Question

A 75-year-old with hypoxemia at rest (SpO₂ 86% on room air) asks about home oxygen for COPD. Which criterion supports long-term oxygen therapy?

Accepted Answer

PaO₂ 54 mmHg or SpO₂ ≤88% at rest

Answer

PaO₂ 62 mmHg

Answer

SpO₂ 90% on exertion only

Answer

Nocturnal desaturation to 89% alone

Answer

SpO₂ 92% at rest with cor pulmonale

Practice question

A 75-year-old with hypoxemia at rest (SpO₂ 86% on room air) asks about home oxygen for COPD. Which criterion supports long-term oxygen therapy?