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Author Question: Which blood gas analyzer electrode uses a separate reference electrode? a. O2 b. pH c. Clark ... (Read 64 times)

Cooldude101

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on: Jul 16, 2018
Which blood gas analyzer electrode uses a separate reference electrode?
 
  a. O2
  b. pH
  c. Clark
  d. HCO3

Question 2

What media are used to calibrate a blood gas analyzer's gas electrodes?
 
  a. Standard pH buffer solutions
  b. Bloodlike control media
  c. Precision mixtures of O2 and CO2
  d. Tonometered human blood samples


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FergA

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: B
The reference half-cell produces a constant potential, regardless of sample pH. The difference in potential between the two electrodes is proportional to the H+ concentration of the sample, which is displayed on a voltmeter calibrated in pH units.

Answer to Question 2

ANS: C
In most units, the media used to calibrate the gas electrodes are precision mixtures of oxygen and carbon dioxide.


Cooldude101

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Reply 2 on: Jul 16, 2018
Gracias!

FergA

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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