Demir, DenizTosun, AliKahraman, NailÖzsin, Kadir KaanSanrı, Umut SerhatKorkmaz, Ufuk Turan2021-06-232021-06-2320170393-63842283-9720https://doi.org/10.19193/0393-6384_2017_4_086https://hdl.handle.net/20.500.12491/9314Introduction: An arteriovenous fistula with a high- flow rate adversely affects the hemodialysis treatment of the patients. There are several methods that help to decrease the high- flow rate. This study aims to investigate the effects of circular narrowing technique on lowering the flow rate with a polytetrafluoroethylene graft for the treatment of patients with a high- flow arteriovenous fistula and to present our shortand mid- term results. Materials and methods: Seven patients with a fistula flow rate of above 1200 ml/min were retrospectively analyzed. All patients were operated on under local anesthesia and underwent a circular narrowing procedure with a polytetrafluoroethylene graft. Additional aneurysmectomy was performed on the patients with aneurysms. Fistula flow rates were recorded at baseline and following the procedure. Results: Postoperative thrill was observed in all patients. The mean preoperative flow rate of arteriovenous fistula was 1428 +/- 230 ml/min. At three to six months following the procedure, it was 655 +/- 98 ml/min. Two patients suffered from pain in the arm at rest preoperatively and the pain resolved postoperatively. All patients continued to receive hemodialysis through the native fistula on a regular basis in the postoperative period. Conclusion: Our study results suggest that the circular narrowing technique with a polytetrafluoroethylene graft is an effective modality that can be easily used in patients with high- flow arteriovenous fistulas.eninfo:eu-repo/semantics/closedAccessHigh-Flow RateFlow ReductionArteriovenous FistulaCircular Narrowing TechniquePolytetrafluoroethylene GraftArticle10.19193/0393-6384_2017_4_086334587591WOS:000403079700007Q4