Patients
tumor, allergic, CEAP, DVT, active ulcer, liver and renal failure, SVT
SVT, TUMOR, DEEP VEIN THROMBOSIS (DVT), HYPERCOAGULABLE STATE, DISEASES, DVT
This is a single center retrospective cohort study, which retrospectively analyzed the clinical data of 593 VV patients treated in Sun Yat-sen Memorial Hospital of Sun Yat-sen University from 2015 to 2021. Doppler ultrasound, combined with clinical examination, was used in the diagnosis of SVT. By consulting the electronic medical record, the demographic and clinical information such as patient gender, age, weight and basic diseases were extracted. Preoperative evaluation of VV patients included CEAP grade and VCSS score [Inclusion criteria: VV patients with the CEAP grade of C2-C5 and at the age 18 to 75; SVT limited to calf.Exclusion criteria: (1) Patient has a history of Deep vein thrombosis (DVT) or is suffering from DVT; (2) Patients with liver and renal failure; (3) Patients in hypercoagulable state, such as patients with the history of tumor, in pregnancy or had a recent major surgery; (4) Patients with anticoagulant therapy before operation; (5) Patients with active ulcer; (6) Patients allergic to foam sclerosant.We conducted this study in line with the STROBE guidelines. All methods were carried out in accordance with the declaration of Helsinki. Since it is hard to obtain the subject's informed consent, and the research project does not involve personal privacy or commercial interests, written inform consent was waived by Ethics Committee of Sun Yat-sen Memorial Hospital. This study has been approved by ethics committee of Sun Yat-sen Memorial Hospital. The ClinicalTrials.gov identifier for this trial is NCT05380895.