What SpO2 target range is recommended for a COPD patient to prevent CO2 narcosis?

What SpO2 target range is recommended for a COPD patient to prevent CO2 narcosis?

• A. 88-92%
• B. 92-96%
• C. 94-98%
• D. 80-85%

Answer: (B)

In COPD patients who may retain CO2, the oxygen target is chosen to avoid both hypoxemia and the risk that too much oxygen will blunt the drive to breathe and worsen hypercapnia. Keeping SpO2 in a moderate range helps ensure tissues get enough oxygen without oversaturating, which can contribute to CO2 narcosis. The recommended target of 92-96% provides sufficient oxygenation while minimizing the chance that high oxygen levels will suppress ventilation in a chronic CO2-retaining patient. Lower targets (like 80-85%) risk dangerous hypoxemia, while higher targets (94-98%) can push toward hyperoxia and potential CO2 retention.

In COPD patients who may retain CO2, the oxygen target is chosen to avoid both hypoxemia and the risk that too much oxygen will blunt the drive to breathe and worsen hypercapnia. Keeping SpO2 in a moderate range helps ensure tissues get enough oxygen without oversaturating, which can contribute to CO2 narcosis. The recommended target of 92-96% provides sufficient oxygenation while minimizing the chance that high oxygen levels will suppress ventilation in a chronic CO2-retaining patient. Lower targets (like 80-85%) risk dangerous hypoxemia, while higher targets (94-98%) can push toward hyperoxia and potential CO2 retention.