Weaned but weary: One third of adult intensive care patients mechanically ventilated for 7 days or more have impaired inspiratory muscle endurance after successful weaning

Bissett, Bernie, Leditschke, I. Anne, Neeman, Teresa, Boots, Robert and Paratz, Jennifer (2015) Weaned but weary: One third of adult intensive care patients mechanically ventilated for 7 days or more have impaired inspiratory muscle endurance after successful weaning. Heart and Lung: Journal of Acute and Critical Care, 44 1: 15-20. doi:10.1016/j.hrtlng.2014.10.001


Author Bissett, Bernie
Leditschke, I. Anne
Neeman, Teresa
Boots, Robert
Paratz, Jennifer
Title Weaned but weary: One third of adult intensive care patients mechanically ventilated for 7 days or more have impaired inspiratory muscle endurance after successful weaning
Journal name Heart and Lung: Journal of Acute and Critical Care   Check publisher's open access policy
ISSN 1527-3288
0147-9563
Publication date 2015-01-01
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.hrtlng.2014.10.001
Open Access Status
Volume 44
Issue 1
Start page 15
End page 20
Total pages 6
Place of publication Philadelphia, PA, United States
Publisher Mosby
Collection year 2015
Language eng
Formatted abstract
Objectives: The purpose of this study was to establish whether intensive care unit (ICU) patients have impaired inspiratory muscle (IM) endurance immediately following weaning from prolonged mechanical ventilation (MV), and whether IM weakness is related to function or perceived exertion.

Background: Impaired IM endurance may hinder recovery from MV, however it is unknown whether this affects patients' function or perceived exertion.

Methods: Prospective observational study of 43 adult ICU patients following weaning from MV (>7 days duration). IM endurance was measured using the fatigue resistance index (FRI).

Results: IM endurance was impaired (FRI=mean 0.90, SD 0.31), with 37% scoring below 0.80. IM strength did not significantly correlate with function (. r=0.24, p=0.12) or perceived exertion during exercise (. r=-0.146, p=0.37).

Conclusions: IM endurance is reduced in one third of patients, while IM weakness does not appear closely associated with function or perceived exertion immediately following successful weaning.
Keyword Critical care
Fatigue
Inspiratory muscle
Mechanical ventilation
Ventilator weaning
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Medicine Publications
 
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