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

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