What is the initial management for acute mountain sickness in an aircrew member?

What is the initial management for acute mountain sickness in an aircrew member?

• A. Descent to a lower altitude and supplemental oxygen; seek medical evaluation.
• B. Rapid ascent to acclimate
• C. Administration of high-dose diuretics
• D. Immediate hyperbaric recompression

Answer: (D)

Acute mountain sickness happens because the body isn’t getting enough oxygen at high altitude. The fastest, most effective way to reverse this is to improve oxygen delivery by descending to a lower altitude and providing supplemental oxygen. In an aircrew member, that means initiating a controlled descent and ensuring 100% oxygen is available and used until symptoms improve, with medical evaluation arranged to monitor for progression to more serious altitude illness. Hydration and rest help some, but they don’t address the root problem like descent and oxygen do. Choices that raise altitude, push diuretics, or rely on immediate hyperbaric recompression don’t tackle the hypoxia at the heart of AMS, so they aren’t appropriate as the initial management. Hyperbaric recompression is used for decompression-related conditions, not AMS.

Acute mountain sickness happens because the body isn’t getting enough oxygen at high altitude. The fastest, most effective way to reverse this is to improve oxygen delivery by descending to a lower altitude and providing supplemental oxygen. In an aircrew member, that means initiating a controlled descent and ensuring 100% oxygen is available and used until symptoms improve, with medical evaluation arranged to monitor for progression to more serious altitude illness. Hydration and rest help some, but they don’t address the root problem like descent and oxygen do.

Choices that raise altitude, push diuretics, or rely on immediate hyperbaric recompression don’t tackle the hypoxia at the heart of AMS, so they aren’t appropriate as the initial management. Hyperbaric recompression is used for decompression-related conditions, not AMS.