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当习惯于平原地区生活的人们初到达一定高度(一般为3000公尺)以上的高原(或高山,以下同)时,机体往往出现一系列的反应,如心慌气短、血压升高、食欲不振、疲劳困倦、头昏头痛、失眠甚至恶心呕吐、昏迷等等。此乃由于高原地区空气稀薄、氧分压低、气候干燥、寒冷多变、光线照射增强等多种因素作用于机体而引起的,其中主要的原因在于缺氧。影响上述一系列反应的因素有:上升高度、上升速度和机体的情况(健康状
When people accustomed to living in the plains begin to reach plateaus (or mountains, the same below) of a certain altitude (or above 3000 m) in the first place, the body often has a series of reactions such as palpitation and shortness of breath, high blood pressure, loss of appetite, Fatigue, sleepiness, dizziness, headache, insomnia and even nausea, vomiting, coma and so on. This is due to the thin air in the plateau, low oxygen partial pressure, dry climate, cold and volatile, increased light exposure and other factors caused by the body, which is mainly due to hypoxia. The factors that influence the above mentioned series of reactions are ascending height, rising speed and the condition of the body (healthy