Strategy to prevent nerve injury and deep vein thrombosis in radiofrequency segmental thermal ablation of the saphenous veins using a new objective pain scale.

Objective: We evaluated the benefit of local anesthesia including tumescent anesthesia and active walking soon after surgery in preventing nerve injury and deep vein thrombosis caused during endovenous ablation.

Methods: Endovenous ablation was performed in 1334 consecutive patients. Varicectomy was performed using the stab avulsion technique. After surgery, patients were encouraged to walk 100-200 m inside the ward for 3-5 times/h. The pain was evaluated objectively using the Okamura pain scale and subjectively using the numerical rating scale.

Results: Stab avulsion was performed at 11.8 ± 8.0 sites and the mean operative time was 33.9 ± 15.2 min. The mean Okamura pain scale and numerical rating scale scores were 1.6 ± 1.3 and 3.0 ± 2.0, respectively. Deep vein thrombosis and pulmonary embolism were absent. The incidence of nerve injury was 0.3%.

Conclusions: Endovenous ablation should be performed with the patients under local anesthesia to prevent nerve injury and deep vein thrombosis.