A 54-year-old man presents with chronic productive cough and exertional dyspnoea. He has a 40 pack-year smoking history. Spirometry shows FEV1/FVC rat...

Question

A 54-year-old man presents with chronic productive cough and exertional dyspnoea. He has a 40 pack-year smoking history. Spirometry shows FEV1/FVC ratio 0.60 post-bronchodilator and FEV1 75% predicted. According to Canadian COPD guidelines, what is the key requirement to confirm the diagnosis of COPD?

Accepted Answer

Post-bronchodilator FEV1/FVC ratio less than 0.70

Answer

Presence of chronic sputum production

Answer

Chest radiograph showing hyperinflation

Answer

Reduced DLCO on pulmonary function testing

Answer

Response to a trial of inhaled bronchodilator

ca-mccqe1 MCQ (SBA): COPD diagnosis