绿脓杆菌是呼吸道常见的条件致病菌,常在机体免疫力低下,尤其在患有某种肺部疾病时导致下呼吸道感染。慢性阻塞性肺疾病(COPD)患者是绿脓杆菌的易感人群。被感染者病情严重,细菌易产生获得性耐药,加上它不易被呼吸道防御机制杀灭,所以使治疗很困难,病死率达30%以上[1]。我们在2 Pseudomonas aeruginosa is a common respiratory disease pathogenic bacteria, often in the body immunity is low, especially in the case of a lung disease caused by lower respiratory tract infection. Chronic obstructive pulmonary disease (COPD) patients are susceptible to Pseudomonas aeruginosa. The infected person is in a serious condition and the bacteria are apt to acquire acquired drug resistance. In addition, it is not easily killed by the respiratory defense mechanism. Therefore, the treatment is very difficult with a mortality rate of over 30% [1]. We are at 2