Quick Answer
Climbing above 10,000 feet requires acclimatization to prevent altitude sickness. This involves gradual ascent, staying hydrated, and monitoring symptoms. Climbers should aim to ascend 1,000 to 1,500 feet per day, resting at higher elevations.
Understanding Altitude Sickness
Altitude sickness, also known as acute mountain sickness (AMS), occurs when the body adapts too quickly to high elevations. The primary symptom is headaches, which can be severe. Other signs include nausea, fatigue, and shortness of breath. AMS can progress to life-threatening conditions, such as high-altitude pulmonary edema (HAPE) and high-altitude cerebral edema (HACE).
Acclimatization Techniques
A safe acclimatization strategy involves ascending to a high elevation, then descending to a lower elevation, where climbers rest for a day or two before ascending again. This is known as the “climb high, sleep low” approach. For example, if climbing to 14,000 feet, climbers might spend a night at 12,000 feet, then ascend to 14,000 feet the next day. This allows the body to adapt to the higher elevation without excessive stress. Climbers should also drink plenty of water, aiming for at least 3 liters per day, and avoid heavy meals.
Managing Altitude Sickness Symptoms
If symptoms of AMS occur, climbers should immediately descend to a lower elevation. Descent by 1,000 to 1,500 feet is usually sufficient to alleviate symptoms. In some cases, climbers may take Diamox (acetazolamide) to help alleviate symptoms, but this should only be done under medical supervision. Climbers should also be aware of the warning signs of HAPE and HACE, including severe shortness of breath, chest pain, and severe headaches, and seek medical attention immediately if these symptoms occur.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.