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Related Experiment Videos

Positive pressure techniques for airway clearance.

James B Fink1

  • 1Respiratory Science, Aerogen Incorporated, Mountain View, California 94043, USA. jfink@aerogen.com

Respiratory Care
|June 29, 2002
PubMed
Summary

Positive airway pressure (PAP) therapy aids secretion clearance in lung diseases like cystic fibrosis and chronic bronchitis, proving as effective as postural drainage. Different PAP devices may offer distinct physiological benefits requiring further study.

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Area of Science:

  • Respiratory Medicine
  • Pulmonary Physiology

Background:

  • Positive airway pressure (PAP) therapy has a long history of use for improving oxygenation and lung volumes.
  • Recent research highlights PAP's role in airway splinting, enhancing bronchodilator response, and aiding secretion clearance in specific respiratory conditions.

Purpose of the Study:

  • To explore the diverse devices, administration techniques, and clinical evidence for Positive Airway Pressure (PAP) therapy.
  • To compare the efficacy of PAP with traditional methods like postural drainage for secretion clearance.
  • To investigate the distinct physiological effects of PAP generated by different resistor types.

Main Methods:

  • Review of existing literature on Positive Airway Pressure (PAP) devices and administration techniques.
  • Comparative analysis of clinical evidence for PAP versus postural drainage in secretion clearance.
  • Examination of pressure and flow characteristics generated by threshold and fixed orifice resistors.

Main Results:

  • Positive airway pressure (PAP) therapy demonstrates efficacy in secretion clearance, comparable to postural drainage.
  • PAP therapy improves collateral ventilation and enhances the response to inhaled bronchodilators.
  • Different PAP resistor types (threshold vs. fixed orifice) produce unique pressure and flow patterns.

Conclusions:

  • Positive airway pressure (PAP) is a valuable tool for secretion clearance in patients with cystic fibrosis and chronic bronchitis.
  • The specific physiological effects of PAP may vary depending on the device's resistance mechanism.
  • Further clinical research is needed to fully elucidate the impact of different PAP delivery systems.

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