Predictive value of ultrasound classification for autologous arteriovenous fistula stenosis in short-term efficacy of ultrasound- guided percutaneous transluminal angioplasty

Abstract To analyze the efficacy of percutaneous transluminal angioplasty (PTA) with ultrasound for different types of arteriovenous fistula (AVF) stenosis. Methods: Clinical data of 51 ESRD patients admitted to the Hemodialysis Center of Huashan Hospital for PTA due to AVF stenosis from January 2018 to May 2020 were analyzed retrospectively. According to the location and etiology of stenosis, AVF stenosis were divided into type I to III and type A to C. The postoperative stenosis recovery, flow improvement, technical success rate and short-term restenosis rate of different types after treatment were observed. Results: The success rate of PTA was 96.2%, and the 9 cases relapsed within 6 months. After operation, the flow volume was significantly increased( P <0.005), in which the type A and C were more markedly than type B ( P <0. 05). Two cases without technical success were type AII, and the main short-term relapse stenosis were related to intimal hyperplasia. Conclusion: PTA is an effective treatment for AVF stenosis. The drainage vein was the predilection site of stenosis. The postoperative flow volume of type A and C were not as high as that of type B, while the type with intimal hyperplasia was easy to relapse, and open surgery might be considered if necessary.