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Related Experiment Videos

As-needed medication use in asthma usage patterns and patient characteristics

H Mawhinney1, S L Spector, D Heitjan

  • 1Department of Medicine, UCLA School of Medicine.

The Journal of Asthma : Official Journal of the Association for the Care of Asthma
|January 1, 1993
PubMed
Summary

Asthma patients often misuse as-needed bronchodilator inhalers. Objective airway obstruction measures, not just symptoms, may improve medication adherence for better asthma control.

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Area of Science:

  • Pulmonary Medicine
  • Behavioral Psychology
  • Medical Device Technology

Background:

  • As-needed (prn) bronchodilator use is common in asthma management.
  • Accurate adherence to prn medication is crucial for effective asthma control.
  • Patient-reported symptoms may not always align with objective measures of airway obstruction.

Purpose of the Study:

  • To investigate patterns of as-needed bronchodilator inhaler usage in asthma patients.
  • To identify clinical and psychological factors associated with medication usage patterns.
  • To explore the relationship between objective airway obstruction and medication adherence.

Main Methods:

  • Inhaled bronchodilator usage tracked via electronic devices.
  • Daily airway obstruction assessed using peak flow measurements.

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  • Subjects categorized into usage groups based on obstruction severity and inhaler activations.
  • Psychological variables, including general anxiety (MMPI Pt) and specific internal awareness, were assessed.

    • Main Results:

    • Only 10 of 39 subjects demonstrated appropriate prn inhaler use.
    • Arbitrary medication users exhibited higher general anxiety scores compared to nonarbitrary users.
    • Arbitrary users reported lower specific internal awareness of asthma attack premonitory symptoms.

    Conclusions:

    • Current as-needed bronchodilator use patterns suggest frequent inappropriate adherence.
    • Psychological factors like anxiety and awareness of symptoms influence medication use.
    • Utilizing objective airway obstruction data may improve adherence to prn asthma medication compared to subjective symptom reporting.