I see similar waveforms/velocities s/p endarterectomy.  It may vary by surgeon, but the endarterectomy site usually appears more bulbous than it was before surgery, thus the more turbulent flow and decreased velcities.  Just my two cents.

 Matt


-----Original Message-----
From: UVM Flownet [mailto:[log in to unmask]] On Behalf Of Norman Paley
Sent: Tuesday, June 29, 2010 21:49
To: [log in to unmask]
Subject: Intra operative carotid duplex velocities after endarterectomy

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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