[Continuous measurement of cations in the blood-stream of patients (author's transl)].
An electrochemical flow-through system in the blood-stream of patients is described, which allows continuous measuring of Na+-, K+- and Ca++-concentrations. The ion-selective electrodes show excellent selectivity constants. Activity potentials of greater than 97% of the theoretical measurement characteristics of the electrodes (Nernst-factor) could be achieved. This electrochemical measuring device makes it possible to measure continuously the electrolyte activities in the blood. Results of direct patient measurements are demonstrated.
D002118:Calcium / Q000097:blood; D004573:Electrolytes / Q000097:blood* / Q000378:metabolism; D005260:Female; D006801:Humans; D008875:Middle Aged; D008991:Monitoring, Physiologic / Q000295:instrumentation; D011188:Potassium / Q000097:blood; D012964:Sodium / Q000097:blood
D004573:Electrolytes; D012964:Sodium; D011188:Potassium; D002118:Calcium
Kontinuierliche kationenselektive Direktmessung im strömenden Blut am Menschen.