肺栓塞 (Ｐｕｌｍｏｎａｒｙｅｍｂｏｌｉｓｍ ,ＰＥ)是内源性或外源性栓子堵塞肺动脉或分支引起肺循环障碍的临床综合征 ,发生肺出血或坏死者称为肺梗塞。美国每年新发病人数约 60万 ,其中近 2 0 %死亡 ,占死亡原因的第 3位 ,仅次于肿瘤和心肌梗塞。迄今为止 ,我国尚无这方面 Pulmonary embolism (Pulmonary Embolism, PE) is a clinical syndrome of endogenous or exogenous emboli plug the pulmonary artery or branches of the pulmonary circulation disorder, pulmonary hemorrhage or necrosis known as pulmonary infarction. The number of new cases in the United States is about 600,000 each year, of which nearly 20% are fatal, accounting for the third leading cause of death after cancer and myocardial infarction. So far, our country does not have this aspect yet