4. Electrodes and Quality Assurance (E1)

True or false:  There is actual flow of electrical current in the pH electrode.

• True

• False

 The reference electrode in the PaO2 electrode is made of which of the following?

• Calomel

• Silver Chloride

The PO2 electrode that incorporates a semipermeable membrane to prevent contact of the blood with the electrode terminal is called the ...................

• Severinghaus Electrode

• Clark Electrode

• Sanz electrode

In the electrical system of the Clark electrode ,the silver is positively charged and serves as the................

• Cathode

• Anode

 In the PCO2 electrode, blood (Dose /Dose not) come in direct contact with the pH –sensitive glass.

• Dose

• Dose not

The clinical PCO2 electrode is also known as the.................

• Clarck Electrode

• Severinghaus Electrode

• Sanz electrode

The PCO2 electrodes actually measure changes in ...........

• Voltage

• Current