Final answer:
The appropriate treatment for the 54-year-old man with COPD experiencing an exacerbation would be oral corticosteroid.
Step-by-step explanation:
An appropriate treatment for the 54-year-old man with COPD experiencing an exacerbation would be oral corticosteroid. In cases of exacerbation, corticosteroids are commonly used to reduce inflammation and improve lung function.
They are effective in treating the symptoms of exacerbation, such as increased cough and shortness of breath. The long-acting beta2-agonist and long-acting muscarinic antagonist that he is currently taking help with long-term control of COPD, but corticosteroids are needed for immediate relief during an exacerbation.