CONTINUOUS RECORDING OF BLOOD pH AND ITS RADIOTELEMETRY

Implantable pH glass electrode for continuous recording of blood pH in situ is described. The electrode was applied for telemetering of pH of circulating blood in running dogs.Results obtained are as follows:1. This pH glass electrode gave 58 mV per one pH change which almost satisfy Nernst's theoretical value.2. The stability of the electrode was high (within 0.017 pH units over several hours) and the reproducibility was very good (±1.0 mV of standard deviation).3. Response time of the electrode was fast enough to detect rapid change of blood pH.4. Radiotelemetry of blood pH was attempted with this pH glass electrode by FM-AM system. The telemetry gave fairly stable and reasonable results.