Cargando…

The application of a surgical face mask over different oxygen delivery devices; a crossover study of measured end-tidal oxygen concentrations

BACKGROUND: The application of a surgical face mask over oxygen delivery devices is now a widespread recommendation in the setting of the Coronavirus disease pandemic. This addition is designed to reduce droplet spread, but this also changes the nature of these devices, and may alter the amount of o...

Descripción completa

Detalles Bibliográficos
Autores principales: Brown-Beresford, Kate, Currie, John, Thiruvenkatarajan, Venkatesan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8899454/
https://www.ncbi.nlm.nih.gov/pubmed/35255824
http://dx.doi.org/10.1186/s12871-022-01602-y
_version_ 1784663917107085312
author Brown-Beresford, Kate
Currie, John
Thiruvenkatarajan, Venkatesan
author_facet Brown-Beresford, Kate
Currie, John
Thiruvenkatarajan, Venkatesan
author_sort Brown-Beresford, Kate
collection PubMed
description BACKGROUND: The application of a surgical face mask over oxygen delivery devices is now a widespread recommendation in the setting of the Coronavirus disease pandemic. This addition is designed to reduce droplet spread, but this also changes the nature of these devices, and may alter the amount of oxygen delivered to a patient. This research investigated how placing a surgical face mask over both a simple plastic mask (“Hudson mask”) and nasal cannula altered the concentration of available oxygen measured at the nares. METHODS: We measured the inspired and end-tidal oxygen concentrations of five healthy non-smoking volunteers. Oxygen was delivered via nasal cannula and also a simple plastic face mask, at flow rates of 2, 4, 6 and 8 l per minute, with and without an overlying surgical face mask. RESULTS: Adding a surgical mask over nasal cannula caused an appreciable rise in the end-tidal oxygen concentrations at all the measured oxygen flow rates 2, 4, 6, 8 L/minute. With the Hudson mask, there was a rise in oxygen concentration at 4 and 6 L/minute. For example, at a flow rate of 4 l/min via nasal cannula, available oxygen concentration increased from 24 to 36%, and via the Hudson mask the concentration rose from 27 to 38%. CONCLUSIONS: The addition of a surgical face mask over both nasal cannula and a Hudson mask resulted in an increased available oxygen concentration. This may be valuable where more advanced oxygen devices are not available, or alternatively providing adequate supplemental oxygen at lower flow rates and thus making critical savings in oxygen usage. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12871-022-01602-y.
format Online
Article
Text
id pubmed-8899454
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher BioMed Central
record_format MEDLINE/PubMed
spelling pubmed-88994542022-03-07 The application of a surgical face mask over different oxygen delivery devices; a crossover study of measured end-tidal oxygen concentrations Brown-Beresford, Kate Currie, John Thiruvenkatarajan, Venkatesan BMC Anesthesiol Research BACKGROUND: The application of a surgical face mask over oxygen delivery devices is now a widespread recommendation in the setting of the Coronavirus disease pandemic. This addition is designed to reduce droplet spread, but this also changes the nature of these devices, and may alter the amount of oxygen delivered to a patient. This research investigated how placing a surgical face mask over both a simple plastic mask (“Hudson mask”) and nasal cannula altered the concentration of available oxygen measured at the nares. METHODS: We measured the inspired and end-tidal oxygen concentrations of five healthy non-smoking volunteers. Oxygen was delivered via nasal cannula and also a simple plastic face mask, at flow rates of 2, 4, 6 and 8 l per minute, with and without an overlying surgical face mask. RESULTS: Adding a surgical mask over nasal cannula caused an appreciable rise in the end-tidal oxygen concentrations at all the measured oxygen flow rates 2, 4, 6, 8 L/minute. With the Hudson mask, there was a rise in oxygen concentration at 4 and 6 L/minute. For example, at a flow rate of 4 l/min via nasal cannula, available oxygen concentration increased from 24 to 36%, and via the Hudson mask the concentration rose from 27 to 38%. CONCLUSIONS: The addition of a surgical face mask over both nasal cannula and a Hudson mask resulted in an increased available oxygen concentration. This may be valuable where more advanced oxygen devices are not available, or alternatively providing adequate supplemental oxygen at lower flow rates and thus making critical savings in oxygen usage. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12871-022-01602-y. BioMed Central 2022-03-07 /pmc/articles/PMC8899454/ /pubmed/35255824 http://dx.doi.org/10.1186/s12871-022-01602-y Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research
Brown-Beresford, Kate
Currie, John
Thiruvenkatarajan, Venkatesan
The application of a surgical face mask over different oxygen delivery devices; a crossover study of measured end-tidal oxygen concentrations
title The application of a surgical face mask over different oxygen delivery devices; a crossover study of measured end-tidal oxygen concentrations
title_full The application of a surgical face mask over different oxygen delivery devices; a crossover study of measured end-tidal oxygen concentrations
title_fullStr The application of a surgical face mask over different oxygen delivery devices; a crossover study of measured end-tidal oxygen concentrations
title_full_unstemmed The application of a surgical face mask over different oxygen delivery devices; a crossover study of measured end-tidal oxygen concentrations
title_short The application of a surgical face mask over different oxygen delivery devices; a crossover study of measured end-tidal oxygen concentrations
title_sort application of a surgical face mask over different oxygen delivery devices; a crossover study of measured end-tidal oxygen concentrations
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8899454/
https://www.ncbi.nlm.nih.gov/pubmed/35255824
http://dx.doi.org/10.1186/s12871-022-01602-y
work_keys_str_mv AT brownberesfordkate theapplicationofasurgicalfacemaskoverdifferentoxygendeliverydevicesacrossoverstudyofmeasuredendtidaloxygenconcentrations
AT curriejohn theapplicationofasurgicalfacemaskoverdifferentoxygendeliverydevicesacrossoverstudyofmeasuredendtidaloxygenconcentrations
AT thiruvenkatarajanvenkatesan theapplicationofasurgicalfacemaskoverdifferentoxygendeliverydevicesacrossoverstudyofmeasuredendtidaloxygenconcentrations
AT brownberesfordkate applicationofasurgicalfacemaskoverdifferentoxygendeliverydevicesacrossoverstudyofmeasuredendtidaloxygenconcentrations
AT curriejohn applicationofasurgicalfacemaskoverdifferentoxygendeliverydevicesacrossoverstudyofmeasuredendtidaloxygenconcentrations
AT thiruvenkatarajanvenkatesan applicationofasurgicalfacemaskoverdifferentoxygendeliverydevicesacrossoverstudyofmeasuredendtidaloxygenconcentrations