Stiller S, Mann H
Dept. Internal Medicine III, Technical University of Aachen, GFR.
Life Support Syst. 1985;3 Suppl 1:63-7.
In order to decide whether the ionometer can be accepted as an alternative to the flame photometer in the measurement of sodium and potassium, extensive measurements with ionometry in parallel with flame photometry were performed in serum and dialysis fluid during dialysis. The influence of parameters which influence both ionometry and flame photometry in a different way (protein concentration, pH, acetate, and bicarbonate concentration) was investigated. The correlation between the two methods for potassium in serum and dialysis fluid was excellent (r greater than 0.95), but unsatisfactory for sodium in serum (r = 0.77) and in dialysis fluid (r less than 0.85). This low correlation is attributed in a greater extent to the random errors caused by flame photometry than by ionometry. Ionometry can be accepted as an alternative to flame photometry in dialysis therapy.
为了确定离子计能否作为火焰光度计在钠和钾测量中的替代方法，在透析过程中，对血清和透析液同时进行了离子计测量与火焰光度测量的广泛对比。研究了以不同方式影响离子计和火焰光度测量的参数（蛋白质浓度、pH值、乙酸盐和碳酸氢盐浓度）的影响。血清和透析液中两种测量钾的方法之间的相关性极佳（r大于0.95），但血清中钠的测量相关性不理想（r = 0.77），透析液中钠的测量相关性也不理想（r小于0.85）。这种低相关性在很大程度上归因于火焰光度测量产生的随机误差，而非离子计测量。在透析治疗中，离子计可被视为火焰光度测量的替代方法。
