While analyzing a blood gas control sample, you notice a trending of several PCO2 values above the 2 SD range over the last six control samples run. What corrective action would you consider at this time?
1. Check the function of the PCO2 electrode.
2. Rerun the control sample a second time.
3. Repair or replace any failed components.
a. 1 and 2 only
b. 1 and 3 only
c. 2 and 3 only
d. 1, 2, and 3
ANS: B
Table 19-3 outlines the major factors causing these two types of error and suggests some common corrective actions.
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