RadioFrequency Ablation
What is radiofrequency ablation technique?
It is a medical procedure based from the concept of thermal destruction using electrical energy in order to close off faulty venous tissues. It is done to reduce pain in the legs brought about by varicose veins. It is generally conducted in an outpatient setting, and under local anaesthesia only.
How is it done?
This works by the application of electrical energy to the veins, which is converted to heat energy and that causes irreversible damage to the varicose veins. Firstly, a local anaesthesia will be given and then radiofrequency energy is directed via a catheter inserted through a small incision. An imaging device like an X-ray will guide the vein specialist to aim the needle to the right target vein.
The catheter contains deployable electrodes at its tip which should touch the walls of the vein to incur heat. The radiofrequency ablation console manufactured by VNUS Medical Technologies (designed specifically for venous ablation), shows the time, temperature, impedance and power (in watts).
After the treatment, the patient will be advised to wear compression stockings for a week or more.
What is the effect of this technology?
After heating up the vein walls, the damaged tissue now forms a scar. And this scar tissue closes off the varicose veins completely. As a result, the unsightly appearance of varicose veins will vanish, together with the throbbing and aching pain you experience in your legs.
What are the possible side effects associated with radiofrequency ablation?
After the procedure, one might experience leg numbness which may be due to the effect of anaesthesia given. Others do experience mild discomfort which can be relieved by application of ice or use of pain medications. Skin burns, burning or prickling pain, and blood clots are some possible side effects too.
