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Related Experiment Videos

The flutter device and expiratory pressures.

Dina Brooks1, Ellen Newbold, Louise F Kozar

  • 1Department of Physical Therapy, The University of Toronto, 256 McCaul Street, Toronto, Ontario M5T 1W5, Canada. dina.brooks@utoronto.ca

Journal of Cardiopulmonary Rehabilitation
|February 13, 2002
PubMed
Summary

Flutter therapy, using oscillating positive expiratory pressure, showed that increased airflow and positive device incline significantly raise expiratory pressure and oscillation frequency. This aids clinical understanding of the Flutter device.

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Area of Science:

  • Respiratory Physiology
  • Medical Device Engineering

Background:

  • Flutter therapy utilizes a handheld device to deliver oscillating positive expiratory pressure (OPEP).
  • Understanding the impact of airflow and device orientation is crucial for optimizing OPEP delivery.

Purpose of the Study:

  • To investigate the effects of airflow and device incline on expiratory pressure and oscillation frequency.
  • To quantify the relationship between these parameters in Flutter therapy.

Main Methods:

  • A Flutter device was connected to a pneumotachograph and ventilator to control airflow.
  • Expiratory pressure and oscillation frequency were measured across inclines from +40 to -40 degrees.

Main Results:

  • Strong correlations were found between airflow and expiratory pressure (r > 0.93).

Related Experiment Videos

  • Significant correlations existed between expiratory pressure and oscillation frequency (r = 0.81-0.97).
  • A notable decrease in expiratory pressure occurred at a -40 degree incline.

    • Conclusions:

    • Positive incline and higher airflow increase expiratory pressure during Flutter therapy.
    • Findings provide valuable insights for clinicians using the Flutter device.