Fig. 1

Flow chart of screening and enrollment procedure in end-stage renal disease patients. Fifty-three percent (70/131) of the original screened patients remained eligible; 16 of the 22 patients who consented completed the full study. Atrial fibrillation and presence of bilateral arteriovenous fistulas accounted for 59 % of exclusions. AVF arteriovenous fistula, BMI body mass index, ESRD end-stage renal disease