Manual Operated Ultraviolet Surface Decontamination for Healthcare Environments

Corrêa, Thaila Quatrini; Blanco, Kate Cristina; Inada, Natália Mayumi; Hortenci, Maisa de Fátima; Costa, André Oliveira; Silva, Evaine da Silveira; Gimenes, Patricia Pereira da Costa; Pompeu, Soraya; Silva, Raphael Luiz de Holanda E; Figueiredo, Walter Manso; Bagnato, Vanderlei Salvador

doi:10.1089/pho.2017.4298

Cited by 19 publications

(13 citation statements)

References 13 publications

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“…Other settings where the applicability of UVGI has been evaluated include burn units [69], hyperbaric chambers [27], radiology rooms [29], oncology units [35], and clinical labs within a hospital [50]. Use of UVGI technologies in hallways or other public areas was only reported in a small number of studies [28,46]. Where the setting was not specifically named [24,26], or where various surfaces are described but the room was not named [46], the study was classified in the "Other" column of Table 3.…”

Section: Clinical Settings Where Uvgi Is Usedmentioning

confidence: 99%

Hospital surface disinfection using ultraviolet germicidal irradiation technology: A review

Scott

Joshi

McGinn

2022

Healthcare Tech Letters

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Ultraviolet germicidal irradiation (UVGI) technologies have emerged as a promising alternative to biocides as a means of surface disinfection in hospitals and other healthcare settings. This paper reviews the methods used by researchers and clinicians in deploying and evaluating the efficacy of UVGI technology. The type of UVGI technology used, the clinical setting where the device was deployed, and the methods of environmental testing that the researchers followed are investigated. The findings suggest that clinical UVGI deployments have been growing steadily since 2010 and have increased dramatically since the start of the COVID‐19 pandemic. Hardware platforms and operating procedures vary considerably between studies. Most studies measure efficacy of the technology based on the objective measurement of bacterial bioburden reduction; however, studies conducted over longer durations have examined the impact of UVGI on the reduction of healthcare associated infections (HCAIs). Future trends include increased automation and the use of UVGI technologies that are safer for use around people. Although existing evidence seems to support the efficacy of UVGI as a tool capable of reducing HCAIs, more research is needed to measure the magnitude of these effects and to establish recommended best practices.

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Section: Clinical Settings Where Uvgi Is Usedmentioning

confidence: 99%

Hospital surface disinfection using ultraviolet germicidal irradiation technology: A review

Scott

Joshi

McGinn

2022

Healthcare Tech Letters

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“…Following irradiation, SMs and FFRs were unloaded and placed in individual bags [23]. This treatment did not alter the filtration capacity of the mask [1,7,15].…”

Section: Uv Germicidal Irradiationmentioning

confidence: 99%

“…aureus by a factor of 3.2×10 6 and P. aeruginosa by a factor of 2.5×10 5 on a pre-contaminated surface [15].…”

Section: Introductionmentioning

confidence: 99%

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Effect of five decontamination methods on face masks and filtering facepiece respirators contaminated with Staphylococcus aureus and Pseudomonas aeruginosa

Martínez

Crèvecoeur

Dams

et al. 2022

Access Microbiology

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Introduction. In the context of the global pandemic due to SARS-CoV-2, procurement of personal protective equipment during the crisis was problematic. The idea of reusing and decontaminating personal surgical masks in facilities was explored in order to avoid the accumulation of waste and overcome the lack of equipment. Hypothesis. Our hypothesis is that this work will show the decontamination methods assessed are effective for bacteria, such as Staphylococcus aureus and Pseudomonas aeruginosa . Aim. We aim to provide information about the effects of five decontamination procedures (UV treatment, dry heat, vaporized H2O2, ethanol treatment and blue methylene treatment) on S. aureus and P. aeruginosa . These bacteria are the main secondary bacterial pathogens responsible for lung infections in the hospital environment. Methodology. The surgical masks and the filtering facepiece respirators were inoculated with two bacterial strains ( S. aureus ATCC 29213 and P. aeruginosa S0599) and submitted to five decontamination treatments: vaporized H2O2 (VHP), UV irradiation, dry heat treatment, ethanol bath treatment and blue methylene treatment. Direct and indirect microbiology assessments were performed on three positive controls, five treated masks and one negative control. Results. The five decontaminations showed significant (P<0.05) but different degrees of reductions of S. aureus and P. aeruginosa . VHP, dry heat treatment and ethanol treatment adequately reduced the initial contamination. The 4 min UV treatment allowed only a reduction to five orders of magnitude for face mask respirators. The methylene blue treatment induced a reduction to two orders of magnitude. Conclusions. The three methods that showed a log10 reduction factor of 6 were the dry heat method, VHP and ethanol bath treatment. These methods are effective and their establishment in the medical field are easy but require economic investment.

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“…It is important to note that acute radiation syndrome (followed by death) can be induced in humans at a dose of around 5 Gy (Cucinotta and Durante, 2006;Hellweg and Baumstark-Khan, 2007). Because UV-C greatly damages cells and biomolecules, monochromatic UV-C radiation (254 nm) is commonly used on Earth for food sterilization, in hospital surface disinfection (Corrêa et al, 2017;Santos and de Castro, 2021), or in microbiology laboratories, for instance, in safety cabinets where the UV lamp is used for around 15 min, reaching a UV dose of approximately 2000 J/m 2 (Begum et al, 2009). Also Xrays, gamma rays and electron-beam (e-beam) radiation have been extensively used in sterilization procedures of medical devices, pharmaceuticals and food (Harrell et al, 2018;Hasanain et al, 2014;Moosekian et al, 2012;Munir and Federighi, 2020;Ravindran and Jaiswal, 2019).…”

Section: Space Radiationmentioning

confidence: 99%

Morphological and molecular adaptation of Aspergillus niger to simulated spaceflight and Mars-like conditions

Filipa¹

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People have asked me why I came to Germany. The only reason was this: I wanted to become an Astrobiologist. I had no idea what was waiting for me in Cologne. It was hard in the beginning, to set in a new country, new language, a new lab, and new friends. It was also the first time having my own apartment. What an adventure these 4 years were. Now I know I have grown exponentially, and I have a lot of people to thank for that growth. To Felix,

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Manual Operated Ultraviolet Surface Decontamination for Healthcare Environments

Abstract: The study highlights the development and successful application of a new portable device that can reduce the risk of contamination in health settings. Our results suggest that Surface UV is efficient and may be an alternative decontamination method.

Cited by 19 publications

References 13 publications

Hospital surface disinfection using ultraviolet germicidal irradiation technology: A review

Hospital surface disinfection using ultraviolet germicidal irradiation technology: A review

Effect of five decontamination methods on face masks and filtering facepiece respirators contaminated with Staphylococcus aureus and Pseudomonas aeruginosa

Morphological and molecular adaptation of Aspergillus niger to simulated spaceflight and Mars-like conditions

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