An Automated Blood Gas Analyzer Performs Two-Point Calibrations That Match

question 40

Multiple Choice

An automated blood gas analyzer performs two-point calibrations that match expected values.Subsequent quality control runs show unacceptable values for PO₂ and PCO₂,but pH is acceptable.Which of the following is the most likely problem?

• A) Contaminated buffers
• B) Contaminated calibration gas
• C) Analyzer temperature not at 37° C
• D) Computer error

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Definitions:

Mood Swings

Rapid and extreme changes in one's emotional state.

Self-Serving Bias

The tendency to attribute positive outcomes to one's own character but attribute negative outcomes to external factors.

Negotiating

The process of discussing and arriving at a mutual agreement between parties with different interests.

Positive Illusions

Optimistically biased beliefs about oneself that are not fully grounded in reality, believed to support psychological well-being.