大咯血可并发窒息或出血性休克 ,是危及生命的急诊症状 ,病死率达 5 0 %～ 10 0 % [1] 。急诊科作为大咯血病人的主要首诊地 ,医生积极正确的处理对提高其救治成功率具有重要意义 ;尤其对某些肺结构和功能无广泛严重损害的大咯血病人 ,如血管畸形、肺隔离症、肺脓肿、肺包虫病 Severe hemoptysis can be complicated by suffocation or hemorrhagic shock, life-threatening emergency symptoms, the mortality rate of 50% ~ 100% [1]. Emergency department as a major first diagnosis of hemoptysis patients, the doctor’s correct and correct treatment to improve the success rate of its treatment is of great significance; especially for some pulmonary structure and function of patients with severe hemoptysis without serious damage, such as vascular malformations, pulmonary isolation Disease, lung abscess, pulmonary echinococcosis