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D

Doug Marcum
RDMS,RDCS,RVT(APS)
*Advanced Ultrasound Consultants
*Global Vein Solutions
www.advancedusconsultants.com
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On Feb 16, 2010, at 10:10 PM, kai Wee Leong <<a href="/cgi-bin/wa?LOGON=A3%3Dind1002%26L%3DUVMFLOWNET%26E%3D7bit%26P%3D1180132%26B%3D--Apple-Mail-5-338428904%26T%3Dtext%252Fplain%3B%2520charset%3Dus-ascii" target="_parent" >[log in to unmask]</a>> wrote:

> Hi,
>
> We have a bit of 'disagreement' in regards to AVF stenosis criteria  
> in my centre.
> I have been taught to use ratio >3:1 to indicate a significant  
> stenosis (ie >50% stenosis). I got the impression that I don't use  
> the PSV to determine the degree of stenosis. However, 1 of  
> colleagues mentioned that a functioning AVF should have a PSV of  
> 300-400cm/sec. And anything >400cm/sec is a stenosis.
>
> What do you guys think? And what are the AVF stenosis criteria do  
> your clinics use?
>
> THanks for your input.
>
>
>
>
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