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Gas leakages from gastrointestinal endoscopy system—its visualization and semi-quantification utilizing schlieren optical system in the swine models
BACKGROUND AND AIMS: With the global epidemic of SARS-CoV-2, there has been a growing concern regarding the risk of aerosol exposure to healthcare workers and patients during medical/surgical interventions. The Schlieren device is capable of visualizing fine gas-flows by using refractive index diffe...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9543929/ https://www.ncbi.nlm.nih.gov/pubmed/36207649 http://dx.doi.org/10.1007/s00464-022-09668-y |
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author | Ishida, Tomo Hayashi, Yoshinori Saito, Takuro Yamamoto, Kazuyoshi Yamashita, Kotarou Tanaka, Koji Makino, Tomoki Takahashi, Tsuyoshi Kurokawa, Yukinori Eguchi, Hidetoshi Doki, Yuichiro Nakajima, Kiyokazu |
author_facet | Ishida, Tomo Hayashi, Yoshinori Saito, Takuro Yamamoto, Kazuyoshi Yamashita, Kotarou Tanaka, Koji Makino, Tomoki Takahashi, Tsuyoshi Kurokawa, Yukinori Eguchi, Hidetoshi Doki, Yuichiro Nakajima, Kiyokazu |
author_sort | Ishida, Tomo |
collection | PubMed |
description | BACKGROUND AND AIMS: With the global epidemic of SARS-CoV-2, there has been a growing concern regarding the risk of aerosol exposure to healthcare workers and patients during medical/surgical interventions. The Schlieren device is capable of visualizing fine gas-flows by using refractive index differences in the medium. We aimed to reveal the existence of gas leakage from gastro-intestinal endoscopy system by utilizing Schlieren device and to clarify the factors which relates to the amount of gas leakage. METHODS: The experiments were performed on the excised swine stomach while maintaining a constant pressure environment in the stomach. The System Schlieren (SS100,KatoKoken) was used to visualize possible gas leakages from forceps plugs of endoscopy. We attempted to semi-quantify the leakage by referring to the image of the gas from the forceps plug and by measuring the initial velocity and diffusion area of the leakage. RESULTS: Regardless of the type of forceps plugs, a certain amount of leakage was detected during both insertion and removal of forceps. The initial velocity and the diffusion area of the leakage increased with the increase in intragastric pressure. Semi-quantitative comparison showed that there was a difference in the amount of gas leakage among various forceps plugs. Furthermore, the amount of gas leakage was significantly greater in the forceps plugs that were used repeatedly. CONCLUSION: It was possible to visualize gas leakages from the gastrointestinal endoscope system using the Schlieren optical device. Avoiding too high intragastric pressure and not using deteriorated plugs may reduce the risk of aerosol exposure. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00464-022-09668-y. |
format | Online Article Text |
id | pubmed-9543929 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-95439292022-10-11 Gas leakages from gastrointestinal endoscopy system—its visualization and semi-quantification utilizing schlieren optical system in the swine models Ishida, Tomo Hayashi, Yoshinori Saito, Takuro Yamamoto, Kazuyoshi Yamashita, Kotarou Tanaka, Koji Makino, Tomoki Takahashi, Tsuyoshi Kurokawa, Yukinori Eguchi, Hidetoshi Doki, Yuichiro Nakajima, Kiyokazu Surg Endosc Original Article BACKGROUND AND AIMS: With the global epidemic of SARS-CoV-2, there has been a growing concern regarding the risk of aerosol exposure to healthcare workers and patients during medical/surgical interventions. The Schlieren device is capable of visualizing fine gas-flows by using refractive index differences in the medium. We aimed to reveal the existence of gas leakage from gastro-intestinal endoscopy system by utilizing Schlieren device and to clarify the factors which relates to the amount of gas leakage. METHODS: The experiments were performed on the excised swine stomach while maintaining a constant pressure environment in the stomach. The System Schlieren (SS100,KatoKoken) was used to visualize possible gas leakages from forceps plugs of endoscopy. We attempted to semi-quantify the leakage by referring to the image of the gas from the forceps plug and by measuring the initial velocity and diffusion area of the leakage. RESULTS: Regardless of the type of forceps plugs, a certain amount of leakage was detected during both insertion and removal of forceps. The initial velocity and the diffusion area of the leakage increased with the increase in intragastric pressure. Semi-quantitative comparison showed that there was a difference in the amount of gas leakage among various forceps plugs. Furthermore, the amount of gas leakage was significantly greater in the forceps plugs that were used repeatedly. CONCLUSION: It was possible to visualize gas leakages from the gastrointestinal endoscope system using the Schlieren optical device. Avoiding too high intragastric pressure and not using deteriorated plugs may reduce the risk of aerosol exposure. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00464-022-09668-y. Springer US 2022-10-07 2023 /pmc/articles/PMC9543929/ /pubmed/36207649 http://dx.doi.org/10.1007/s00464-022-09668-y Text en © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022, Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic. |
spellingShingle | Original Article Ishida, Tomo Hayashi, Yoshinori Saito, Takuro Yamamoto, Kazuyoshi Yamashita, Kotarou Tanaka, Koji Makino, Tomoki Takahashi, Tsuyoshi Kurokawa, Yukinori Eguchi, Hidetoshi Doki, Yuichiro Nakajima, Kiyokazu Gas leakages from gastrointestinal endoscopy system—its visualization and semi-quantification utilizing schlieren optical system in the swine models |
title | Gas leakages from gastrointestinal endoscopy system—its visualization and semi-quantification utilizing schlieren optical system in the swine models |
title_full | Gas leakages from gastrointestinal endoscopy system—its visualization and semi-quantification utilizing schlieren optical system in the swine models |
title_fullStr | Gas leakages from gastrointestinal endoscopy system—its visualization and semi-quantification utilizing schlieren optical system in the swine models |
title_full_unstemmed | Gas leakages from gastrointestinal endoscopy system—its visualization and semi-quantification utilizing schlieren optical system in the swine models |
title_short | Gas leakages from gastrointestinal endoscopy system—its visualization and semi-quantification utilizing schlieren optical system in the swine models |
title_sort | gas leakages from gastrointestinal endoscopy system—its visualization and semi-quantification utilizing schlieren optical system in the swine models |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9543929/ https://www.ncbi.nlm.nih.gov/pubmed/36207649 http://dx.doi.org/10.1007/s00464-022-09668-y |
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