Validation of a Shortened Electronic Version of the Environmental Symptoms Questionnaire
ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA THERMAL AND MOUNTAIN MEDICINE DIVISION
Pagination or Media Count:
Acute Mountain Sickness AMS is a syndrome that is characterized by headache, insomnia, anorexia, nausea, dizziness, and fatigue, but without abnormal neurological findings 11, 22. The severity and incidence of AMS is primarily related to the initial altitude, the rate of ascent, the altitude reached, and the duration of exposure to altitude 9, 13, 16, 21, 30. Additional factors that affect the severity and incidence of AMS are the degree of hyperemia 2, 5, 10, 18, level of physical exertion performed 8, 24, individual susceptibility 25, 31, and degree of prior altitude acclimatization 12, 15. Symptoms of AMS typically become evident in the first few hours of altitude exposure and reach peak severity in 24 to 48 h 22. The chief significance of AMS is that people rapidly exposed to altitude may be completely incapacitated in the first few days at altitude 22. Additionally, in a few individuals, AMS may progress to life-threatening high-altitude cerebral edema or high-altitude pulmonary edema, where evacuation is required.
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