In the plateau must know!

Travel to the spirit of the plateau some tourists happy, but others appeared irritability, or even illness, can not enjoy the fun of the plateau tourism activities. Medical Practice has proved that altitude sickness often occurs at an altitude of 3,000 meters above the plateau region, therefore the medical significance of this altitude. According to the information that the United States Utah, Colorado, Wyoming and New Mexico mountains, the main road up to 3650 meters above sea level, some cities and towns located in more than 3,000 meters above sea level. In 1984 there are 34 million people at an altitude of 2285 meters and above the plateau tourism, of which 20% of the people on board an altitude of 2590 meters or more scenic. However, in these tourists in, but about 25% of the people there has been some symptoms of altitude sickness. In addition to Qinghai-Tibet Plateau in China, some mountains are over 3,000 meters above sea level, such as the Buddhist mountain Emei Shan Wan Foding elevations peak 3099 meters, 3077 meters above sea level citrinopileatus; Wutai Mountain Peak leaf hopper 3058 meters above sea level.

Tourists arrived in the plateau, the human exposure at the plateau, when there is a process of adaptation, medicine known as acclimatization. Acclimatization is through the full diffusion of oxygen into the body cells, so that the body is suitable oxygen environment, and carried out a complex, rapid and slow process, mainly in breathing, heartbeat and blood circulation in response.

Increased breathing fast, medically known as hyperventilation, is the first and most importantly, hypoxia adaptation, by the carotid arteries caused by stimulation of oxygen reduction reaction. People know that the pressure of the atmosphere change with altitude, that is, the smaller the elevation of the higher atmospheric pressure, atmospheric pressure the greater the closer from the ground. Very high in general for every 100 meters, pressure will drop 067 kPa (5 mm Hg), such as Lhasa, 3658 meters above sea level, atmospheric pressure of 65.2 kPa (489 mm Hg), only sea-level atmospheric pressure (101.3 kPa) and 64.4 % of which are also only sea level partial pressure of oxygen partial pressure of oxygen 64.2%, the plateau region is hypoxia. Tourists entering the plateau, when manifested as increased breathing faster, with an average per-minute faster than the plain areas 2 to 3 times to make up for lack of inhalation of itching. Otherwise, it is often awakened at night to reduce sleep quality. Therefore, some experts have suggested that sleep can enhance the plateau through the physiological adaptability.

Significantly increased heart rate is faster due to the increase in blood catecholamines, to the circulatory system of early hypoxic response, the initial pulse increase of 10 per minute to 20 times, most returned to normal after 1 week. Wake up the morning resting pulse self-examination can be used as a valuable state of acclimatization seen as a barometer. Generally plateau 2 to 7 days after acclimatization to normal.