us-abim MCQ (SBA): COPD Add-On Therapy

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HardRespiratory MedicineCOPD Add-On Therapyus-abimus-usmle-step-3

A 68-year-old man with COPD exacerbations and chronic bronchitis (FEV₁ 38%) continues to exacerbate despite triple therapy. Next add-on?

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us-abim MCQ: COPD Add-On Therapy — Answer & Explanation | iatroX