Diaphragm strength in chronic obstructive pulmonary disease.

  title={Diaphragm strength in chronic obstructive pulmonary disease.},
  author={M. I. Polkey and Dimitris Kyroussis and C. H. Hamneg{\aa}rd and G. H. Mills and Malcolm Green and John Moxham},
  journal={American journal of respiratory and critical care medicine},
  volume={154 5},
The diaphragm is normally the main inspiratory muscle and diaphragm strength in chronic obstructive pulmonary disease (COPD) is therefore of interest. We assessed diaphragm strength in 20 patients with severe stable COPD (mean FEV1 0.61, mean thoracic gas volume [Vtg] 5.31) and seven normal control subjects, measuring both maximal sniff transdiaphragmatic pressure (sniff Pdi(max)) and twitch transdiaphragmatic pressure (Tw Pdi) elicited by cervical magnetic stimulation (CMS) of the phrenic… CONTINUE READING


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