Posted: 投稿者： Wocca (748) 投稿日時： 火, 2005-11-08 10:44 | 件名: Altitude Sickness

Preventing Acute Mountain Sickness

Acute mountain sickness is caused by a lack of oxygen when traveling to higher elevations. This usually occurs in individuals exposed to an altitude over 7,000 feet (2,100 m) who have not had a chance to acclimate to the altitude before engaging in physical activities. Mountain climbers, trekkers, skiers, and travelers to the Andes or Himalayas are at greatest risk.

While individual tolerance varies, symptoms usually appear in several hours, with those in poor physical condition being most susceptible. Headache, fatigue, shortness of breath, nausea, and poor appetite occur initially. Inability to sleep is also frequently reported. In more severe cases thinking and judgement may become impaired. An uncommon but potentially fatal complication called high altitude pulmonary edema, caused by fluid build-up in the lungs, can also occur.

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