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EasyRespiratoryCOPD airflow limitation stagingau-racpau-amc

A 68-year-old man presents with chronic cough productive of sputum and exertional dyspnoea. He has a 40-pack-year smoking history. Spirometry shows FEV1/FVC ratio 0.65 and FEV1 82% predicted. There is no significant reversibility after bronchodilator. According to COPD-X, how is the severity of his airflow limitation classified?

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