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Commonly available but highly effective protection against SARS-CoV-2 during gastrointestinal endoscopies
R. Keil, Š. Hlava, P. Stanovský, V. Ždímal, J. Šťovíček, M. Trojánek, J. Drábek, B. Frýbová, V. Petráček, M. Wasserbauer
Language English Country United States
Document type Journal Article, Research Support, Non-U.S. Gov't
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- MeSH
- COVID-19 * prevention & control transmission MeSH
- Endoscopy, Gastrointestinal * MeSH
- Humans MeSH
- Protective Clothing * MeSH
- Infectious Disease Transmission, Patient-to-Professional prevention & control MeSH
- SARS-CoV-2 * MeSH
- Check Tag
- Humans MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
BACKGROUND AND AIMS: SARS-CoV-2 is a worldwide serious health problem. The aim of this study was to demonstrate the number of potentially infectious particles present during endoscopic procedures and find effective tools to eliminate the risks of SARS-CoV-2 infection while performing them. METHODS: An experimental model which focused on aerosol problematics was made in a specialized laboratory. This model simulated conditions present during endoscopic procedures and monitored the formation of potentially infectious fluid particles from the patient's body, which pass through the endoscope and are then released into the environment. For this reason, we designed and tested a prototype of a protective cover for the endoscope's control body to prevent the release and spread of these fluid particles from its working channel. We performed measurements with and without the protective cover of the endoscope's control body. RESULTS: It was found that liquid coming through the working channel of the endoscope with forceps or other instruments inside generates droplets with a diameter in the range of 0.1-1.1 mm and an initial velocity of up to 0.9 m/s. The average number of particles per measurement per whole measured area without a protective cover on the endoscope control body was 51.1; with this protective cover on, the measurement was 0.0, p<0.0001. CONCLUSIONS: Our measurements proved that fluid particles are released from the working channel of an endoscope when forceps are inserted. A special protective cover for the endoscope control body, made out of breathable material (surgical cap) and designed by our team, was found to eliminate this release of potentially infectious fluid particles.
References provided by Crossref.org
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