What type of electrode is used by a transcutaneous partial pressure of carbon dioxide (PtcCO2) device?
a. Galvanic
b. Polarographic
c. Paramagnetic
d. Stow-Severinghaus
ANS: D
The Stow-Severinghaus electrode is used in the measurement of transcutaneous carbon dioxide partial pressure. A Clark or polarographic electrode is used to monitor the transcutaneous partial pressure of oxygen. Polarographic and Galvanic electrodes are types of oxygen analyzers that use chemical reactions to measure oxygen concentrations in gas mixtures.
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