Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 60 11 2023 01 10 670 674 Hossien Hemmati Department of Vascular Surgery, Razi Clinical Research Development Unit, Guilan University of Medical Sciences, Rasht, Iran Mohammad Sadegh Esmaeili Delshad Department of Vascular Surgery, Razi Clinical Research Development Unit, Guilan University of Medical Sciences, Rasht, Iran Mohammad Taghi Ashoobi Department of Vascular Surgery, Razi Clinical Research Development Unit, Guilan University of Medical Sciences, Rasht, Iran Habib Eslami kenarsari Razi Clinical Research Development Unit, Guilan University of Medical Sciences, Rasht, Iran Mohaya Farzin Department of Physiology, Razi Clinical Research Development Unit, Guilan University of Medical Sciences, Rasht, Iran Seyedeh Maral Mousavi Razi Clinical Research Development Unit, Guilan University of Medical Sciences, Rasht, Iran 2022 03 28 2022 12 17 Hemodialysis access has been considered as a support for end-stage renal patients. We measured the hemodynamic changes of the distal part of the upper extremity immediately after providing the AVGs in each method mentioned above and then compared the results. This method is a novel one and hasn’t been used in any other studies before. We studied 32 patients referred to the vascular surgery department of Rasht Razi Hospital between 2019-2020 (using the Convenient Sampling method). This study is a case-control study. Out of 32 patients referred to the vascular surgery department of the hospital, 68.8% were male, and their mean age was 53.41±12.75 years, ranging from 28 to 78 years. Changes in distal arterial hemodynamics of the upper limb before and after clamping in dialysis venoarterial loop versus straight grafts are different in studied patients (P<0.05). The mean hemodynamic changes before and after clamping in loop venoarterial grafts (19.5000) are less than straight grafts. In dialysis patients who do not have any superficial vein suitable for venous, arterial fistula, surgical placement of artificial grafts in the upper limb is appropriate. Based on the results of this study, the loop method seems to have lesser ischemic Complications and can be applied to dialysis patients. https://acta.tums.ac.ir/index.php/acta/article/view/10063