气胸是由于胸膜腔内积气导致肺脏部分或全部萎陷的一种疾病 ,可导致静脉回流受阻 ,张力性气胸会危及生命。气胸分类　 1 .创伤性气胸 :又分为开放性气胸和闭合性气胸 (钝伤或肺大泡破裂 ) ;2 .医源性气胸 :常见于锁骨下静脉穿刺插管损伤 ;自发性气胸属于闭合性气胸 ,又可再细分 Pneumothorax is a disease in which partial or complete collapse of the lungs occurs as a result of the accumulation of gas in the pleural cavity, which can result in obstruction of venous return and life-threatening pneumothorax. Pneumothorax classification 1. Traumatic pneumothorax: is divided into open pneumothorax and closed pneumothorax (blunt injury or bulla rupture); 2. iatrogenic pneumothorax: common in subclavian venipuncture intubation injury; spontaneous pneumothorax is closed Pneumothorax, but also subdivided