Forced expirations against a variable resistance: A new chest physiotherapy method in cystic fibrosis

@article{Oberwaldner1986ForcedEA,
  title={Forced expirations against a variable resistance: A new chest physiotherapy method in cystic fibrosis},
  author={B{\'e}atrice Oberwaldner and J. C. Evans and Maximilian S. Zach},
  journal={Pediatric Pulmonology},
  year={1986},
  volume={2}
}
Twenty patients with cystic fibrosis (CF) were trained to mobilize intrabronchial secretions by a new method of positive expiratory pressure mask (PEP mask) physiotherapy (PT). Patients repeatedly expired forcefully through the PEP mask; expiratory resistance was varied by eight different internal diameter resistors at the outlet. Forced vital capacity with the mask (FVCPEP) was determined for each resistor and was compared with the one measured without the instrument (FVC); simultaneously the… 
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The rationale for the use of positive expiratory pressure (PEP) techniques as a means of chest physiotherapy in respiratory patients is discussed and both the effectiveness and problems of the most popular PEP devices in clinical practice are compared.
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Effect of positive expiratory pressure breathing in patients with cystic fibrosis.
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In patients with cystic fibrosis positive expiratory pressure breathing increases lung volumes in relation to the expiratories pressure imposed; these changes in lung volume did not, however, lead to an improvement of mucus transport.
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