us-abim MCQ (SBA): COPD

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MediumRespiratory MedicineCOPDus-abimus-abfmus-usmle-step-2us-usmle-step-3

An 82-year-old with GOLD-defined COPD, stable on LABA/LAMA, has resting SpO₂ 86% on room air confirmed twice. Next step?

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