In a patient with a bruit on the right side, which of the following is NOT a potential source of the bruit?

A bruit is an abnormal sound heard during auscultation, often indicative of turbulence in blood flow due to vascular abnormalities. In the case of a bruit on the right side, several sources can produce this sound, each linked to various forms of stenosis or other vascular conditions.

The potential sources of the bruit include stenosis of the external carotid artery, stenosis of the subclavian artery, and dissection of the common carotid artery, as these conditions can all cause increased blood flow turbulence leading to a detectable bruit.

Occlusion of the common carotid artery, however, typically results in a lack of sufficient blood flow, thus diminishing or eliminating sound rather than creating it. An occluded artery generally does not produce a bruit because there is a significant reduction in flow, meaning the conditions that create turbulence are absent. As a result, occlusion would not be a source of the bruit heard on the right side in this scenario.

Understanding these concepts helps in interpreting vascular sounds during examinations and understanding their underlying causes.