us-abfm MCQ (SBA): COPD-Long-Term Oxygen

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EasyRespiratory MedicineCOPD-Long-Term Oxygenus-abfmus-abimus-usmle-step-2

A patient with severe COPD at rest has PaO₂ 53 mmHg on room air and secondary polycythaemia. What is the best next step regarding oxygen?

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us-abfm MCQ: COPD-Long-Term Oxygen — Answer & Explanation | iatroX