Breathing muscle activity during expiration in patients with chronic airflow obstruction.

  title={Breathing muscle activity during expiration in patients with chronic airflow obstruction.},
  author={Michael J. Morris and Richard G Madgwick and Anthony J. Frew and Donald J Lane},
  journal={The European respiratory journal},
  volume={3 8},
During quiet ventilation in 10 patients with severe chronic airflow obstruction (AFO) there were large tidal swings of pleural pressure, 15.8 +/- 5.1 cmH2O, with high negative pressures achieved, 15.2 +/- 5.2 cmH2O. The pattern of pleural pressure mirrored that of tidal expiratory flow with a rapid rise to maximum of pleural pressure and flow at the beginning of expiration, a slow decline of both throughout most of expiration, and just before the onset of inspiration at flow reversal, a sharp… CONTINUE READING


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