肺栓塞 (Pulmonary Emblism,PE)是由于内源性或外源性栓子堵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。其发病率、病死率及误诊率均较高。原因在于本病临床表现多样且无特异症状、典型的“胸痛、咯血、呼吸困难”三联症不足 1/ 3[1 ] ,临床易漏误诊 ,有的终生得 Pulmonary embolism (PE) is a clinical and pathophysiological syndrome resulting from the blockage of the pulmonary artery or its branches due to endogenous or exogenous emboli. The incidence, mortality and misdiagnosis rates are higher. The reason is that the clinical manifestations of the disease is diverse and no specific symptoms, the typical “chest pain, hemoptysis, dyspnea” triad less than 1/3 [1], clinical misdiagnosis misdiagnosis, and some lifetime