Department of Infection Prevention and Control, Maury Regional Health Center, Columbia, TN.
Kinzel-Hamilton, Louisville, KY.
Am J Infect Control. 2019 Jul;47(7):804-810. doi: 10.1016/j.ajic.2018.12.002. Epub 2019 Jan 10.
A growing body of research has demonstrated that manual cleaning and disinfection of the operating room (OR) is suboptimal. Residual environmental contamination may pose an infection risk to the surgical wound. This study evaluates the impact of a visible-light continuous environmental disinfection (CED) system on microbial surface contamination and surgical site infections (SSI) in an OR.
Samples from 25 surfaces within 2 contiguous ORs sharing an air supply were obtained after manual cleaning on multiple days before and after a visible-light CED system installation in 1 of the ORs. Samples were incubated and enumerated as total colony-forming units. SSIs in both ORs, and a distant OR, were tracked for 1 year prior to and 1 year after the visible-light CED system installation.
There was an 81% (P = .017) and 49% (P = .015) reduction in total colony-forming units after the visible-light CED system installation in the OR in which the system was installed, and in the contiguous OR, respectively. In the OR with the visible-light CED system, SSIs decreased from 1.4% in the year prior to installation to 0.4% following installation (P = .029).
A visible-light CED system, used in conjunction with manual cleaning, resulted in significant reductions in both microbial surface contamination and SSIs in the OR.
越来越多的研究表明，手术室（OR）的手动清洁和消毒效果并不理想。残留的环境污染可能会对手术伤口造成感染风险。本研究评估了可见光持续环境消毒（CED）系统对 OR 中微生物表面污染和手术部位感染（SSI）的影响。
在 1 个 OR 中安装可见光 CED 系统前后的多天内，对 2 个相邻 OR 中的 25 个表面进行了手动清洁后，从这些表面采集样本。对样本进行孵育和计数，得到总菌落形成单位数。在安装可见光 CED 系统之前和之后的 1 年中，对两个 OR 和一个较远的 OR 中的 SSI 进行了跟踪。
在安装可见光 CED 系统的 OR 中，总菌落形成单位数分别减少了 81%（P=0.017）和 49%（P=0.015），在相邻的 OR 中。在安装了可见光 CED 系统的 OR 中，SSI 从安装前的 1.4%降至安装后的 0.4%（P=0.029）。
可见光 CED 系统与手动清洁相结合，可显著降低 OR 中的微生物表面污染和 SSI 发生率。
