What type of electrode is used by a transcutaneous partial pressure of oxygen (PtcO2) device?
a. Galvanic
b. Polarographic
c. Paramagnetic
d. Stow-Severinghaus
ANS: B
A heated Clark or polarographic electrode is used to monitor the transcutaneous partial pressure of oxygen. The Stow-Severinghaus electrode is used in the measurement of transcutaneous car-bon dioxide (CO2) partial pressure. Polarographic and Galvanic electrodes are types of oxygen analyzers that use chemical reactions to measure oxygen concentrations in gas mixtures.
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