Takezaki T, Nakao M, Niinai H, Nakatani K, Kawaguchi R, Hanaki C, Nakao M
Department of Anesthesia, Hiroshima Prefectural Hospital.
Masui. 1994 Apr;43(4):589-93.
A handy blood glucose analyzer (Toecho Super), using disposable enzyme electrodes, is widely used not only for the self-control of diabetes but also for critical care settings such as the ICU or the operating room. Recently we reported that the measured glucose value was lower compared with the true reference data, when oxygen tension was high. We investigated the interaction between the blood glucose levels and oxygen tension in vitro using 5 levels of glucose and 5 levels of oxygen tension. Measured glucose value decreased linearly as oxygen tension rose with a high correlation factor (0.816-0.996). The measured glucose level (mg.dl-1) could be estimated by the reference data minus one tenth of oxygen tension (in mmHg). Therefore we conclude that the measured glucose value is dependent only on oxygen tension but not on the range of glucose level. The reference glucose value can be estimated when oxygen tension is available.
