A Blood Gas Parameter Is Affected by the Choice of Arterial

question 27

Multiple Choice

A blood gas parameter is affected by the choice of arterial versus venous blood.What is the reason for the difference in the value of this correctly identified parameter?

• A) The pH of arterial blood is significantly higher because oxygen affects it,as noted in the Henderson-Hasselbalch equation.
• B) The hemoglobin in arterial blood is much richer in CO₂ because it has just returned from the lungs.
• C) PO₂ is generally lower in venous blood after O₂ is released in the capillaries and higher in arterial blood because this blood has passed through the lungs.
• D) Arterial blood contains much more

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