Abstract: Objective Thrombosis is the main cause of arteriovenous graft (AVG) dysfunction. This research evaluated the long-term results of thrombectomy for AVG thrombosis and summarized the treatment experience. Methods This study retrospectively analyzed 51 patients who received thrombectomy and interventions for AVG thrombosis in our center from Aug. 2009 to Nov. 2016. The primary patency and second patency were analyzed. Cox regression was used to evaluate the risk factors for primary patency and second patency. Results The mean time of follow-up was 32.3 months. The primary patency rates were 54.9% and 36.1% after the treatment for one and two years respectively. The secondary patency rates were 94.1% and 72.2% after the treatment for one and two years respectively. Multivariate Cox regression demonstrated that balloon angioplasty in the first thrombectomy operation was the protective factor for primary patency (HR=0.361, 95% CI 0.135～0.968, P=0.043), and male gender was the risk factor for secondary patency (HR=3.008, 95% CI 1.010～9.032, P=0.049). Conclusion Thrombectomy and interventions were the effective treatment for AVG thrombosis. The long-term patency after thrombectomy was acceptable.

Key words: Arteriovenous graft, Thrombosis, Thrombectomy, Intervention