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
Author(s)
Bissett, Bernie
Anne Leditschke, I.
Neeman, Teresa
Boots, Robert
Paratz, Jenny
Griffith University Author(s)
Year published
2014
Metadata
Show full item recordAbstract
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 ...
View more >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.
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View more >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.
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Journal Title
Heart & Lung
Volume
44
Issue
1
Subject
Cardiovascular medicine and haematology
Cardiovascular medicine and haematology not elsewhere classified
Nursing
Nursing not elsewhere classified