Abstract: 【Abstract】Objective Fistula occlusion caused by thrombosis is one of the common arteriovenous graft (AVG) complications. This article summarizes the success rate and our experiences about endovascular treatment of thrombosis in AVG under the guidance of ultrasound. Methods A total of 148 patients with AVG thrombosis were treated in our hospital in the period from Jan. 2014 to Jun. 2017, including 78 patients using ultrasound assisted endovascular treatment and 70 patients using ultrasound assisted incision treatment. The two groups were compared for success rate, operation time, surgical trauma and primary patency after the intervention for 3 and 6 months. Results Ultrasound assisted endovascular treatment and ultrasound assisted incision treatment effectively resolved the AVG thromboses in 74 of the 78 patients (95%) and 68 of the 70 patients (97%), respectively. The operation time was 74.95±5.78min for endovascular treatment patients, and was 109.6±7.85min for incision and thrombectomy patients (t=3.55, P=0.001). The surgical trauma was less in endovascular treatment patients than in incision and thrombectomy patients. The primary patency rates in endovascular treatment patients and incision and thrombectomy patients were 84±1% and 85±2%, respectively, after the operation for 3 months (t=0.58, P=0.29), and were 73±1% and 75±2%, respectively, after the operation for 6 months (t=0.34, P=0.37). No serious complications occurred in the two groups. Conclusion Endovascular treatment of thrombosis in AVG under the guidance of ultrasound is a safe, minimally invasive and effective method.

Key words: Arteriovenous graft, Occlusion, Thrombosis, Ultrasound, Endovascular treatment, Hemodialysis