高原病(HAD)是指由平原进入海拔3000 m以上高原,或由低海拔地区进入高海拔地区时,由于对低氧环境的适应能力不全或失调而发生的综合征,又称高山病。据报道,当海拔升至2800 m时,大气压将降为543 mmHg(1 mmHg=0·133 kPa),大气氧分压将降为110 mmHg,肺泡氧分压(PAO2)将降为65 mmH Altiplano (HAD) refers to the syndrome that occurs when the plains enter the plateau at an altitude of 3000 m or above or enters the high altitude area from low altitude due to incomplete or abnormal accommodation of hypoxia environment, also known as mountain sickness. It is reported that when the altitude rises to 2800 m, the atmospheric pressure will be reduced to 543 mmHg (1 mmHg = 0.133 kPa), the partial pressure of oxygen in the atmosphere will be reduced to 110 mmHg, the alveolar oxygen pressure (PAO2) will be reduced to 65 mmH