Question

A 68-year-old with severe COPD and chronic hypercapnia asks about home oxygen therapy. Resting SpO2 95% on room air; drops to 86% on 6-minute walk. Which is true?

Accepted Answer

LTOT is indicated primarily for chronic severe resting hypoxemia

Answer

Long-term oxygen therapy improves survival in moderate desaturation

Answer

Prescribe LTOT for all COPD patients

Answer

Oxygen is harmful in exertional desaturation

Answer

Oxygen must be avoided if hypercapnia present

Practice question

A 68-year-old with severe COPD and chronic hypercapnia asks about home oxygen therapy. Resting SpO2 95% on room air; drops to 86% on 6-minute walk. Which is true?