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ModerateRespiratory MedicineCOPD Oxygen Titrationus-abemus-abfmus-usmle-step-2

A 50-year-old with COPD exacerbation is on oxygen. ABG shows pH 7.31, PaCO₂ 58 mmHg, PaO₂ 62 mmHg on nasal cannula. What oxygen target is appropriate?

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