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本文对２４例气管切开术后危重病人呼吸道的菌群进行了分析，发现绿脓杆菌，金黄色葡萄球菌，肺炎杆菌，硝酸盐阴性杆菌所致感染最为常见。院内肺部感染率达６２．５％。混和细菌感染程度与置管时间相关，气切后各种细菌出现时间有差别。本文又对有效抗生素应用及预防措施进行了讨论。
In this paper, 24 cases of critically ill patients after tracheotomy respiratory tract flora were analyzed and found that Pseudomonas aeruginosa, Staphylococcus aureus, Klebsiella pneumoniae, nitrate-negative bacteria caused the most common infections. Nosocomial lung infection rate of 62.5%. The degree of mixed bacterial infection was correlated with the time of catheterization, and there was a difference in the appearance time of various bacteria after gas-cutting. This article also discusses the use of effective antibiotics and preventive measures.