肺栓塞(pul monary embolism,PE)是指来自静脉系统或右心的栓子嵌塞于肺动脉及其分支,使肺组织血液供应受阻所引起的临床和病理生理综合征。由于PE的临床症状复杂,缺乏特异性,故常发生误诊或漏诊。因此,及时对本病作出正确诊断是选择治疗时机、影响患者预后的关键[1]。无论对PE Pulmonarial embolism (PE) refers to the clinical and pathophysiological syndrome caused by embolism of the venous system or the right heart embolus in the pulmonary artery and its branches, obstructing the pulmonary blood supply. Due to the complex clinical symptoms of PE, the lack of specificity, it often happens misdiagnosis or missed diagnosis. Therefore, timely diagnosis of the disease is the right time to choose the treatment, the key to affecting the prognosis of patients [1]. No matter for PE