Acute mountain sickness can occur at heights above which altitude?

Acute mountain sickness can occur at heights above which altitude?

• A. 5,000 ft
• B. 7,500 ft
• C. 10,000 ft
• D. 12,000 ft

Answer: (B)

Acute mountain sickness arises when you climb high enough that the air carries significantly less oxygen, challenging the body's ability to adapt. The risk increases with altitude, and symptoms commonly begin after you’ve been at elevations around 2,500 meters (about 8,000 feet) for a period of time. Among practical field-training thresholds, AMS can begin to occur around seven thousand five hundred feet, which makes that level the best match given the options. Below that height (around 5,000 feet) AMS is unlikely, while higher elevations (10,000 or 12,000 feet) also pose risk but represent a higher threshold than the point where onset starts to occur. If you ascend and begin to notice headaches, nausea, dizziness, or fatigue, it’s a signal to monitor closely and consider descending if symptoms worsen.

Acute mountain sickness arises when you climb high enough that the air carries significantly less oxygen, challenging the body's ability to adapt. The risk increases with altitude, and symptoms commonly begin after you’ve been at elevations around 2,500 meters (about 8,000 feet) for a period of time. Among practical field-training thresholds, AMS can begin to occur around seven thousand five hundred feet, which makes that level the best match given the options. Below that height (around 5,000 feet) AMS is unlikely, while higher elevations (10,000 or 12,000 feet) also pose risk but represent a higher threshold than the point where onset starts to occur. If you ascend and begin to notice headaches, nausea, dizziness, or fatigue, it’s a signal to monitor closely and consider descending if symptoms worsen.