Conclusions
SVT
In short, we systematically compared the safety and efficacy of DS for VV patients with SVT below knee and patients had VV only. DS has been proven to be a safe and effective treatment for both patients with and without SVT below knee. and its short-term and long-term effects have been confirmed in our study. Taken together, our findings suggest that preoperative anticoagulation is not necessarily required. For VV patients with SVT below the knee, DS treatment can effectively reduce hospitalization time and lower in-patient expenses.