Norma, sounds like Klippel-Trenaunay Syndrome. The book states the a-v
fistulas are microscopic type communicators, may be hard to see. Hope this
helps. Carol Vandenberg, RN, RVT
Norma VandenBerghe wrote:
> I have a question about using duplex US to identify and localize
> congenital arterio-venous malformations. I have had a few cases through
> the years, and have not really had much luck with tracking the little
> devils down. I have been able to predict a couple of intracranial cases
> based on the differences between the flow signals in the two carotid
> arteries. But in the extremities, as on the child I saw today with
> hugely distended veins and even small venous ulcerations on his left
> leg, they have remained elusive. I looked at the entire arterial system
> for low resistance or turbulence; I looked at the entire venous system
> for arterialized flow, pulsation, etc. And found nothing. No
> difference compared to the same site on the unaffected right leg. I
> looked at iliacs and all the way down the leg. I tried to just look for
> abnormal color flow. I looked with velocity scale set high. Set low.
> Gain up, down etc. Nothing.
> Have others had more success than I have? I feel like I must be
> overlooking something.
> Thanks! Norma V.