Effects of Manual Rib Cage Compressions on Mucus Clearance in Mechanically Ventilated Pigs.
airway clearance
mechanical ventilation
physiotherapy
rib cage compression
suctioning
Journal
Respiratory care
ISSN: 1943-3654
Titre abrégé: Respir Care
Pays: United States
ID NLM: 7510357
Informations de publication
Date de publication:
Aug 2020
Aug 2020
Historique:
pubmed:
13
2
2020
medline:
26
2
2021
entrez:
13
2
2020
Statut:
ppublish
Résumé
Manual rib cage compression is a chest physiotherapy technique routinely used in clinical practice. However, scientific evidence remains scarce on the effects of manual rib cage compression on airway clearance and oxygenation in mechanically ventilated patients. Anesthetized pigs were intubated via the trachea and mechanically ventilated. To create atelectasis, artificial mucus was infused into the airway. Each pig was randomly assigned to 1 of 2 groups: closed suctioning alone (control group, 7 pigs), or manual rib cage compression combined with closed suctioning (manual rib cage compression group, 8 pigs). Hard and brief rib cage compression synchronized with early expiratory phase was tested. Mucus clearance and oxygenation were assessed after the intervention. Sequential changes of hemodynamics were assessed after the intervention. During hard manual rib cage compression, the mean ± SD peak expiratory flow increased to 44 ± 7 L/min compared with 31 ± 7 L/min without treatment ( Our findings indicated that hard and brief manual rib cage compression combined with closed suctioning was safe and led to improvement of mucus clearance; however, no effectiveness was confirmed with regard to oxygenation and ventilation.
Sections du résumé
BACKGROUND
BACKGROUND
Manual rib cage compression is a chest physiotherapy technique routinely used in clinical practice. However, scientific evidence remains scarce on the effects of manual rib cage compression on airway clearance and oxygenation in mechanically ventilated patients.
METHODS
METHODS
Anesthetized pigs were intubated via the trachea and mechanically ventilated. To create atelectasis, artificial mucus was infused into the airway. Each pig was randomly assigned to 1 of 2 groups: closed suctioning alone (control group, 7 pigs), or manual rib cage compression combined with closed suctioning (manual rib cage compression group, 8 pigs). Hard and brief rib cage compression synchronized with early expiratory phase was tested. Mucus clearance and oxygenation were assessed after the intervention. Sequential changes of hemodynamics were assessed after the intervention.
RESULTS
RESULTS
During hard manual rib cage compression, the mean ± SD peak expiratory flow increased to 44 ± 7 L/min compared with 31 ± 7 L/min without treatment (
CONCLUSIONS
CONCLUSIONS
Our findings indicated that hard and brief manual rib cage compression combined with closed suctioning was safe and led to improvement of mucus clearance; however, no effectiveness was confirmed with regard to oxygenation and ventilation.
Identifiants
pubmed: 32047123
pii: respcare.07249
doi: 10.4187/respcare.07249
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1135-1140Informations de copyright
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