Lung Function Tests
 

Bronchodilator Reversibility

 
 
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Overview

  • Bronchodilator reversibility is indicative of asthma, though some reversibility may be present in COPD.
    • How to Assess

    • Perform spirometry before and after administering a bronchodilator - usually salbutamol.
    • Interpretation

    • Significant reversibility is defined as a 12% or >200mL increase in FEV₁ or FVC after bronchodilator.
 
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