飞行高度与血氧饱和度变化的相关性分析

Correlations between altitude and changes of blood oxygen saturation

目的通过动态观察不同飞行高度环境下血氧饱和度(SpO_2)的变化特征,为高空环境下医学救援提供科学依据。方法以空军总医院参加军事演习任务的39名医务人员为研究对象,利用运-9运输机分别于地面、起飞时、4 500、6 000、7 500 m不同运输高度对受试者的SpO_2进行监测,并对监测数据进行t检验。结果受试者SpO_2在高空环境下较地面时降低,差异有统计学意义(P<0.05)。随着飞行高度的增加,SpO_2均持续下降,差异有统计学意义(P<0.05)。在起飞时,受试者SpO_2为95.74±1.39,差异无统计学意义(P>0.05)。结论飞机在起飞时对人体SpO_2无显著影响。受试者SpO_2在高空环境下较地面时降低,随着飞行高度的增加,SpO_2呈下降趋势。

Objective To observe the patterns of change of saturation of blood oxygen （SpOz） at different altitude and provide reference for medical rescue in a high-altitude environment. Methods Thirty-nine healthcare providers from Air Force General Hospital who took part in military exercises were recruited in this study. SpO2 of these subjects was detected aboard a Y-9 transport aircraft at different altitude： at the ground level, 4 500, 6 000 and 7 500m above sea level. Results SpO2 decreased in a high-altitude environment compared with the statistically significant （P〈0.05）. Along with the increase of altitude, SpO2 continued gr to ound level, and the difference was decline and the difference was also of statistical significance （P〈0.05）. During takeoff, SpO2 of the subjects was 95.74±1.39 （P〉0.05） and the difference was not statistically significant. Conclusion Aircraft has no significant effect on SpO2 of a human body during takeoff. SpO2 tends to decrease with the increase of altitude.