Prevention of venous thrombosis in surgery. Very brief advice]

Avoid immobilization before and immediately after the operation : do not rely simply on raising of the legs but ensure that the patient walks as soon as po-sible. Apply elastic support bandages to the lower limbs before, during, and after the operation. Limit the duration of the operation and of the general anaesthesia. Reduce trauma of the vessels to a minimum during the operation. Give aspirin before and after the operation : 3 X 0,50 g.