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Lung Function Tests
 
 
Lung Function Tests
Pulmonary function tests including spirometry, flow-volume loops, lung volumes and diffusion capacity can be used to diagnose and grade obstructive or restrictive lung disease.
 

Bronchodilator Reversibility

 
 

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.
Last updated on November 15th, 2017
 
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