ds for testing for HAPE is to check recovery time after exertion. Recovery time refers to the time after exertion that it takes for heart rate and respiration to return to near normal. An increase in this time may mean fluid is building up in the lungs. If a case of HAPE is suspected an immediate descent is a necessary life-saving measure (2,000 - 4,000 feet). Anyone suffering from HAPE must be evacuated to a medical facility for proper follow-up treatment. Early data suggests that nifedipine may have a protective effect against high altitude pulmonary edema (University of Iowa, 1995). HIGH ALTITUDE CEREBRAL EDEMA (HACE) High altitude cerebral edema results from the swelling of brain tissue from fluid leakage. Symptoms can include headache, loss of coordination (ataxia), weakness, and decreasing levels of consciousness including, disorientation, loss of memory, hallucinations, psychotic behavior, and coma. It generally occurs after a week or more at high altitude. Severe instances can lead to death if not treated quickly. Immediate descent is a necessary life-saving measure (2,000 - 4,000 feet). Anyone suffering from HACE must be evacuated to a medical facility for proper follow-up treatment. CONCLUSION The importance of oxygen to the functioning of the human body is critical. Thus the effect of decreased partial pressure of oxygen at higher altitudes can be pronounced. Each individual adapts at a different speed to exposure to altitude and it is hard to know who may be affected by altitude sickness. There are no specific factors such as age, sex, or physical condition that correlate with susceptibility to altitude sickness. Most people can go up to 8,000 feet with minimal effect. Acclimatization is often accompanied by fluid loss, so the ingestion of large amounts of fluid to remain properly hydrated is important (at least 3-4 quarts per day). Urine output should be copious and clear. From the available studies ...
