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UV light-based reprocessing of flexible endoscopes without working channel in Oto-Rhino-Laryngology: an effective method?

BACKGROUND: Reprocessing of flexible endoscopes (FEs) is often expensive, time consuming, and becomes increasingly complex, due to rising demands of hygiene. After beneficial results in reprocessing of rigid endoscopes using Impelux™ UV-C light technology, we tested the same method for reprocessing...

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Autores principales: Rudhart, Stefan A., Günther, Frank, Dapper, Laura, Thangavelu, Kruthika, Geisthoff, Urban W., Stankovic, Petar, Wilhelm, Thomas, Stuck, Boris A., Hoch, Stephan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8382609/
https://www.ncbi.nlm.nih.gov/pubmed/33713189
http://dx.doi.org/10.1007/s00405-021-06737-1
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author Rudhart, Stefan A.
Günther, Frank
Dapper, Laura
Thangavelu, Kruthika
Geisthoff, Urban W.
Stankovic, Petar
Wilhelm, Thomas
Stuck, Boris A.
Hoch, Stephan
author_facet Rudhart, Stefan A.
Günther, Frank
Dapper, Laura
Thangavelu, Kruthika
Geisthoff, Urban W.
Stankovic, Petar
Wilhelm, Thomas
Stuck, Boris A.
Hoch, Stephan
author_sort Rudhart, Stefan A.
collection PubMed
description BACKGROUND: Reprocessing of flexible endoscopes (FEs) is often expensive, time consuming, and becomes increasingly complex, due to rising demands of hygiene. After beneficial results in reprocessing of rigid endoscopes using Impelux™ UV-C light technology, we tested the same method for reprocessing of FEs without working channel. MATERIALS AND METHODS: Testing was performed on FEs without working channel after routine clinical use (transnasal flexible endoscopy). Disinfection consisted of mechanical precleaning and 60 s exposure to Impelux™ UV-C light technology. Bacterial contamination was tested on 50 FEs before and after disinfection. Further 50 FEs regarding protein residuals. The absolute effectiveness of the D60 was tested on 50 test bodies (RAMS) with a standardized contamination of 10(7) colony-forming units (CFU) of Enterococcus faecium. RESULTS: The FEs were contaminated with a high average value of 916.7 CFU (± 1057 CFU) after clinical usage. After reprocessing, an average contamination of 2.8 CFU (± 1.6) on 14% (n = 7) of the FEs was detected consisting of non-pathogenic species, the remaining FE were sterile. After reprocessing, all FEs were protein-free (< 1 μg). The artificially contaminated test bodies showed no remaining bacterial contamination after disinfection, resulting in an average absolute germ reduction of about 10(7) CFU. CONCLUSION: Impelux™ UV-C light technology efficiently reduces bacterial contamination of FEs and might be useful in daily practice.
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spelling pubmed-83826092021-09-09 UV light-based reprocessing of flexible endoscopes without working channel in Oto-Rhino-Laryngology: an effective method? Rudhart, Stefan A. Günther, Frank Dapper, Laura Thangavelu, Kruthika Geisthoff, Urban W. Stankovic, Petar Wilhelm, Thomas Stuck, Boris A. Hoch, Stephan Eur Arch Otorhinolaryngol Miscellaneous BACKGROUND: Reprocessing of flexible endoscopes (FEs) is often expensive, time consuming, and becomes increasingly complex, due to rising demands of hygiene. After beneficial results in reprocessing of rigid endoscopes using Impelux™ UV-C light technology, we tested the same method for reprocessing of FEs without working channel. MATERIALS AND METHODS: Testing was performed on FEs without working channel after routine clinical use (transnasal flexible endoscopy). Disinfection consisted of mechanical precleaning and 60 s exposure to Impelux™ UV-C light technology. Bacterial contamination was tested on 50 FEs before and after disinfection. Further 50 FEs regarding protein residuals. The absolute effectiveness of the D60 was tested on 50 test bodies (RAMS) with a standardized contamination of 10(7) colony-forming units (CFU) of Enterococcus faecium. RESULTS: The FEs were contaminated with a high average value of 916.7 CFU (± 1057 CFU) after clinical usage. After reprocessing, an average contamination of 2.8 CFU (± 1.6) on 14% (n = 7) of the FEs was detected consisting of non-pathogenic species, the remaining FE were sterile. After reprocessing, all FEs were protein-free (< 1 μg). The artificially contaminated test bodies showed no remaining bacterial contamination after disinfection, resulting in an average absolute germ reduction of about 10(7) CFU. CONCLUSION: Impelux™ UV-C light technology efficiently reduces bacterial contamination of FEs and might be useful in daily practice. Springer Berlin Heidelberg 2021-03-13 2021 /pmc/articles/PMC8382609/ /pubmed/33713189 http://dx.doi.org/10.1007/s00405-021-06737-1 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Miscellaneous
Rudhart, Stefan A.
Günther, Frank
Dapper, Laura
Thangavelu, Kruthika
Geisthoff, Urban W.
Stankovic, Petar
Wilhelm, Thomas
Stuck, Boris A.
Hoch, Stephan
UV light-based reprocessing of flexible endoscopes without working channel in Oto-Rhino-Laryngology: an effective method?
title UV light-based reprocessing of flexible endoscopes without working channel in Oto-Rhino-Laryngology: an effective method?
title_full UV light-based reprocessing of flexible endoscopes without working channel in Oto-Rhino-Laryngology: an effective method?
title_fullStr UV light-based reprocessing of flexible endoscopes without working channel in Oto-Rhino-Laryngology: an effective method?
title_full_unstemmed UV light-based reprocessing of flexible endoscopes without working channel in Oto-Rhino-Laryngology: an effective method?
title_short UV light-based reprocessing of flexible endoscopes without working channel in Oto-Rhino-Laryngology: an effective method?
title_sort uv light-based reprocessing of flexible endoscopes without working channel in oto-rhino-laryngology: an effective method?
topic Miscellaneous
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8382609/
https://www.ncbi.nlm.nih.gov/pubmed/33713189
http://dx.doi.org/10.1007/s00405-021-06737-1
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