Continuous decontamination of an intensive care isolation room during patient occupancy using 405 nm light technology.
Continuous decontamination of an intensive care isolation room during patient occupancy using 405 nm light technology.
复制标题
DOI：
10.1177/1757177413483646
复制
发表时间：
2013-01-01
影响因子：
1.2
通讯作者：
Gettinby, G.
中科院分区：
文献类型：
--
作者：
Maclean, M.;Booth, M. G.;Gettinby, G.
重症监护病房（ICU）内的环境污染被认为是患者感染的来源，并且正在不断寻求改进的清洁和消毒方法。405 nm的可见光已被证明具有杀菌特性，该通信报告了使用天花板安装的405 nm光系统对已占用的ICU隔离室中的接触表面和空气进行连续环境消毒。在使用系统之前、期间和之后，对房间周围一系列接触表面上的细菌污染水平进行了评估。对于每项研究，照明装置在白天持续运行。结果表明，在使用405 nm光系统期间，细菌污染的空间分布在所有采样接触表面上几乎均匀地减少。汇总数据显示，实现了房间周围总体细菌污染的显著减少，细菌计数减少高达67%（p=0.0001），超过单独使用标准清洁和感染控制程序所实现的水平。使用405 nm光显著降低了ICU隔离室内几乎所有采样接触表面的环境污染。这在ICU中具有特别的益处，其中设备和其他“手接触”部位使得常规清洁变得困难，从而有助于保持更清洁的环境，并有助于减少来自环境源的交叉感染。
Environmental contamination within intensive care units (ICU) is recognised as a source of patient infection, and improved cleaning and disinfection methods are continually being sought. Visible light of 405 nm has been shown to have bactericidal properties, and this communication reports on the use of a ceiling-mounted 405 nm light system for continuous environmental disinfection of contact surfaces and air in an occupied ICU isolation room. Levels of bacterial contamination on a range of contact surfaces around the room were assessed before, during and after use of the system. For each study, the lighting units were operated continuously during daylight hours. Results demonstrate that the spatial distribution of bacterial contamination was reduced almost uniformly across all sampled contact surfaces during use of the 405 nm light system. Pooled data showed that significant reductions in overall bacterial contamination around the room were achieved, with bacterial counts reduced by up to 67% (p=0.0001) over and above that achieved with standard cleaning and infection control procedures alone. Use of 405 nm light significantly reduced environmental contamination across almost all sampled contact surfaces within the ICU isolation room. This has particular benefit in ICU where equipment and other 'hand-touch' sites make routine cleaning difficult, thus helping maintain a cleaner environment, and contributing to reducing cross-infection from environmental sources.