Abstract
The aim of this study was to assess the efficacy and safety of endovenous thermal ablation (EVTA) in treating large diameter, ≥12mm, incompetent great saphenous vein (GSV) in comparison to smaller ones. A retrospective comparative study was undertaken including 196 patients (205 limbs) undergoing EVTA. According to maximum GSV diameter patients were divided into two groups (group A <12mm, group B ≥12mm). Primary outcome was anatomic success defined as absence of reflux of GSV. Secondary outcomes were complications, postoperative pain using the 10-cm Visual Analog Scale (VAS) and improvement of Venous Clinical Severity Score (VCSS) and Chronic Venous Insufficiency Quality-of-Life Questionnaire (CΙVIQ-20) scores assessed at 7- days, 1month, 12months and 24months postoperatively. 118 patients with GSV diameter <12mm (group A) and 87 with GSV diameter ≥12mm (group B) were included. Patients' demographics, CEAP classification and length of ablated vein did not differ between the groups. Preoperative VCSS and VAS pain score were significant greater in group B (6.03 vs 6.94, p = .04 and 5.21 vs 5.77, p = .032, respectively). No differences in adverse events were observed post-operatively among groups. GSV occlusion rate at 1month was 98.3% (SE 1.3%) in group A and 96.5 % (2.2%) in group B (p = .3), at 12months 95.7% (SE 2%) and 94.2% (SE 2.8%) (p = .5), and at 24months 94% (SE 2.4%) and 93.1% (SE 3%) (p = .4) respectively. Both groups experienced significant and similar improvement in their VCSSs and CIVIQ scores postoperatively. In a subgroup analysis among different EVTA and GSV >12mm, 1470nm endovenous laser ablation (EVLA) and radiofrequency ablation (RFA) showed comparable results in terms of occlusion rates, complications, VCSS and CIVIQ scores. Endovenous thermal ablation techniques are efective and safe in the treatment of GSV incompetence regardless the diameter of the GSV. Both 1470nm EVLA and RFA techniques performed similar outcomes.
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