肺栓塞 (pulmonaryembolism ,PE)是内源性或外源性栓子堵塞肺动脉或其分支引起的肺循环障碍的临床和病理生理综合征。本病以其发病率、误诊率和病死率高而成为国内外重要的医疗保健问题。国内阜外医院连续 90 0例尸检资料证实 ,肺段以上PE占心血管病的 11% ,占肺血管病的第一位 Pulmonary embolism (PE) is a clinical and pathophysiological syndrome of pulmonary circulatory disorders caused by endogenous or exogenous emboli blocking the pulmonary artery or its branches. The disease with its morbidity, misdiagnosis rate and high mortality has become an important health care problem at home and abroad. Fu Wai Hospital, 90 consecutive cases of autopsy data confirmed above the lungs PE accounted for 11% of cardiovascular disease, pulmonary vascular disease accounted for the first