Dastych M, Cundrle I
Oddĕlení klinické biochemie FNSP Brno-Bohunice.
Vnitr Lek. 1994 Sep;40(9):609-13.
The authors discuss parameters characterizing the oxygen metabolism and their clinical impact: Partial oxygen pressure in arterial and mixed venous blood, lactate and new parameters derived from direct assessment of haemoglobin saturation with oxygen in arterial blood. Oxygen extraction tension (px): partial oxygen pressure in mixed venous blood at which 2.3 mmol oxygen are released from one litre of blood. Extractable oxygen (cx): the amount of oxygen released from on litre of blood when the partial oxygen pressure drops to 5.0 kPa. Oxygen compensation factor (Qx): it is the factor that cardiac output should increase to maintain a normal mixed venous p O2 of 5.0 kPa. Effective haemoglobin: haemoglobin participating in oxygen transmission which determines the oxygen capacity of blood for oxygen. Half the haemoglobin saturation (p50): characterizing the haemoglobin affinity for oxygen and corresponding to the shape and position of the haemoglobin saturation curve. Pulmonary shunts. Advantages, pitfalls and limitations of the mentioned parameters are given.
动脉血和混合静脉血中的氧分压、乳酸以及通过直接评估动脉血氧合血红蛋白饱和度得出的新参数。氧摄取张力（px）：混合静脉血中的氧分压，此时每升血液释放2.3毫摩尔氧。可提取氧（cx）：当氧分压降至5.0千帕时，每升血液释放的氧量。氧补偿因子（Qx）：为维持正常混合静脉血氧分压5.0千帕，心输出量应增加的因子。有效血红蛋白：参与氧传输的血红蛋白，它决定了血液的氧容量。血红蛋白半饱和度（p50）：表征血红蛋白对氧的亲和力，对应于血红蛋白饱和度曲线的形状和位置。肺分流。文中给出了上述参数的优点、缺陷和局限性。
