Radiofrequency Ablation

How RFA Works

A thin catheter is inserted through a needle puncture under ultrasound guidance. Tumescent local anaesthesia — a large volume of dilute local anaesthetic — is infiltrated along the entire length of the vein. The catheter delivers radiofrequency energy in 20-second cycles at 120°C, thermally closing the vein segment by segment from junction to puncture site.

GSV vs. SSV Treatment

• GSV RFA — targets saphenofemoral junction reflux, treating medial thigh and calf varicosities
• SSV RFA — addresses saphenopopliteal junction reflux behind the knee, requiring careful nerve proximity mapping

RFA vs. Laser Ablation

Both RFA and endovenous laser ablation (EVLA) are effective first-line treatments with comparable long-term closure rates. RFA is associated with less post-procedural bruising, pain, and recovery time compared to older laser wavelengths.

What to Expect

Day procedure under local anaesthesia; 30–60 minutes per limb. Return to light daily activities and desk-based work is typically possible the same day or the following day. Compression stockings are worn for 1–2 weeks post-procedure.

Results & Coverage

Published clinical data demonstrate GSV closure rates of 90–95% at five years with RFA. In Singapore, RFA may be covered by Medisave and integrated shield plans when clinical criteria are met.