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Rotational pauses: signs, symptoms, and causes
The narrow segment of the aorta anterior to where the left subclavian artery originates restricts blood flow and causes a drop in blood pressure distal to the stenosis. The pulse wave arrives slower than the left-hand side, and the amplitude of the left and right pulse is also different
Image of Aortic stenosis
Description
Is the difference between the time to catch the pulse when the pulse is rotated on both left and right sides at the same time.
Cause
Aortic stenosis.
Stenosis of the subclavian artery due to an aneurysm.
Mechanism
The narrow segment of the aorta anterior to where the left subclavian artery originates restricts blood flow and causes a drop in blood pressure distal to the stenosis.
The pulse wave arrives slower than the left-hand side, and the amplitude of the left and right pulse is also different.
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