Combining small hypodermic needles (27g and 30g) with meticulous technique, we can inject different chemical detergents and sclerosants into varicose veins. Sclerosants agitate the inner wall of the vein, causing it to spasm, clot off, and get absorbed by the body. This technique may be used in isolation for spot veins of 0.1 mm-2.0 mm or as part of a therapy plan following the treatment of truncal or reticular veins.
This technique represents an evolution of liquid sclerotherapy in which advanced compounds are mixed with sterile gases to create a stable, effective sclerosant. Foam sclerotherapy is used to treat larger (>2.0 mm), underlying vein abnormalities which cannot effectively be treated using standard liquid sclerotherapy. Foam sclerotherapy is used to treat veins larger than 2.0 mm and is often administered using ultrasound guidance. The foam causes intense spasm and clotting of the treated vein. Once clotted, the affected vein is absorbed by the body.
A foam sclerotherapy procedure being performed on a female patient.