Endovenous laser Therapy (EVLT) is a percutaneous technique that is
performed in–office using laser energy to ablate incompetent superficial veins
that can cause pain and/or swelling. The procedure may take an average of 15-
20 minutes. The axial veins are the primary target for this therapy and include
the great saphenous vein (GSV), small saphenous vein (SSV), and accessory
saphenous veins (ASVs).
Chronic venous disease refers to a wide spectrum of morphologic (i.e, venous
dilation) and/or functional abnormalities (e.g, venous reflux) of long duration.
Inadequate muscle pump function, incompetent venous valves (reflux), and
venous thrombosis or obstruction are causes of elevated venous pressure
(venous hypertension), which initiates a sequence of anatomic, physiologic, and
histologic changes leading to vein dilation, skin changes, or skin ulceration.
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