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 7000 feet (2,100 m) who had 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 greater 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 t sleep is also frequently reported. In more severe cases thinking and judgment may be impaired. An uncommon but potentially fatal complication called high altitude pulmonary edema caused by fluid build-up in the lungs can also occur.

The symptoms of acute mountain sickness can be prevented or minimized by gradually ascending over several days to give your body a chance to acclimate to the higher altitude. The prescription medication Diamox (acetazolamide) (speak to your physician before traveling)  has been shown to speed up the acclimatization process and can be taken shortly before and during ascent. Do not take this medication if you are allergic to sulfa drugs. This medication is a mild diuretic and may work by changing the body’s acid-base balance and stimulating breathing. Once symptoms occur, they usually improve over several days without treatment. However, if they become severe, they can be relieved with the administration of oxygen or descent to lower altitude. Your hotel will have oxygen available for your use. Please do not hesitate to ask for the oxygen tank before leaving the hotel.  Also, you may enjoy coca tea.