Respiratory muscle dysfunction in critically ill patients is associated with elevated morbidity, including prolonged weaning from mechanical ventilation. The causes for respiratory muscle dysfunction in these patients is poorly understood and no effective treatment is available. The general hypothesis of the present study is that in critically ill mechanically ventilated subjects respiratory muscle dysfunctions results from loss of myosin induced by activation of proteolytic cascades.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
30
Biopsy is obtained for biochemical analysis
Biopsy is obtained for biochemical analysis
Radboud Universtity Nijmegen Medical Centre
Nijmegen, Netherlands
Diaphragm muscle myosin content
Time frame: 1 day
Markers for inflammation
Inflammatory mediators are measured in plasma and diaphragm at the moment the diaphragm biopsy is obtained.
Time frame: 1 day
Markers for activation of proteolytic pathway in the diaphragm
Biochemical analysis is targeted towards activation of several proteolytic pathways (proteasome, lysosmal).
Time frame: 1 day
length of ICU stay
Length of ICU stay obtained from medical record
Time frame: 6 months
Length of mechanical ventilation
Duration of mechanical ventilation is assesssed within 6 months after obtaining diaphragm biopsy.
Time frame: 6 months
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