Which of the following is true concerning the typical point-of-care blood gas analyzer?
a. It is only able to measure pH, PaCO2, and PaO2.
b. It measures actual hemoglobin oxygen saturation.
c. It uses silicone chips with microelectrodes.
d. It requires 1 to 2 mL of blood.
ANS: C
Point-of-care blood gas analyzers use solid-state sensors, which rely on either fluorescence tech-nology or thin-film electrodes that have been fabricated onto silicone chips. The microelectrodes are incorporated into a single-use disposable cartridge that also contains calibration reagents, a sampling stylus, and a waste container.
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