北京市西城区某医院胃镜清洗消毒效果分析

The effect of gastroscope disinfection in a hospital of Xicheng district in Beijing

目的了解医院胃镜清洗过程中不同节点的清洗消毒效果,验证生物膜清洗液的更换频率对清洗消毒效果的影响。方法 2017年,北京市某三甲医院胃镜室操作所用胃镜,分别于清洗过程中、消毒前、后对每条胃镜的活检、送气送水和负压吸引孔道进行采样,并且对胃镜清洗过程中使用的生物膜清洗剂进行采样,4 h内送实验室进行菌落总数计数和细菌种类分型鉴定。结果共采集胃镜56条,168份样本,胃镜清洗总无菌率为7.14%,其中活检、送气送水和负压吸引孔道无菌率分别为28.6%,35.7%和57.1%;胃镜消毒总合格率为96.4%。结论胃镜消毒后基本能达到标准要求,生物膜清洗液重复利用后微生物污染严重。

Objective To understand the disinfection effect of gastroscope in each procedure in a hospital, and to verify the disinfection effect of the replacement frequency of biofilm rinse fluid. Methods The gastroscopes of a tertiary grade A hospital in Beijing during 2017 were collected and tested. During the procedures of rinsing, before and after the disinfection, the biopsy duct, air duct, and negative pressure suction duct were sampled. And the rinse fluid of the biofilm was collected. All samples were sent to the laboratory within 4 hours to test the total number of colonies and to identify the bacterial species. Results In this study, 56 gastroscopes were included and 168 samples were obtained. Before disinfection, the total qualification rates of gastroscopy, biopsy duct, air duct, and negative pressure suction duct were 7.14%, 28.6%, 35.7% and 57.1%. The overall qualification rate of was 96.4%. Conclusion The disinfection of gastroscopes in the hospital can substantially meet the qualification. The disinfection qualification of the reutilized biofilm rinse fluid is low.