阻塞肺动脉或其分支,引起肺循环障碍的临床和病理生理综合征。据文献报道60%~70%的PE为深静脉血栓(deep venous thrombo-sis,DVT)栓子脱落导致的具有高死亡率的并发症[1],未经治疗的急性PE死亡率达30%,而通过充分治疗死亡率可降至2%~8% Pulmonary embolism (PE) is a clinical and pathophysiological syndrome where emboli block the pulmonary artery or its branches and cause impediment to pulmonary circulation. It has been reported in the literature that 60% to 70% of PE is a complication of high mortality due to the shedding of deep venous thrombo-sis (DVT) emboli [1], 30% of untreated acute PE, , While the full treatment of mortality can be reduced to 2% to 8%