Dissociated Oxygen Saturations
by Dr Paul Young, last update March 16, 2019
aka Hematology Hoodwinker 004
One of the emergency residents has just taken an ABG on the 44 year-old woman in cubicle 3. Prior to her current presentation she had no known medical problems. The patient’s pulse oximetry reading is SpO2 98% on air.
急诊科的一名住院医师刚刚为一名44岁的女性患者做了动脉血气检查。此次发病前，患者没有既往病史。患者吸空气时脉搏氧饱和度(SpO2)为98%。
This is the arterial blood gas:
患者动脉血气结果如下：
Questions 问题
Q1. What are the possible explanations for the discrepancy between the pulse oximetry reading and the oxygen saturation on the arterial blood gas?
Q1. 脉搏氧饱和度与动脉血气氧饱和度结果不一致的可能原因有哪些？
Q2. What other blood test would be particularly helpful?
Q2. 其他哪些血液检查结果会有帮助？
