In the arena of venous reflux it appears that we lack a consensus on a few
things. Aside from reflux time, what about standing vs. reverse
trendelenburg for patient positioning? I have worked in labs which have used
one or the other or some combination of standing/reclining. Forget about
manual compression vs. automated cuff inflators, that is another decisive
issue as well.

Matthew Wise, RVT

On Jan 30, 2008 1:34 PM, Johnson, Bill <[log in to unmask]> wrote:

> The issue of reflux time has been around for decades.  I have seen 1 sec,
> 2 sec and 3 sec used as a cutoff time for normal, but little in the formal
> research arena.
> This reference might help;
> Labropoulos N, Tiongson J, Pryor L, et al.  Definition of Venous Reflux in
> Lower Extremity Veins.  J Vasc Surg. 2003; 38: 793-798.  Their cutoff values
> for "normal" subjects were <500 ms in superficial veins and calf veins, <350
> ms for perforators, and <1000 ms for femoropopliteal veins. Longer duration
> of reflux was observed in supine subjects than standing subjects.
> If you are going to use this reference, I would strongly suggest reading
> the entire article.
> And of course, if the Valsalva maneuver or manual compression is not
> adequate, reflux measurements are pretty useless.
> Bill Johnson, RVT, FSVU
> ________________________________

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