What is the end result of venous admixture?

Question

Quizplus · Accepted Answer

Venous admixture refers to the mixing of oxygenated blood from the lungs with deoxygenated blood from the systemic veins, which ultimately results in a decrease in the partial pressure of oxygen in arterial blood (reduced PaO₂) and a decrease in the oxygen content of arterial blood (reduced CaO₂) returning to the left side of the heart. This is because the mixing of oxygenated and deoxygenated blood will result in a lower overall oxygen content in the mixed blood. Therefore, option A is the correct answer. Option B is incorrect because venous admixture will not result in an increase in PaO₂ or CaO₂.

What Is the End Result of Venous Admixture