Which of the following are true about a blood gas analyzer's ...

[audie]

Which of the following are true about a blood gas analyzer's waste fluids?
 
  1. A strong disinfectant should be added to waste fluid containers.
  2. Waste fluids should be handled as if they were blood samples.
  3. Waste fluids should be treated as potentially infectious.
  a. 1 and 2 only
  b. 1 and 3 only
  c. 2 and 3 only
  d. 1, 2, and 3

Question 2

To measure PCO2, blood gas analyzers use what electrode?
 
  a. Severinghaus
  b. Clark
  c. Sahn
  d. White

[jackie]

Answer to Question 1

ANS: D
Remember that waste fluids are potentially infectious and should be handled as if they were blood samples. In addition, the National Committee for Clinical Laboratory Standards recom-mends adding a strong disinfectant, such as 2 glutaraldehyde or a 1:4 solution of sodium hy-pochlorite, to the instrument's waste container either during use or before disposal.

Answer to Question 2

ANS: A
To measure PCO2, blood gas analyzers use the Severinghaus electrode, which is essentially a pH electrode exposed to an electrolyte solution that is in equilibrium with the sample through a car-bon dioxidepermeable membrane.