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  • Title: An Italian experience with mechanochemical ablation of the saphenous vein since 2012.
    Author: Mirandola M, Griso A, Migliara B, Cappellari TF, Giovannini F, Lino M.
    Journal: J Vasc Surg Venous Lymphat Disord; 2020 Nov; 8(6):999-1005. PubMed ID: 32179039.
    Abstract:
    OBJECTIVE: Mechanochemical endovenous ablation is a nonthermal method to ablate superficial incompetent veins. The aim of this paper was to assess short-term complications and 5-year follow-up outcomes. METHODS: This is a retrospective single-center study of data collected prospectively. We treated, in an outpatient setting, 395 primary, symptomatic, unilateral, incompetent varicose saphenous veins. No patients were treated bilaterally in the same session. The majority were great saphenous veins (92.3%), and the others were small saphenous veins. Procedures were performed with a mechanochemical endovenous occlusion catheter (ClariVein endovenous occlusion catheter; Merit Medical, South Jordan, Utah) and polidocanol 2% in liquid form. RESULTS: Follow-up was available for 329 patients treated between September 2012 and September 2017 with a mean follow-up time of 20 ± 18 months (range, 6-60 months). Technical success was achieved in 99.5%; in two patients, we were unable to complete the procedures because of vein spasm leading to catheter damage and inability to infuse the sclerosant. Follow-up was performed with clinical evaluation and duplex ultrasound scan at 1 week, 1 month, 6 months, and 1 year and then once every year. The overall survival rate free from recanalization was 92.4%. Anatomic success is 94% at 1 year, 91% at 2 years, 88% at 3 years, 88% at 4 years, and 84% at 5 years. The follow-up at 5 years includes 23 patients, 5 of whom presented with recanalization; moreover, in this series, in 36% of cases, the veins completely disappeared on duplex ultrasound scan. CONCLUSIONS: The ClariVein catheter is associated with a good occlusion rate, comparable with other techniques including thermal techniques, without major complications.
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