呼吸病区铜绿假单胞菌医院感染的流行病学研究

The epidemiology of Pseudomonas aeruginosa nosocomial infection in the respiratory ward

目的为了解铜绿假单胞菌医院感染的流行病学。方法用血清型和抗菌谱联合分型方法，对患者分离株和环境分离株从检出时间、地点或部位进行动态分析。结果２１２３份样本共检出铜绿假单胞菌１７６株，分离率为０．８％～５７．１％；患者之间、患者与环境及医护人员间检出的铜绿假单胞菌未见有关联。结论铜绿假单胞菌广泛存在于呼吸病房的患者及环境中；铜绿假单胞菌医院感染，外源性因素不是主要的，飞沫、空气不是ＰＡ院内肺炎传播途径。

Objective Toevaluate the epidemiology of Pseudomonas acruginosa(PA) nosocomial infection.Methods Serological typing in combination with antibiograms, the isolated PA strains from the patients the environment were analyzed dynamically according to the detected time, environmental site as well as from which part of the patient. Results 176 strains of PAs were isolatecl from 2123 specimens, the isolated rates rarged from 0.8% to 57.1%; there was No relation on PA strains among the persomel, the patients and between the patients and the environment. Conclusion It indicates that PAs exist in the respiratory ward extensively and exogenous infection is unimportant in nosocomial infection. 