How should you address a potential COPD patient with hypoxemia at altitude in an aeromedical evacuation?

• A. Provide supplemental oxygen to maintain SpO2 within 88–92%, monitor with available tools, and avoid excessive oxygen if not indicated.
• B. Do not provide oxygen to COPD patients at altitude to prevent CO2 retention.
• C. Increase oxygen to 100% to prevent hypoxemia at altitude.
• D. Use only portable pulse oximeter; no oxygen therapy.

Answer: (A)

When transporting a COPD patient who is hypoxemic at altitude, the goal is to correct low oxygen levels without tipping into CO2 retention. Altitude lowers the ambient oxygen, so hypoxemia is more likely, but COPD patients can retain CO2 if given too much oxygen. The best approach is to provide supplemental oxygen and titrate it to keep SpO2 in the 88–92% range. This targets adequate tissue oxygenation while minimizing hyperoxemia that could suppress the respiratory drive or worsen CO2 retention. Monitor closely with available tools, especially pulse oximetry, and adjust the oxygen flow as needed to stay within that range. Avoid using 100% oxygen, and do not withhold oxygen entirely or rely on oxygen-free monitoring alone; both extremes can be unsafe in this scenario.