Morgan J, Clague A, Rayfield J, Endre Z
Royal Brisbane Hospital, Queensland, Australia.
Acta Anaesthesiol Scand Suppl. 1995;107:57-9.
We have designed a quality control tool for haemoximetry using the principle that standard p50, calculated from blood gas and haemoximetry measurements using the Siggaard-Andersen algorithm, remains unchanged when a specimen of venous blood is oxygenated progressively to 97% saturation of haemoglobin. If the haemoximeter is inaccurate, progressively larger deviations of standard p50 from the constant value occur above 80% saturation. Deviations too small to be detected by analysis of quality control materials comprised of non-haemoglobin dyes and yet sufficient to cause significant errors in derived extractivity parameters can be detected by this method. The suggested protocol is easy to perform, and is recommended as a quality control tool for blood gas analyser/haemoximeters used to determine arterial extractivity parameters.
我们设计了一种用于血氧测定法的质量控制工具，其原理是：使用西格gaard - 安德森算法根据血气和血氧测定法测量值计算得出的标准p50，在静脉血样本逐渐氧合至血红蛋白饱和度97%时保持不变。如果血氧计不准确，在饱和度高于80%时，标准p50与恒定值的偏差会逐渐增大。这种方法可以检测到由非血红蛋白染料组成的质量控制材料分析无法检测到但足以在导出的提取率参数中导致显著误差的微小偏差。建议的方案易于执行，推荐作为用于确定动脉提取率参数的血气分析仪/血氧计的质量控制工具。
