us-abim MCQ (SBA): COPD (LTOT)

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HardRespiratory MedicineCOPD (LTOT)us-abimus-usmle-step-2us-usmle-step-3

A 65-year-old with long-standing COPD (on LABA/LAMA) has chronic hypoxemia with resting SpO₂ 86% on room air. Next step?

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