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EasyRespiratoryCOPD exacerbation oxygen therapyau-amcau-acem

A 65-year-old man with chronic obstructive pulmonary disease presents to the emergency department with increased dyspnoea, purulent sputum and wheeze over 3 days. He is tachypnoeic with SpO₂ 88% on room air. What is the target oxygen saturation range recommended in COPD exacerbations?

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