Evaluation of face shields used during aerosol generating procedures
Abstract Transnasal flexible laryngoscopy is considered an aerosol generating procedure. A negative pressure face shield (NPFS) was developed to control aerosol from the patient during laryngoscopy. The purpose of this study was to determine the effectiveness of the NPFS at controlling virus aerosol...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-42403-8 |
| _version_ | 1797576887236558848 |
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| author | Alessandra A. Pratt Grant D. Brown Jarrett E. Walsh Henry T. Hoffman Matthew W. Nonnenmann |
| author_facet | Alessandra A. Pratt Grant D. Brown Jarrett E. Walsh Henry T. Hoffman Matthew W. Nonnenmann |
| author_sort | Alessandra A. Pratt |
| collection | DOAJ |
| description | Abstract Transnasal flexible laryngoscopy is considered an aerosol generating procedure. A negative pressure face shield (NPFS) was developed to control aerosol from the patient during laryngoscopy. The purpose of this study was to determine the effectiveness of the NPFS at controlling virus aerosol compared to a standard disposable plastic face shield. The face shields were placed on a simulated patient coughing machine. MS2 bacteriophage was used as a surrogate for SARS-CoV-2 and was aerosolized using the coughing machine. The aerosolized virus was sampled on the inside and outside of the face shields. The virus aerosol concentration was not significantly different between the inside and outside of the traditional plastic face shield (p = 0.12). However, the particle concentrations across all particle sizes measured were significantly decreased outside the face shield. The virus and particle concentrations were significantly decreased (p < 0.01) outside the NPFS operating at a flow rate of 38.6 L per minute (LPM). When the NPFS was operated at 10 LPM, virus concentrations were not significantly different (p = 0.09) across the face shield. However, the number particle concentrations across all particle sizes measured were significantly different (p < 0.05). |
| first_indexed | 2024-03-10T22:01:09Z |
| format | Article |
| id | doaj.art-27a8b66d75d74bcf977dd423603619f0 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-10T22:01:09Z |
| publishDate | 2023-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-27a8b66d75d74bcf977dd423603619f02023-11-19T12:57:21ZengNature PortfolioScientific Reports2045-23222023-09-0113111010.1038/s41598-023-42403-8Evaluation of face shields used during aerosol generating proceduresAlessandra A. Pratt0Grant D. Brown1Jarrett E. Walsh2Henry T. Hoffman3Matthew W. Nonnenmann4Department of Occupational and Environmental Health, University of IowaDepartment of Biostatistics, University of IowaDepartment of Otolaryngology, Carver College of Medicine, University of IowaDepartment of Otolaryngology, Carver College of Medicine, University of IowaDepartment of Environmental, Agricultural and Occupational Health, University of Nebraska Medical CenterAbstract Transnasal flexible laryngoscopy is considered an aerosol generating procedure. A negative pressure face shield (NPFS) was developed to control aerosol from the patient during laryngoscopy. The purpose of this study was to determine the effectiveness of the NPFS at controlling virus aerosol compared to a standard disposable plastic face shield. The face shields were placed on a simulated patient coughing machine. MS2 bacteriophage was used as a surrogate for SARS-CoV-2 and was aerosolized using the coughing machine. The aerosolized virus was sampled on the inside and outside of the face shields. The virus aerosol concentration was not significantly different between the inside and outside of the traditional plastic face shield (p = 0.12). However, the particle concentrations across all particle sizes measured were significantly decreased outside the face shield. The virus and particle concentrations were significantly decreased (p < 0.01) outside the NPFS operating at a flow rate of 38.6 L per minute (LPM). When the NPFS was operated at 10 LPM, virus concentrations were not significantly different (p = 0.09) across the face shield. However, the number particle concentrations across all particle sizes measured were significantly different (p < 0.05).https://doi.org/10.1038/s41598-023-42403-8 |
| spellingShingle | Alessandra A. Pratt Grant D. Brown Jarrett E. Walsh Henry T. Hoffman Matthew W. Nonnenmann Evaluation of face shields used during aerosol generating procedures Scientific Reports |
| title | Evaluation of face shields used during aerosol generating procedures |
| title_full | Evaluation of face shields used during aerosol generating procedures |
| title_fullStr | Evaluation of face shields used during aerosol generating procedures |
| title_full_unstemmed | Evaluation of face shields used during aerosol generating procedures |
| title_short | Evaluation of face shields used during aerosol generating procedures |
| title_sort | evaluation of face shields used during aerosol generating procedures |
| url | https://doi.org/10.1038/s41598-023-42403-8 |
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