The EVA procedure is a relatively new method of treating varicose veins without the need for surgery. High intensity light energy (laser light) or radiofrequency energy (RF) is used to destroy the abnormal veins.
Approximately 60 minutes.
A local anaesthetic (lignocaine) is used; no sedation is not required.
Risks & Complications
There are no known long term risks associated with the use of lasers in medical treatments.
The risk of significant bruising or superficial phlebitis is approximately 1 in 20. This is the result of an excessive inflammatory ‘healing’ reaction and occurs directly over the treated veins. It cannot be predicted but may be avoided by adhering to the compression and walking requirements after treatment. Almost all cases resolve completely within 2-4 weeks.
The risk of patchy numbness is approximately 1 in 150. This is the result of irritation or damage to superficial nerves adjacent to treated veins. Most cases of numbness resolve spontaneously over 3-6 months but may also be permanent. Using tumescence during the procedure reduces this risk.
The risk of deep vein thrombosis (DVT) is approximately 1 in 400. This risk returns to normal 2-4 weeks after the procedure. The risk of DVT is reduced by: using Clexane™ (a blood thinner), minimising procedure time, conducting exercise after the procedure and undergoing a follow-up ultrasound examination.
In almost all cases the EVA procedure causes minimal post-procedure pain, has a quick recovery period and results in almost immediate relief of symptoms. Walking immediately after the procedure is an absolute requirement and must be continued for at least 14 days after. Pain and excessive bruising can be minimised through the use of extra compression (grade 3).
Duration of Results
Published clinical and scientific studies show that EVA has approximately an 85-90% continued success rate 10 years after treatment.
See: Robert J. Min, MD, Neil Khilnani, MD, and Steven E. Zimmet, MD. “Endovenous Laser Treatment of Saphenous Vein Reflux: long-term results”. Journal of Vascular Interventional Radiology 14 (2003): 991–996.