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Radiofrequency Ablation for Varicose Veins

Minimally-Invasive Endovenous Treatment


Radiofrequency ablation (RFA) is a walk-in/walk-out procedure for the treatment of varicose veins. It is as effective as open surgery, but can be done with no surgical incisions and minimal post-operative discomfort.

RFA is suitable to treat the main superficial veins in the thigh (long saphenous vein) or calf (short saphenous vein). It is not suitable for spider veins (telangiectases), which are treated using micro-sclerotherapy (see microsclerotherapy).

Most patients with varicose veins are suitable for the technique.

The treatment cannot be performed during pregnancy.




Advantages of RFA over Open Surgery:


Walk-in, walk-out procedure
Local anaesthetic (with or without sedation)
Short procedure time (~30 - 60 mins)
Minimal post-operative discomfort
Return to normal activity the next day
No scarring from surgical incisions


Preparing for the Procedure:


During your initial consultation, you will be fitted with a full-length class II compression stocking to wear following the procedure. The stocking must be brought with you on the day of treatment.

Warm clothes should be worn on the day of the procedure to help dilate the veins. A tracksuit is ideal, as the loose-fitting tracksuit pants can be easily worn over the compression stocking following treatment.

The procedure is usually done under local anaesthetic with some sedative medication. If the procedure is done in hospital, very occassionally a general anaesthetic is used. 

As you will receive sedative medication, you will need someone to drive you to and from the hospital for treatment.


Description of the Procedure:


The procedure is performed under ultrasound guidance. A small nick is made in the skin (usually on the inside of the leg at knee level) to introduce a sheath in to the main incompetent vein. The radiofrequency probe is fed through the sheath and positioned at the top of the vein (usually at groin level). A cold solution of saline (containing some local anaesthetic and adrenaline) is injected around the entire length of the vein to cause it to spasm down around the probe, numb the area, and protect surrounding structures. The entire length of the defective vein is then 'ablated' by heating the probe on the inside of the vein, causing it to shut down. The varicose veins which stem from the ablated vein are then injected with a sclerosant under ultrasound-guidance (see ultrasound-guided sclerotherapy). An inflammatory reaction ensues which absorbs the treated veins over the following months. If there are very large varicose veins, Mr Milne may elect to remove these via several small nicks in the skin (phlebectomies), but this is only done if the procedure is performed in the hospital operating suite.


If the procedure is performed in the hospital operating suite with an anaesthetist, nothing will be felt during the procedure, as deep sedation is used. If the procedure is performed in the office-based procedure room (no anaesthetist), there will be some stinging discomfort associated with the local anaesthetic injections and sclerotherapy. If you wish, a mild sedative tablet can be taken before the procedure.


Following the Procedure:


At the end of the procedure, a small, clear adhesive dressings is applied to the skin over the nick (usually on the inside of the knee), and a compression stocking applied to the whole leg. If phlebectomies are performed, steristrips will also be applied to the skin and sometimes an additional compression wrap over the stocking.

You will be asked to walk for 20 minutes following the procedure before returning home. This clears the deep veins of any residual sclerosant, minimizing the risk of deep vein thrombosis (DVT).

It is important to walk regularly in the days following the procedure. Avoid standing still for prolonged periods. When not mobilising, you can rest with your legs up. Whilst you can return to regular activities the next day, you should hold off on any heavy leg exercises (e.g. running, cycling, gym exercise classes) for 7 days. 

A follow up ultrasound will be organized for 24 - 48 hours after treatment to check the ablated vein and ensure there is no DVT.

The compression stocking should be worn full-time for the first 48 hours. After this, it can be taken down for showering, but otherwise it is ideal to wear full-time until day 7. If it is uncomfortable to sleep in, it can be removed at night when in bed. Between day 7 and 14, the stocking can be worn during the day for comfort if desired.

When showering, it is best to keep the water luke-warm during the first few days. On day 5 after the procedure, the small, clear adhesive dressings (in addition to any steri-strips if used) can be peeled off in the shower.

If you are planning travel soon after your procedure, please discuss this with Mr Milne. As a rule of thumb, you may travel short distances, under 4 hours, 2 weeks following the procedure. It is ideal to avoid flights/train/car travel over 4 hours duration for 4 weeks following the procedure. It is important to stay hydrated and walk around the cabin regularly whenever flying, and wear your compression stocking whenever flying. 


For general queries after the procedure, please contact the office and we will be happy to answer any questions.

You will be scheduled for a review appointment with Mr Milne after 4 - 6 weeks.

The main defective vein which has been treated with RFA shuts down in >99.5% of cases. As mentioned, the varicose veins which stem from the ablated vein are injected with a sclerosant at the time of the procedure, however they often need some additional injections in the post-operative period to finish off any residual varices and complete the treatment. This is termed 'top-up' ultrasound-guided sclerotherapy (see ultrasound-guided sclerotherapy).


Please Note:

- Occassionally, a mild discomfort is felt along the length of the ablated vein. It is often described as a 'pulling' sensation. This usually occurs between days 5 to 10, and settles on its own. It is rare to need anything more than panadol for this.

- It is expected that the varicose veins become hard and lumpy under the skin following sclerotherapy. This is a good sign, as it indicates that the veins have blocked following treatment. The lumpy veins usually become a bit tender to push on around day 5, and this can last a few weeks. This is another good sign, as it is associated with the inflammation that occurs in a successfully treated vein.  Again, it is rare to need anything more than panadol for this. Topical voltaren gel can be used to help things settle. You will notice the lumps gradually shrink down and disappear over the months following the procedure.

- If you experience any major leg pain or swelling, or any chest pain or shortness of breath, this should be investigated urgently. If it is after-hours, Mr Milne can be contacted via the paging service.


Summary of Potential Issues Following the Procedure:



  • It is normal to expect some discomfort and bruising overlying the treated veins. It is expected that they will be tender to push on.
  • This is related to the procedure itself, but also the inflammatory process which consumes the vein over the weeks to months following the procedure.
  • Usually no pain relief is required, but panadol and topical voltaren gel can be used.
  • It is important to stay active during this time.
  • Some ooze can occur in the first few hours following treatment.
  • This is not dangerous. It is usually stopped by applying 10 minutes of compression over the site of ooze and resting with the legs up for 20 minutes.
  • If persistent, you should contact the office and we will arrange for a second layer of bandaging to be applied.
  • Light-brown pigmentation occurs in about 25% of cases along the course of treated veins.
  • This is related to the sclerosant itself, and the iron component of blood being absorbed by the skin.
  • This usually fades slowly over time (usually within 6 months). It is rare to persist beyond 12 months.
Deep vein thrombosis (DVT):
  • Major DVT is rare (<0.5% of cases).
  • If this occurs, a course of oral anticoagulation is usually prescribed with a follow up ultrasound.
Very rare complications (<0.5% of cases):
  • Infection
  • Ulceration
  • Allergic reaction/anaphylaxis
  • Nerve injury
Recurrent veins (in the years following the procedure)
  • Recurrent varicose veins occur in ~20% of patients in the 5 years following treatment for varicose veins
  • If this occurs, a repeat ultrasound scan can be performed to determine the nature of recurrence and best treatment option

Main Consulting Rooms

Suite 37, Cabrini Medical Centre,
183 Wattletree Rd,
Malvern VIC 3144

For all enquiries...
Please contact the office between
8:30am to 4:30pm, Monday to Friday

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