Commentary

[摘要] Arterial blood typically transports about 20 mL of oxygen per 100 mL (or approximately 9 mmol O2/L). Over 98% of the oxygen is bound to hemoglobin. A common misconception is to regard the P o2 as a direct (i.e., linear) indication of blood oxygenation. However, analysis of fresh cell-free plasma yields a perfectly respectable P o2 value, although the hemoglobin concentration of the sample is zero. The starting point for determining the oxygen content of the blood is oxygen saturation of hemoglobin, or S O2. Oxygen saturation …

[学科分类] 过敏症与临床免疫学