Risk Factors for and Treatment of Chronic Venous Disease in Thai Patients

Introduction: The prevalence of chronic venous disease (CVD), a common health care problem, is still underestimated. A few previous epidemiologic studies have report Asian patients with this condition in western countries, but not in Asian countries. The aim of this study was to determine risk factors for CVD and its treatment in Thai individuals. Methods: In this cross-sectional study, we collected data of patients with CVD visiting Chulabhorn Hospital Vascular Clinic from 1 December 2018-1 October 2021. We reviewed medical records for patient characteristics, comorbidities, Clinical, Etiology, Anatomy, Pathophysiology (CEAP) categories, Venous Clinical Severity Score (VCSS), ultrasound findings and treatment. Results: The study cohort comprised 260 CVD patients with CVD of mean age 61.92 & PLUSMN; 12.82 years. Almost 80% of participants were female. A history of deep vein thrombosis (DVT) was the strongest risk factor for severe CVD. Other identified risk factors comprised body-mass index (BMI) > 30 kg/m2, and older age. The most common CEAP categories were C2 (39%) and C1 (33.8%). Superficial venous reflux was the most common location of venous reflux in this study, 67.32% of participants having great saphenous vein reflux and 16.99% small saphenous vein reflux. Only 4.76% of our cohort had both reflux and obstruction. Most of the participants had undergone compression therapy, approximately half of them complying well with wearing of stockings. Nineteen percent of our cohort had undergone sclerotherapy and 14% surgery, which comprised radiofrequency ablation in 97% of them. Conclusion: The major risk factors for severe CVD identified in this study were deep vein thrombosis, body mass index > 30 kg/m2 and older age. The most common CEAP category was C2 (39%). GSV was the most commonly involved venous system. Involvement of numerous venous systems was a risk factor for severe CVD.