Pulse polarography and intravascular oxygen electrodes.
The membranes covering standard polarographic in vivo PO2 electrodes were modified with a view to altering their response times. Their performance was examined under constant and pulsed polarization. Pulse polarization diminished the under-reading of the PO2 signal which occurred at low flow rates. The stability of the electrode signal was greatly improved by integrating the electrode current over the pulse period. The combination of thin membranes and pulsed polarography will provide a PO2 electrode with a fast time response without under-reading the true in vivo PO2.
D004566:Electrodes; D010100:Oxygen / Q000097:blood*; D010313:Partial Pressure; D011048:Polarography / Q000295:instrumentation*; D013997:Time Factors
D010100:Oxygen