A Physical Analog to Assess Surgical Face Mask Air Flow Resistance During Tidal Ventilation.
COVID-19
SARS-CoV-2
airway resistance
breathability
face masks
pressure-flow relationship
surgical masks
tidal breathing
Journal
Frontiers in physiology
ISSN: 1664-042X
Titre abrégé: Front Physiol
Pays: Switzerland
ID NLM: 101549006
Informations de publication
Date de publication:
2022
2022
Historique:
received:
03
11
2021
accepted:
24
01
2022
entrez:
7
3
2022
pubmed:
8
3
2022
medline:
8
3
2022
Statut:
epublish
Résumé
A large variety of disposable face masks have been produced since the onset of the COVID-19 pandemic. Decreased resistance to inspiration improves adherence to the use of the mask; the so called breathability is usually estimated by the measurement of air flow across a section of the tissue under a given pressure difference. We hypothesized that the mask pressure-flow relationship studied in conditions that mimic tidal breathing could allow a more comprehensive characterization of airflow resistance, a major determinant of mask comfort. A physical analog was made of a plaster cast dummy head connected through a pneumotachograph to a series of bellows inflated/deflated by a respirator. Pressure was measured at the mock airway opening over which the mask was carefully secured. The precision of the measurement equipment was quantified using two estimates of measurement error: repeatability coefficient (RC) and within-mask coefficient of variation (CV
Identifiants
pubmed: 35250615
doi: 10.3389/fphys.2022.808588
pmc: PMC8891640
doi:
Types de publication
Journal Article
Langues
eng
Pagination
808588Informations de copyright
Copyright © 2022 Demoulin, Duvivier, Marchal and Demoulin-Alexikova.
Déclaration de conflit d'intérêts
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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