Effective design of barrier enclosure to contain aerosol emissions from COVID-19 patients.
Indoor Air
; 31(5): 1639-1644, 2021 09.
Article
in English
| MEDLINE | ID: covidwho-1194130
Preprint
This scientific journal article is probably based on a previously available preprint. It has been identified through a machine matching algorithm, human confirmation is still pending.
See preprint
This scientific journal article is probably based on a previously available preprint. It has been identified through a machine matching algorithm, human confirmation is still pending.
See preprint
ABSTRACT
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%.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Infection Control
/
Air Pollution, Indoor
/
COVID-19
Type of study:
Experimental Studies
/
Observational study
Limits:
Humans
Language:
English
Journal:
Indoor Air
Journal subject:
Environmental Health
Year:
2021
Document Type:
Article
Affiliation country:
Ina.12828
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