Effective design of barrier enclosure to contain aerosol emissions from COVID-19 patients.
COVID-19
aerosol
airborne transmissions
barrier enclosure
infection control
Journal
Indoor air
ISSN: 1600-0668
Titre abrégé: Indoor Air
Pays: England
ID NLM: 9423515
Informations de publication
Date de publication:
09 2021
09 2021
Historique:
revised:
14
03
2021
received:
10
12
2020
accepted:
16
03
2021
pubmed:
21
4
2021
medline:
16
9
2021
entrez:
20
4
2021
Statut:
ppublish
Résumé
Facing shortages of personal protective equipment, some clinicians have advocated the use of barrier enclosures (typically mounted over the head, with and without suction) to contain aerosol emissions from coronavirus disease 2019 (COVID-19) patients. There is, however, little evidence for its usefulness. To test the effectiveness of such a device, we built a manikin that can expire micron-sized aerosols at flow rates close to physiological conditions. We then placed the manikin inside the enclosure and used a laser sheet to visualize the aerosol leaking out. We show that with sufficient suction, it is possible to effectively contain aerosol from the manikin, reducing aerosol exposure outside the enclosure by 99%. In contrast, a passive barrier without suction only reduces aerosol exposure by 60%.
Identifiants
pubmed: 33876847
doi: 10.1111/ina.12828
pmc: PMC8250690
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1639-1644Subventions
Organisme : A*STAR
ID : SC25/20-8R1640
Organisme : National Medical Research council, Singapore
ID : MOH-000411
Informations de copyright
© 2021 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.
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