The surgeon in question does usually create a patch.  They generally seem to be of the relatively "tight" variety, however.  Nevertheless, it could still affect the velocity profile.

Thank you all for the interesting replies.



Norman Paley, BS, RVT
Technical Director Vascular Laboratory
Richmond University Medical Center
Staten Island, New York


Jun 29, 2010 09:50:14 PM, [log in to unmask] wrote:

===========================================

Within the past year we have begun doing intra operative duplex ultrasound  
evaluation of the carotid artery immediately after completion of carotid  
endarterectomy.  Our experience has been that, although, the lumen of the  
vessel looks fine after the procedure, the peak systolic velocities have  
tended to be relatively low.  My thought on this is that the artery, now  
stripped of its fascia and surrounding tissues, is able to dilate more  
easily with each pulse of blood going through it resulting in a lower peak  
velocity at a given volume compared with its unoperated state.  Does  
anybody have any experience with intra operative ultrasound during carotid  
endarterectomy and, if so, do you find similar, or any differences in the  
velocities?  Thank you in advance for any replies.



Norman Paley, BS, RVT
Technical Director Vascular Laboratory
Richmond University Medical Center
Staten Island, New York

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