BACKGROUND: Obesity is growing in the hemodialysis (HD) population. Few scholars report variable effects of increased body mass index (BMI) on native fistula. Reports on obesity effects on arteriovenous graft (AVG) patency are lacking. We report our experience. METHODS: AVGs placed in our center between January 2006 and December 2010 were included. Data were collected retrospectively from electronic records. The primary end point was AVG thrombosis. The secondary end points were death, kidney transplant, or lost to follow-up. Graft patency and first intervention outcome were recorded. Study groups were divided into obese and nonobese groups. IBM SPSS 20 was used for analysis. A P value <
0.05 was considered significant. RESULTS: 143 AVGs were included. The follow-up was 669 ± 708 [0, 3,042 days (mean ± SD, min, max)], and 0.49% (70) of grafts were placed in obese patients. The BMI ranged between 17 and 51 Kg/m