Performance of Different Low-Flow Oxygen Delivery Systems.
double-trunk mask
low-flow oxygen therapy
non-rebreather mask
oxygen face mask
performance
respiratory distress
Journal
Respiratory care
ISSN: 1943-3654
Titre abrégé: Respir Care
Pays: United States
ID NLM: 7510357
Informations de publication
Date de publication:
03 2022
03 2022
Historique:
pubmed:
22
10
2021
medline:
29
3
2022
entrez:
21
10
2021
Statut:
ppublish
Résumé
The delivery of a high and consistent [Formula: see text] is imperative to treat acute hypoxemia. The objective of this study was to analyze the effective inspired oxygen concentration delivered by different low-flow oxygen therapy systems challenged with different oxygen flows and respiratory patterns in an experimental lung model. An adult lung model ventilated in volume control mode simulated different respiratory patterns to obtain mean inspiratory flow of 22.5, 30.0, 37.5, or 45.0 L/min. The oxygen concentration sampled inside the lung model by nasal cannula, simple face mask, non-rebreather mask, and double-trunk mask above nasal cannula tested at oxygen flows of 10, 12.5, and 15 L/min was quantified. The 3 masks were sealed tight onto the model's airway opening. They were also tested with standardized leaks to determine their clinical performance. All oxygen delivery systems delivered higher oxygen concentration with increasing oxygen flows, regardless of the respiratory pattern. Within each device, the increase in inspiratory flow decreased oxygen concentration when using nasal cannula ( Lung oxygen concentration values delivered by the double-trunk mask were higher than those obtained with other oxygen delivery systems, especially when leaks were present.
Sections du résumé
BACKGROUND
The delivery of a high and consistent [Formula: see text] is imperative to treat acute hypoxemia. The objective of this study was to analyze the effective inspired oxygen concentration delivered by different low-flow oxygen therapy systems challenged with different oxygen flows and respiratory patterns in an experimental lung model.
METHODS
An adult lung model ventilated in volume control mode simulated different respiratory patterns to obtain mean inspiratory flow of 22.5, 30.0, 37.5, or 45.0 L/min. The oxygen concentration sampled inside the lung model by nasal cannula, simple face mask, non-rebreather mask, and double-trunk mask above nasal cannula tested at oxygen flows of 10, 12.5, and 15 L/min was quantified. The 3 masks were sealed tight onto the model's airway opening. They were also tested with standardized leaks to determine their clinical performance.
RESULTS
All oxygen delivery systems delivered higher oxygen concentration with increasing oxygen flows, regardless of the respiratory pattern. Within each device, the increase in inspiratory flow decreased oxygen concentration when using nasal cannula (
CONCLUSIONS
Lung oxygen concentration values delivered by the double-trunk mask were higher than those obtained with other oxygen delivery systems, especially when leaks were present.
Identifiants
pubmed: 34670855
pii: respcare.09312
doi: 10.4187/respcare.09312
doi:
Substances chimiques
Oxygen
S88TT14065
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
322-330Informations de copyright
Copyright © 2022 by Daedalus Enterprises.
Déclaration de conflit d'intérêts
The authors have disclosed no conflicts of interest.