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GPC Exam 4: Topics 8&9(100% Correct)

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  • GPC : Topics 8&9

Clinicians must be skilled in validating test results using rigorous ______ _______ methods that ensure that clinical decisions are used to determine patient care are based on accurate information. - ANSWERSQuality Control what do blood gas analyzers use electrodes to measure? - ANSWERSthe parti...

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  • November 3, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • GPC : Topics 8&9
  • GPC : Topics 8&9
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GPC Exam 4: Topics 8&9(100% Correct)

Clinicians must be skilled in validating test results using rigorous ______ _______ methods that ensure
that clinical decisions are used to determine patient care are based on accurate information. -
ANSWERSQuality Control



what do blood gas analyzers use electrodes to measure? - ANSWERSthe partial pressure of oxygen, the
partial pressure of CO2, acidity (pH) of the blood



Blood gas analyzers also calculate _______________ (HCO3), ________ __________, __________
_______, and other measurements. - ANSWERSbicarbonate, base excess, anion gap



Some incorporate an oximeter to measure _____ where some also measure electrolytes, _________,
and glucose. - ANSWERSSaO2, lactate



Define cathode - ANSWERSnegatively charged pole



Define Anode - ANSWERSpositively charged pole



Define Electromotive Force: - ANSWERSresponsible for pumping electrons form negative to positive pole



Define Voltage - ANSWERSunit of measurement for electromotive force



Define Current - ANSWERSactual flow of electrons through a conductor



Define Amp - ANSWERSunit of measurement for current



Define Working Half-Cell - ANSWERSelectrode terminal where actual analysis or work takes place

, Define Reference Half-Cell - ANSWERSelectrode terminal where a constant electrical voltage is produced



All electrodes are used in blood gas analysis measure a _______ in either _______ ________ or
_________ and equate them with chemical measurements. - ANSWERSchange, electrical current,
voltage



In the Clark Electrode, the flow of electrons _______ O2 and water to ______ _____ (OH-) at the
cathode - ANSWERSreduces, hydroxyl ions



In the Clark Electrode, the current generated will be in _______ proportion to the amount of dissolved
O2 (PO2) - ANSWERSdirect



_______ ________ - ____ is the most reliable and accurate measurement - ANSWERSSanz Electrode - pH



what is the function of the Sanz Electrode? - ANSWERSmeasures voltage rather than electrical current;
the unknown voltage is measured by comparison with a known voltage and then converted to pH



In the Sanz Electrode, the pH _______ glass allows _______ ions to ______ into it in proportion to the
______ ion concentration of the blood. - ANSWERShydrogen, diffuse, hydrogen



What is the function of the Severinghaus Electrode - CO2 - ANSWERSmeasures a voltage and therefore
can be converted to measure partial pressure of CO2 in blood

What is the function of the Clark Electrode - O2? - ANSWERSmeasures changes in electrical current to
measure the partial pressure of oxygen in blood



T/F the Clark Electrode typically consists of a platinum cathode and silver chloride anode - ANSWERSTrue



______ molecules diffuse through the sensor membranes into the electrolytes - ANSWERSO2



_______ ________ causes electron flow between the anode and cathode - ANSWERSPolarizing voltage

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