A 70-year-old woman with severe COPD is clinically stable. Arterial blood gas on room air shows PaO2 54 mm Hg, repeated after optimisation of

Question

A 70-year-old woman with severe COPD is clinically stable. Arterial blood gas on room air shows PaO2 54 mm Hg, repeated after optimisation of inhalers. She does not smoke. Which of the following would you recommend at the follow-up visit?

Accepted Answer

Prescribe long-term oxygen therapy

Answer

Stop inhaled bronchodilators

Answer

Start chronic morphine as first-line therapy

Answer

Perform pulmonary angiography

Answer

Prescribe oxygen for exertion alone and no nocturnal use

Long-term oxygen therapy — USMLE Step 3 MCQ

A 70-year-old woman with severe COPD is clinically stable. Arterial blood gas on room air shows PaO2 54 mm Hg, repeated after optimisation of inhalers. She does not smoke. Which of the following would you recommend at the follow-up visit?