Above what altitude does high-altitude pulmonary edema (HAPE) most commonly occur?

High-altitude pulmonary edema (HAPE) typically occurs at elevations above 8,000 feet, but it is most commonly associated with altitudes around 14,500 feet and higher. At these elevations, the reduced atmospheric pressure leads to lower levels of oxygen, and this can cause fluid to accumulate in the lungs, resulting in HAPE.

The risk of developing HAPE increases significantly as one ascends past this threshold due to physiological changes that affect the body's ability to maintain adequate oxygenation. Individuals may experience symptoms such as shortness of breath, cough, and general fatigue because of the lack of oxygen and the effects of fluid retention in the lungs.

While HAPE can technically develop at lower altitudes, such as 5,000 to 6,000 feet, those altitudes should not be considered the most common occurrences for this condition. Understanding the altitude-related risks can help EMTs prepare to manage patients who might be suffering from HAPE when they encounter symptoms in high-altitude settings.