A 67-year-old man with a 40-pack-year smoking history presen…
A 67-year-old man with a 40-pack-year smoking history presents with progressive shortness of breath over the past year. He reports a chronic productive cough. His symptoms are worse with exertion. He denies chest pain. Which of the following HPI features is/are most characteristic of chronic obstructive pulmonary disease (COPD)?
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