The barometric pressure is 760 mmHg, and you are calibrating a blood gas instrument with a mixture of 5% PCO₂ and 10% O₂. What are your expected calibration results?
I. 38.0 mmHg
II. 76.0 mmHg
III. 35.7 mmHg
IV. 71.3 mmHg

Question

Quizplus · Accepted Answer

To calculate the expected calibration results, we need to multiply the barometric pressure (760 mmHg) by the percentage of each gas in the mixture. For PCO₂: 0.05 x 760 mmHg = 38.0 mmHg For O₂: 0.10 x 760 mmHg = 76.0 mmHg Therefore, the expected calibration results are 38.0 mmHg and 76.0 mmHg. Only options III and IV include these values, so the answer is D.

The Barometric Pressure Is 760 MmHg, and You Are Calibrating