The plateau reaction is acute altitude sickness, is a person to reach a certain altitude, the body to adapt to the altitude caused by the difference in air pressure, less oxygen, air dryness and other changes, and the natural physiological reaction, the altitude generally reach about 2700 meters, there will be plateau reaction.
The symptoms of plateau reaction are generally manifested as: headache, shortness of breath, chest tightness, anorexia, slight fever, dizziness, fatigue and so on. Some people due to low oxygen content and appear: lips and fingertips purple, drowsiness, mental hyperactivity, sleeplessness and other different manifestations. Some people appear due to dry air: rough skin, dry and cracked lips, bleeding nostrils or accumulation of blood clots.
Alpine acclimatization problems are mainly due to the high altitude air pressure drop, oxygen partial pressure decrease caused by alveolar oxygen partial pressure decrease, low blood oxygen. Decrease in partial pressure of oxygen causes a subsequent decrease in partial pressure of oxygen in alveolar gas and a decrease in the amount of oxygen delivered to the blood. Thus immediately causing several reactions in the body. The respiratory rate increases to draw more air into the lungs; the heart rate and cardiac output increase to increase arterial blood flow through the lungs and the body; and the body progressively increases the production of red blood cells and hemoglobin to improve the blood's ability to deliver oxygen. Even with these adjustments, the newly reached highlander is not able to fulfill his normal physiological performance.
Preventive measures
1. Prohibit smoking and alcohol, prevent colds and flu, avoid overwork, can be appropriate a few days in advance to take some Xiyangshen, Rhodiola rosea and other anti-hypoxia health products.
2. Don't listen to rumors that you need to do physical exercise before entering Tibet. Don't believe in the reasoning that taking the Qinghai-Tibet route and slowly entering Tibet will reduce the plateau reaction, the important thing is to pay attention to rest before departure and don't be too tired.
3. When you first arrive in Tibet, you must do three light. Speak light, walk light, do things light, at the same time, to try to drink more water, eat more vegetables and fruits, sleep well.
4. Slight plateau reaction will generally be cured, so it is recommended to easily do not inhale oxygen, otherwise it is easy to cause dependence on oxygen.
5. For some friends who want to enter the higher altitude adventure, the first time to the plateau. In the absence of adaptation and preparation, do not suddenly enter the area above 5000 meters above sea level. Can not walk, run, do physical labor in a hurry. Only after a week, can gradually increase a certain amount of activity.