Which of the following indicates venous admixture during arterial puncture?
I.need to use syringe suction
II.dark-colored blood
III.small sample volumes

Question

Quizplus · Accepted Answer

The need to use syringe suction indicates difficulty in obtaining the arterial blood, which could be due to venous admixture. Small sample volumes indicate a low arterial blood flow, which could also be due to venous admixture. However, dark-colored blood alone does not necessarily indicate venous admixture as it could also be a result of high carbon dioxide levels or the presence of other substances in the blood. Therefore, only options I and III are not adequate indicators of venous admixture on their own.

Which of the Following Indicates Venous Admixture During Arterial Puncture