Clinical Research Directory

Inclusion Criteria: * Age \>18 years and \<80 years, and able to understand the requirements of the study and provide informed consent and accept the exams and follow-up. * C2 - C5 varicose veins / CVI Symptomatic primary GSV, SSV, or AASV incompetence, with reflux \>0.5 seconds on color duplex, eligible for patients undergoing radiofrequency ablation. * Color replica ultrasound or venography of the lower extremity veins shows saphenous varicose veins without evidence of deep venous stenosis, filling defects, or ultrasound abnormalities. * No contraindications to the wearing of compression stockings (e.g., arterial insufficiency, skin allergies) Exclusion Criteria: * Severe deep vein valve insufficiency or acute deep vein thrombosis of the lower extremities * Previous history of high ligation and dissection of the saphenous vein, recurrence of collateral branches of the deep vein * Superficial vein thrombosis is present at the treatment site, with local redness, swelling, warmth, pain, and significant signs of inflammation