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Deep mostly, but have seen this also in superficial vessels.  The patient in most cases is also taking a large deep breath prior to performing valsalva.  Does this have an impact?  Thanks

>>> Terry Zwakenberg <[log in to unmask]> 2/4/2011 8:25 AM >>>
Which vessels are you encountering this in, deep or superficial
On Feb 4, 2011 7:20 AM, "Garrett R" <[log in to unmask]> wrote:
> Just curious what exactly is happing physiologically when a patient is
bearing
> down for a venous reflux exam and flow increases below the baseline
instead
> of above the baseline. Is this still considered reflux? And, why doesn't
flow
> cease if they are negative for valvular incompetence. Thanks everyone.
>
> Garrett
>
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