us-abim MCQ (SBA): COPD-Pharmacotherapy

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ModerateRespiratory MedicineCOPD-Pharmacotherapyus-abimus-abfmus-usmle-step-2

A 68-year-old with chronic COPD (GOLD group E phenotype) has frequent exacerbations despite LAMA. Which escalation is supported by U.S. guidance?

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