Clinical Research Directory

Inclusion Criteria: * Age over 18 years; * Varicose veins (VVs) in the system of great saphenous vein (GSV) of one lower limb; * Performed endovenous thermal ablation (ETA) of the GSV trunk - endovenous laser ablation (EVLA) or radiofrequency ablation (RFA) - and elimination of varicose tributaries by mini (micro) phlebectomy or sclerotherapy during the 30-45 days before enrollment; * The technical success of the performed ETA, the absence of reflux in the GSV trunk and the absence of residual VVs; * Lack of signs of chronic venous disease (CVD): clinical class of C0-1 according to the Clinical-Etiology-Anatomy-Pathophysiology (CEAP) classification; * Lack of vein-specific symptoms - the intensity of any validated vein-specific symptom is less than 30% according to the numeric rating scale (NRS); * Signed informed consent. Exclusion Criteria: * Bilateral VVs; * Primary reflux outside the GSV trunk (including combined); * History of deep or superficial veins thrombosis; * Verified deep vein reflux; * Verified non-thrombotic or post-thrombotic venous obstruction; * Verified pelvic venous insufficiency; * Persistence of superficial reflux after ETA; * A tendency for recanalization of previously obliterated veins; * Persistence of residual VVs - clinical class of C2 by CEAP; * Persistence of signs of CVD - clinical class of C3 and higher by CEAP; * Persistence of one or more vein-specific symptom with an intensity of 30% and higher by NRS; * The need for long-term use of elastic compression; * Contraindications or restrictions for the long-term use of GCS; * The need for long-term use of vein-active drugs (more than 1 month); * Refusal to participate in the study.