Abstract: 【Abstract】Objective To investigate the effect of different outflow tract selection on short-term patency rate of the artificial arteriovenous graft (AVG) and its related factors. Methods The end-stage renal disease patients treated in the Department of Vascular Surgery, People’s Hospital of Xinjiang Uygur Autonomous Region for AVG operation during the period from June 2017 to June 2019 were enrolled in this study. Their clinical data were collected. They were divided into group A (n=22) in which superficial veins were used for the outflow tract of AVG, and group B (n=15) in which a deep vein was used for the outflow tract of AVG. The general information and intraoperative data were compared between the two groups and analyzed by t-test and chi square test; the patency rate within 6 months after operation was compared between the two groups and analyzed by Kaplan-Meier survival method; the related risk factors were evaluated by Cox model. Results A total of 37 cases were enrolled in this study. Cephalic vein, basilic vein or median cubital vein was used as the outflow tract of AVG in group A, and the deep vein of brachial vein was used as the outflow tract of AVG in group B. There were no significant differences in general information and intraoperative data between the two groups, except that the type of artificial blood vessels was different (χ2=17.357, P=0.002). There was no significant difference in patency rate within 6 months after operation between the two groups (χ2=0.224, P=0.636). Cox model showed that operation site, gender, graft type, and group A or B were unrelated to the short-term patency rate of AVG (OR=1.265, 1.668, 3.936 and 1.880 respectively; 95% CI=0.241~6.626, 0.315~8.821, 0.657~23.590 and 0.398~8.881 respectively; P=0.781, 0.547, 0.781 and 0.426 respectively). Conclusion The short-term patency rate of the AVG was similar, whether superficial vein or deep vein was used for the outflow tract of AVG. However, large clinical samples are required to confirm this conclusion.

Key words: arteriovenous graft, outflow tract, patency