10th September 2020

A 16-year-old boy presents to his GP with exercise-induced dyspnoea

A 16-year-old boy presents to his GP with exercise-induced dyspnoea and an intermittent non-productive cough. He has been suffering with these symptoms for 3 weeks. The GP decides to investigate his lung function through spirometry. Testing reveals an FEV₁ of 4L and a forced vital capacity (FVC) of 5L. The difference between the two largest values for FVC and FEV₁ are 0.06L and 0.05L respectively.

What is the pattern of respiratory disease shown on spirometry?

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