Intercostal muscle oxygenation during expiratory load breathing at rest.
Airway obstruction
Expiratory resistance
Healthy subjects
NIRS
Respiratory muscle oxygenation
Journal
Respiratory physiology & neurobiology
ISSN: 1878-1519
Titre abrégé: Respir Physiol Neurobiol
Pays: Netherlands
ID NLM: 101140022
Informations de publication
Date de publication:
03 2019
03 2019
Historique:
received:
04
09
2018
revised:
26
11
2018
accepted:
21
12
2018
pubmed:
26
12
2018
medline:
5
4
2019
entrez:
25
12
2018
Statut:
ppublish
Résumé
During acute bronchial obstruction, despite a higher work of breathing, blood supply and oxygen availability may be reduced in intercostal muscles because of mechanical constraints. This hypothesis was assessed in healthy subjects breathing with and without expiratory load (ETL). Eleven men (24 ± 2 years) breathed at rest for 5 min in unloaded condition and for 20 min through a 20-cmH [tHb] and [O Despite decreases in Hb concentrations, saturation in oxygen was not reduced with ETL in intercostal muscles, suggesting a satisfactory ventilatory and/or hemodynamic arrangement.
Sections du résumé
BACKGROUND
During acute bronchial obstruction, despite a higher work of breathing, blood supply and oxygen availability may be reduced in intercostal muscles because of mechanical constraints. This hypothesis was assessed in healthy subjects breathing with and without expiratory load (ETL).
METHODS
Eleven men (24 ± 2 years) breathed at rest for 5 min in unloaded condition and for 20 min through a 20-cmH
RESULTS
[tHb] and [O
CONCLUSION
Despite decreases in Hb concentrations, saturation in oxygen was not reduced with ETL in intercostal muscles, suggesting a satisfactory ventilatory and/or hemodynamic arrangement.
Identifiants
pubmed: 30583068
pii: S1569-9048(18)30280-5
doi: 10.1016/j.resp.2018.12.007
pii:
doi:
Substances chimiques
Hemoglobins
0
Oxygen
S88TT14065
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
24-30Informations de copyright
Copyright © 2018 Elsevier B.V. All rights reserved.