Category Archives: Sclerotherapy


Commonly the liquid sclerosants, sodium tetra-decyl sulphate (STS) or polidocanol, are agitated with a gas to produce foam ready for administration into veins. The optimal ratio of sclerosant to gas is controversial as is the type of gas used. Ambient air is popular and readily available but contains nitrogen which seeps into the general circulation.… Read More »


This is an abbreviation for Ultrasound-Guided Foam Sclerotherapy. It is a common method used for treating varicose veins. It can be used for destroying the varicose veins themselves as well as the saphenous veins which are usually the main veins responsible for causing varicose veins. A detergent is mixed with a gas to produce the foam.… Read More »