Original Article
Evaluation of disinfection effect of high-energy pulse ultraviolet disinfection equipment in medical institution settings
Sun Zhengchun, Zhu Jincai, Zhu Tingting, Qu Xiaorong, Li Nan, Zhao Yuxin, Wang Shuang, Yuan Xiaodong, Li Guoliang, Zhang Nengwei, Xing Yi, Yao Qi
Published 2024-06-06
Cite as Chin J Prev Med, 2024, 58(6): 857-861. DOI: 10.3760/cma.j.cn112150-20231220-00471
Abstract
ObjectiveTo evaluate the disinfection effect of high-energy pulse ultraviolet disinfection equipment in medical institution settings.
MethodsThe disinfection effect was evaluated through field tests and laboratory tests. Among them, 135 high-frequency contact points were selected from nine departments in the field test. Samples were collected before and after disinfection, and the disinfection effects of 75% alcohol wipes wiping disinfection, high-energy pulse ultraviolet disinfection robot disinfection and high-energy pulse ultraviolet handheld disinfection instrument were compared. In the laboratory test, 30 infected areas of the simulated test table were exposed to vertical ultraviolet irradiation and the bacterial-killing rate before and after disinfection was calculated.
ResultsIn the field test, the bacteria-killing rates of 75% alcohol wipes, high-energy pulse ultraviolet disinfection robot and high-energy pulse ultraviolet handheld disinfection instrument were 94.99%, 91.53% and 95.94%, respectively, and the difference was statistically significant. The disinfection effect of the high-energy pulse ultraviolet handheld disinfection instrument was better than that of the high-energy pulse ultraviolet disinfection robot (P values <0.05). In the laboratory test, the killing log value of Staphylococcus aureus and Escherichia coli on the carrier were both greater than 3.00. In the simulated field test, the killing log value of Staphylococcus aureus on the surface samples were 4.99.
ConclusionBoth the high-energy pulse ultraviolet handheld disinfection instrument and the high-energy pulse ultraviolet disinfection robot have good disinfection effects, which are similar to the disinfection effects of conventional 75% alcohol wipes.
Key words:
Ultraviolet rays; Disinfection; Hospitals; Evaluation studies
Contributor Information
Sun Zhengchun
Department of Infection Management and Disease Control, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing 100038, China
Zhu Jincai
Beike Huairou Green Environment Innovation Institute, Beijing 101499, China
Zhu Tingting
Department of Infection Management and Disease Control, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing 100038, China
Qu Xiaorong
Department of Orthopaedics of Shidao People′s Hospital, Rongcheng City, Rongcheng 264308, China
Li Nan
Department of Infection Management and Disease Control, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing 100038, China
Zhao Yuxin
Department of Infection Management and Disease Control, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing 100038, China
Wang Shuang
Department of Infection Management and Disease Control, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing 100038, China
Yuan Xiaodong
Department of Infection Management and Disease Control, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing 100038, China
Li Guoliang
School of Energy and Environmental Engineering, University of Science and Technology, Beijing 100083, China
Zhang Nengwei
Office of Beijing Shijitan Hospital affiliated to Capital Medical University,Beijing 100038, China
Xing Yi
School of Energy and Environmental Engineering, University of Science and Technology, Beijing 100083, China
Yao Qi
Office of Beijing Shijitan Hospital affiliated to Capital Medical University,Beijing 100038, China
