Varicose vein treatment, or endovenous ablation, is a minimally invasive treatment that uses radiofrequency or laser energy to cauterize (burn) and close abnormally enlarged veins in the legs, a condition called varicose veins.
Normally, blood circulates from the heart to the legs via arteries and back to the heart through veins. Veins contain one-way valves which allow blood to return from the legs against gravity. If the valves leak, blood pools in leg veins which can become enlarged or varicose.
Endovenous ablation is an image-guided procedure that uses heat generated by radiofrequency or laser energy to seal off these faulty vessels, diverting blood flow immediately to nearby healthy veins.
Ablation catheters cannot be easily passed through a tortuous vein, or a vessel with many turns and bends. Consequently, the procedure is typically used to treat larger varicose veins, such as the great saphenous vein, which extends from the groin down the inside of the thigh into the inner calf.
Endovenous ablation is successful at closing the abnormal target vein almost 100 per cent of the time, but small dilated branches that persist in the skin often require additional treatment with phlebectomy (a minor surgical procedure to extract them) or sclerotherapy (injection of a liquid medication to seal them off). Subsequent treatments are usually scheduled after an ablation procedure.
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