Is high altitude a factor in mortality rates for hikers?

Altitude and Mortality Risk

Hikers who ascend to high altitudes are at increased risk of mortality due to acute mountain sickness (AMS). The risk is higher in individuals over 65 years old and those with pre-existing medical conditions such as heart disease, diabetes, and respiratory disorders. At elevations above 8,000 feet (2,438 meters), the risk of AMS increases significantly. Studies have shown that the mortality rate for hikers with AMS is around 2-5% at elevations below 9,000 feet (2,743 meters), but increases to 10-20% at elevations above 12,000 feet (3,658 meters).

Factors Contributing to Mortality

Comorbidities such as hypertension, obesity, and chronic obstructive pulmonary disease (COPD) can exacerbate the risk of mortality at high altitudes. Additionally, dehydration, fatigue, and exposure to extreme temperatures can further increase the risk of mortality. It is essential for hikers to assess their risk level and take necessary precautions to mitigate these risks.

Prevention and Precautions

Hikers can take several steps to reduce their risk of mortality at high altitudes. These include acclimatizing gradually, staying hydrated, and monitoring for symptoms of AMS. Additionally, hikers should carry a personal locator beacon (PLB) or satellite phone, and inform someone of their itinerary and expected return time. By taking these precautions, hikers can minimize their risk of mortality and enjoy a safe and successful high-altitude adventure.