Subclavian steal is proximal to the origin of the vertebral artery. Relative to the origin, its location is:

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Prepare for the Vascular Techniques Exam 3. Study with in-depth questions, hints, and explanations to fully understand vascular techniques. Bolster your knowledge and ensure success on your exam!

Multiple Choice

Subclavian steal is proximal to the origin of the vertebral artery. Relative to the origin, its location is:

Explanation:
The vertebral artery sprouts from the subclavian artery, so anything described as proximal to its origin sits on the subclavian artery closer to the heart than the point where the vertebral artery branches off. If a lesion or structure is described as proximal to that origin, its location is on the subclavian artery before the vertebral artery arises—which is why the correct term is proximal. Distal would be after the origin, at or beyond the vertebral branch; at the origin would be exactly at the branching point; lateral describes a side-to-side direction, which isn’t what this question is asking.

The vertebral artery sprouts from the subclavian artery, so anything described as proximal to its origin sits on the subclavian artery closer to the heart than the point where the vertebral artery branches off. If a lesion or structure is described as proximal to that origin, its location is on the subclavian artery before the vertebral artery arises—which is why the correct term is proximal. Distal would be after the origin, at or beyond the vertebral branch; at the origin would be exactly at the branching point; lateral describes a side-to-side direction, which isn’t what this question is asking.

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