What SpO2 target should be maintained in COPD patients receiving oxygen in EMS?

• A. 88–92%
• B. 96–100%
• C. 92–98%
• D. 84–88%

Answer: (A)

In COPD patients who need supplemental oxygen, the goal is to keep oxygen levels sufficient without over-oxygenating, because many COPD patients have chronic CO2 retention. Providing too much oxygen can blunt their respiratory drive and worsen hypercapnia, and it can also worsen ventilation–perfusion mismatch in diseased lungs. The safest target in EMS for these patients is an SpO2 of about 88–92%. This range protects tissue oxygenation while minimizing the risk of CO2 retention.

Choices that push saturations higher, like 96–100% or 92–98%, increase the chance of hyperoxia and CO2 buildup in COPD. A target of 84–88% risks inadequate oxygen delivery and tissue hypoxia. Thus, 88–92% is the most appropriate balance for COPD patients receiving oxygen in the field.