A Patient Has the Following Arterial Blood-Gas Values While Breathing $\dot Q$

question 4

Multiple Choice

A patient has the following arterial blood-gas values while breathing room air: PaO₂ = 100 mm Hg; SaO₂ = 0.975.The hemoglobin concentration is 7 g/dL, and the $\dot Q$ is 8 L/min.Will the resting oxygen consumption be affected?

• A) Yes, because hemoglobin is below normal levels.
• B) No, because the PaO₂ is normal.
• C) No, because the DO₂ is well above the normal resting oxygen consumption.
• D) Yes, because the cardiac output is excessively high.

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