Evaluation of an Ultraviolet C (UVC) Light-Emitting Device for Disinfection of High Touch Surfaces in Hospital Critical Areas
Evaluation of an Ultraviolet C (UVC) Light-Emitting Device for Disinfection of High Touch Surfaces in Hospital Critical Areas
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DOI：
10.3390/ijerph16193572
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发表时间：
2019-10-01
影响因子：
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通讯作者：
Privitera, Gaetano Pierpaolo
中科院分区：
文献类型：
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作者：
Casini, Beatrice;Tuvo, Benedetta;Privitera, Gaetano Pierpaolo
环境清洁和消毒的实施已被证明可以减少与卫生保健相关的感染的发生率。评价了在现行标准操作规程（SOP）后应用脉冲氙基紫外光无接触消毒系统（PX-UVC）的终端室消毒增强策略的效果。在一家教学医院，在不同关键区域的五个高接触表面上，在清洁和消毒程序（345个采样点）前后立即评估了减少细菌总数（TBC）和消除高度关注微生物的有效性。PX-UVC处理后仅显示18%（15/85）的阳性样本，而SOP处理后为63%（72/115）。在没有手动清洁和应用化学消毒剂的情况下也观察到PX-UVC的有效性。根据意大利工人赔偿管理局提出的卫生标准，手术室80个表面中有9个（11%）在SOP后显示TBC >= 15 CFU/24 cm（2），而所有样品均符合SOP加PX-UVC消毒的要求。仅在SOP后分离艰难梭菌（CD）孢子和肺炎克雷伯菌（KPC）。标准清洁和消毒程序的实施与PX-UVC处理的整合在减少卫生故障和控制高度关注的微生物对环境的污染方面都取得了有效的结果。
Implementation of environmental cleaning and disinfection has been shown to reduce the incidences of healthcare-associated infections. The effect of an enhanced strategy for terminal room disinfection, applying the pulsed xenon-based ultraviolet light no-touch disinfection systems (PX-UVC) after the current standard operating protocol (SOP) was evaluated. In a teaching hospital, the effectiveness in reducing the total bacterial count (TBC) and in eliminating high-concern microorganisms was assessed on five high-touch surfaces in different critical areas, immediately pre- and post-cleaning and disinfection procedures (345 sampling sites). PX-UVC showed only 18% (15/85) of positive samples after treatment compared to 63% (72/115) after SOP. The effectiveness of PX-UVC was also observed in the absence of manual cleaning and application of a chemical disinfectant. According to the hygienic standards proposed by the Italian Workers Compensation Authority, 9 of 80 (11%) surfaces in operating rooms showed TBC >= 15 CFU/24 cm(2) after the SOP, while all samples were compliant applying the SOP plus PX-UVC disinfection. Clostridium difficile (CD) spores and Klebsiella pneumoniae (KPC) were isolated only after the SOP. The implementation of the standard cleaning and disinfection procedure with the integration of the PX-UVC treatment had effective results in both the reduction of hygiene failures and in control environmental contamination by high-concern microorganisms.