If an in-flight asthma exacerbation persists after initial measures, what is the recommended action?

• A. Descent to a lower altitude
• B. Continue at current altitude
• C. Administer supplemental oxygen and prepare for descent if symptoms persist
• D. Evacuate by air medical transport

Answer: (A)

When an in-flight asthma exacerbation doesn’t respond to initial treatment, improving oxygen delivery quickly is the priority. Descending to a lower altitude increases the ambient oxygen partial pressure you’re exposed to, which helps raise the patient’s blood oxygen saturation and reduces hypoxemia. This rapid improvement in oxygenation can make ongoing bronchodilator therapy more effective and buys time to continue treatment while arranging for closer medical evaluation or landing at the nearest suitable airport for definitive care if needed. Staying at the same altitude leaves the cabin’s lower oxygen environment unchanged and can allow symptoms to deteriorate, while air medical evacuation is reserved for cases where stabilization isn’t achievable in flight.