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目的 探讨耳血氧计和指端血氧计测定血氧饱和度的差异。方法 观察11名男性健康青年受试者,吸氧浓度为18％及0.8％两种氧氮混合气,用两种测定方法测定血氧饱和度的变化。结果 吸入18％的氧氮混合气5min。两种测定方法的血氧饱和度无显著差异。突然改吸0.8％氧氮气体10s之后耳血氧饱和度迅速下降,25s时耳血氧饱和度下降到最低值;指血氧饱和度在15s时方开始下降,30s指血氧饱和度下降到最低值。结论 在急性缺氧试验中作为指示体内缺氧程度生理指标之一的血氧饱和度的测量,最好使用耳血氧计。在缺氧程度不太严重的试验中,两者均可使用。
Objective To investigate the difference of the oxygen saturation between the otolaryngology and finger oximeter. Methods Eleven male healthy volunteers were enrolled in this study. Two kinds of oxygen and nitrogen mixed gas with oxygen concentration of 18% and 0.8% were used. The changes of oxygen saturation were measured by two methods. Results inhalation of 18% oxygen and nitrogen mixture 5min. There was no significant difference in oxygen saturation between the two assays. Oxygen and nitrogen suddenly changed to 0.8% Oxygen and nitrogen 10s after the rapid decline in the oxygen saturation of the ears, ralph lauren polo, 25s, the auricular oxygen saturation decreased to the lowest value; refers to the oxygen saturation began to decline in the 15s, 30s refers to the oxygen saturation decreased to Lowest value. Conclusion In the acute hypoxia test as an indicator of hypoxia in vivo one of the physiological indicators of oxygen saturation measurement, it is best to use the otolaryngology. In the less severe hypoxia test, both can be used.