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Altitude sickness, the mildest form being acute mountain sickness (AMS), is a harmful effect of high altitude, caused by rapid exposure to low amounts of oxygen at high elevation. [ 1 ] [ 2 ] [ 3 ] People's bodies can respond to high altitude in different ways.
Chronic mountain sickness (CMS) is a disease in which the proportion of blood volume that is occupied by red blood cells increases (polycythaemia) and there is an abnormally low level of oxygen in the blood . CMS typically develops after extended time living at high altitude (over 2,500 metres (8,200 ft)).
High-altitude cerebral edema (HACE) is a medical condition in which the brain swells with fluid because of the physiological effects of traveling to a high altitude.It generally appears in patients who have acute mountain sickness and involves disorientation, lethargy, and nausea among other symptoms.
[1] [4] [5] Scientists at the High Altitude Pathology Institute in Bolivia dispute the existence of a death zone, based on observation of extreme tolerance to hypoxia in patients with chronic mountain sickness and normal fetuses in-utero, both of which present pO 2 levels similar to those at the summit of Mount Everest. [16]
They show a sustained increase in cerebral blood flow, lower hemoglobin concentration, and less susceptibility to chronic mountain sickness than other populations due to their longer history of high-altitude habitation. [33] [34] With the proper physical preparation, individuals can develop short-term tolerance to high-altitude conditions.
Mountain sickness can refer to: Altitude sickness or acute mountain sickness, a pathological condition that is caused by acute exposure to low air pressure Chronic mountain sickness , a disease that can develop during extended time living at altitude
In 1973, Hackett was a co-founder of the Himalayan Rescue Association. It established a clinic near Everest Base Camp (which is at 5,380 m (17,700 ft)), where the sick were cared for and information was gathered about mountain sickness. In 1981, as a member of the American Research Expedition, he helped set up a "well-equipped" lab at 5,180 m ...
Eldora Mountain Resort; Granby Ranch [3] (formerly SolVista Basin and Silver Creek) Hesperus Ski Area; Hoedown Hill [4] Howelsen Hill Ski Area; Kendall Mountain; Keystone Resort; Lake City Ski Hill [5] Lee's Ski Hill [6] Loveland Ski Area; Monarch Mountain; Powderhorn Resort; Purgatory Resort (formerly Durango Mountain Resort) Silverton ...