一般认为,绿脓杆菌系条件性致病菌。健康人对绿脓杆菌的定居和感染具有很强的天然抵抗力。机体抵抗力低下时,可导致感染。绿脓杆菌感染多见于严重创伤、烧伤、器械应用(如气管和静脉插管等)、糖尿病、肾功衰竭、肿瘤以及应用激素、细胞毒性药物和免疫抑制剂治疗的患者。在革兰氏阴性杆菌感染中,由绿脓杆菌引起者虽比大肠 Generally believed that Pseudomonas aeruginosa is a conditional pathogen. Healthy people have strong natural resistance to the colonization and infection of Pseudomonas aeruginosa. Low body resistance can lead to infection. Pseudomonas aeruginosa infection more common in severe trauma, burns, device applications (such as trachea and vein catheterization, etc.), diabetes, renal failure, cancer and the application of hormones, cytotoxic drugs and immunosuppressive agents in patients. Gram-negative bacilli in the infection, caused by Pseudomonas aeruginosa although than the large intestine