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40% at 3,000 metres (10,000 ft) [1][2] 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 can respond to high altitude in different ways. Symptoms may include headaches, vomiting, tiredness, confusion ...
Climbing Mount Rainier.. The effects of high altitude on humans are mostly the consequences of reduced partial pressure of oxygen in the atmosphere. The medical problems that are direct consequence of high altitude are caused by the low inspired partial pressure of oxygen, which is caused by the reduced atmospheric pressure, and the constant gas fraction of oxygen in atmospheric air over the ...
Emergency medicine, wilderness medicine. High-altitude pulmonary edema (HAPE) is a life-threatening form of non-cardiogenic pulmonary edema that occurs in otherwise healthy people at altitudes typically above 2,500 meters (8,200 ft). [2] However, cases have also been reported between 1,500–2,500 metres or 4,900–8,200 feet in more vulnerable ...
Altitude sickness occurs as the body adjusts to the lack of oxygen at high elevations. There are ways to prevent, lessen the symptoms.
They considered the possibility that these abilities resulted from an evolutionary genetic adaptation to high-altitude conditions. [31] The Tibetan plateau has an average elevation of 4,000 meters (13,000 ft) above sea level and covers more than 2.5 million km 2; it is the highest and largest plateau in the world. In 1990, it was estimated that ...
High-altitude cerebral oedema [1] (HACO) 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.
Specialty. Emergency medicine. 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 (hypoxemia). CMS typically develops after extended time living at high altitude (over 2,500 metres (8,200 ft)).
With three volcanic cones — Kibo, Mawenzi and Shira — it is the highest mountain in Africa and the highest single free-standing mountain above sea level in the world: 5,895 m (19,341 ft) above sea level and 4,900 m (16,100 ft) above its plateau base. It is also the highest volcano in the Eastern Hemisphere.