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 This
site is designed to educate the public, patients and physicians with regard to
vascular disease. The site has information about available therapies,
diagnostic techniques and tools, and available services within the Northwest.
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Chronic venous insufficiency is a common problem in the
U.S., affecting approximately 5% of the general population. It is estimated
that 1/2 million patients suffer from ulceration of the lower extremity as a
result of longstanding venous disease.
An elaborate network of one-way valves normally prevent venous reflux
into the lower extremity which can result in venous hypertension. Incompetence
of this valvular system secondary to either dilatation (varicosity) or to
previous deep vein thrombosis allows gravity to act on a longer column of
fluid. The basic laws of physics predict an increase in venous pressure the
longer the column of fluid becomes (the more valves impaired). |
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