Normal values for common carotid artery peak systolic velocity and ICA/CCA ratio are?

Prepare for the WCUI/Smith Chason Exit Assessment – Abdomen, Vascular, OB/GYN Test. Enhance your study with flashcards and detailed multiple choice questions, complete with hints and explanations. Master your exit exam with confidence!

Multiple Choice

Normal values for common carotid artery peak systolic velocity and ICA/CCA ratio are?

Explanation:
In carotid duplex assessment, you look at how fast blood is moving in the common carotid and how that speed in the internal carotid compares to the common carotid. Normal flow is typically a common carotid peak systolic velocity under about 125 cm/s, and the ICA/CCA velocity ratio is around 2.0 or less. So the best pair is the one that matches these normal limits: a CCA PSV under 125 cm/s with an ICA/CCA ratio of about 2.0. Values outside these ranges suggest increased flow due to stenosis, where the ICA velocity rises and the ratio increases. The other options either propose higher normal velocities or higher ratios that would indicate abnormal flow, or present ranges that align with stenosis rather than normal.

In carotid duplex assessment, you look at how fast blood is moving in the common carotid and how that speed in the internal carotid compares to the common carotid. Normal flow is typically a common carotid peak systolic velocity under about 125 cm/s, and the ICA/CCA velocity ratio is around 2.0 or less. So the best pair is the one that matches these normal limits: a CCA PSV under 125 cm/s with an ICA/CCA ratio of about 2.0. Values outside these ranges suggest increased flow due to stenosis, where the ICA velocity rises and the ratio increases. The other options either propose higher normal velocities or higher ratios that would indicate abnormal flow, or present ranges that align with stenosis rather than normal.

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