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Daily versus as-needed corticosteroids for mild persistent asthma.

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Intermittent corticosteroid therapy may effectively manage mild persistent asthma, offering an alternative to daily controller medications. Further research is needed to confirm this approach for asthma symptom control.

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Area of Science:

  • Pulmonology
  • Clinical Pharmacology
  • Respiratory Medicine

Background:

  • Asthma guidelines recommend daily controller therapy for mild persistent asthma.
  • However, current prescription patterns indicate frequent intermittent use of these therapies.
  • This study investigates alternative treatment strategies for mild persistent asthma.

Purpose of the Study:

  • To evaluate the efficacy of intermittent short-course corticosteroid treatment guided by a symptom-based action plan.
  • To compare this intermittent approach with daily inhaled budesonide or oral zafirlukast over one year.
  • To assess various asthma control metrics and patient-reported outcomes.

Main Methods:

  • A double-blind, randomized trial involving 225 adult patients with mild persistent asthma.
  • Primary outcome: morning peak expiratory flow (PEF).
  • Secondary outcomes: forced expiratory volume in one second (FEV1), exacerbation frequency, asthma control scores, symptom-free days, and quality of life.

Main Results:

  • All three treatment groups showed similar improvements in morning PEF and asthma exacerbation rates.
  • Daily budesonide demonstrated superior improvements in pre-bronchodilator FEV1, bronchial reactivity, sputum eosinophils, and exhaled nitric oxide compared to intermittent therapy or daily zafirlukast.
  • Daily zafirlukast did not show significant differences from intermittent treatment across measured outcomes.

Conclusions:

  • Intermittent short courses of inhaled or oral corticosteroids, used during symptom exacerbations, may be a viable treatment option for mild persistent asthma.
  • This approach warrants further investigation to determine its clinical recommendation.
  • Daily budesonide showed better control of airway inflammation markers than intermittent therapy or zafirlukast.