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ModerateRespiratory MedicineCOPD with Hypercapnic Respiratory Failureus-abemus-abimus-usmle-step-2

A 64-year-old with COPD exacerbation has ABG: pH 7.29, PaCO₂ 60 mmHg, PaO₂ 58 mmHg on 2 L O₂. Best next step?

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