Anti-embolism Stockings are used to minimize the changes of DVT during or immediately after surgery. DVT stands for Deep Vein Thrombosis. Deep Veins are those deep inside the leg as opposed to Superficial Veins which are closer to the skin’s surface. A thrombus is a clot in the blood. Once a clot is formed, it may travel through the veins and reach the lungs. This can result in a fatal pulmonary embolism. Clot formation is likely if the blood is stagnant. This happens in long surgeries (more than 30 minutes) where the patient is immobile for a long time. Anti-embolism stockings provide a mechanical pumping action and assist in forcing the blood through the veins. This reduces the possibility of clot formation.