烧伤病区铜绿假单胞菌流行病学调查

目的　探讨烧伤病区内铜绿假单胞菌的流行病学分布及其医院感染的危险因素。方法　采用病房现场采样、血清分型 ,了解铜绿假单胞菌的分布 ,并用 1∶1配对病例 -对照的研究方法 ,进行医院感染危险因素的单因素和Logistic回归多因素的分析。结果　采集的 12 5 8份样本共检出铜绿假单胞菌 6 6株 ,平均检出率为 5 2 % ,但从患者各种标本检出的铜绿假单胞菌与环境中铜绿假单胞菌的血清型差异较大。结论　铜绿假单胞菌的医院感染与环境中的铜绿假单胞菌关系不大 ,外源性感染并非医院感染的主要途径 ;Logistic回归分析发现 ,包扎、受压及烧伤严重程度等为烧伤医院感染的危险因素。

Study of epidemiology and risk factors of nosocomial systemic Pseudomonas aeruginosa infection in burn ward

Objective To discuss the epidemiological distribution of Pseudomonas aeruginosa(PA) and evaluate the risk factors of nosocomial systemic PA infection.Methods The PA strains were isolated from the patients and the environment. A matched case-control study was conducted to investigate risk factors of nosocomical infection caused by PA.Results Sixty six strains of PA were isolated from 1 258 specimens, the average isolated rate was 5.2%, there was distinction of PA strains from patients and environment.Conclusion It's unimportant of PA existing in environment in nosocomial infection. The multivariable conditional Logistic regression analysis shows that the factor of bandaging, compression and serious burn were the risk factors of nosocomial systemic PA infection in burn ward.