A 70-year-old ex-smoker with known COPD (FEV₁ 45% predicted) presents to the emergency department with increased dyspnoea, productive cough and purule...

Question

A 70-year-old ex-smoker with known COPD (FEV₁ 45% predicted) presents to the emergency department with increased dyspnoea, productive cough and purulent sputum. On arrival his SpO₂ is 86% on room air, respiratory rate 30 breaths/min and he is using accessory muscles. What is the most appropriate initial oxygen target?

Accepted Answer

Administer oxygen to maintain SpO₂ between 88-92%

Answer

Administer high-flow oxygen to maintain SpO₂ above 98%

Answer

Avoid oxygen therapy until arterial blood gases are available

Answer

Administer oxygen only if SpO₂ falls below 80%

Answer

Administer oxygen to maintain SpO₂ exactly at 100%

au-amc MCQ (SBA): COPD exacerbation oxygen therapy