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HardRespiratory MedicineCOPD (Chronic Bronchitis)us-abimus-usmle-step-3

A 59-year-old with chronic bronchitis phenotype COPD (FEV₁ 42%) has ≥2 exacerbations/year despite LABA/LAMA and eosinophils 80/µL. Best adjunct?

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