We have observed that the lower limit of arteriovenous fistula blood flow accounting for 600 ml / mn as stated by KDOQI guidelines was not enough for performing adequate dialysis, at least in our patients. We had to prove our hypothesis through performing this study. Fifty patients on prevalent hemodialysis were included within our study. 12 patients formed low flow group I, 18 patients constituted moderate flow group II, and 20 patients formed high flow group III. Complete physical examination, including clinical fistula examination for patency, were performed for all patients. Laboratory tests performed for all patients included: URR %, serum calcium, serum phosphorus, calcium – phosphorus product, serum albumin, hemoglobin, serum Iron, serum ferritin, TIBC, TSAT %, Kt / V, serum creatinine, together with blood urea before and after HD session. Fistula blood flow and static venous pressure were determined by Doppler ultrasound. Fistulogram was performed to confirm the fistula stenosis site, whenever detected by Doppler. Mineral bone profile markers, Iron profile markers, together with malnutrition – inflammation complex indicators, were all in favour of moderate and high flow groups, mainly the moderate flow group II due to the presence of much less occurrence of complications than the other groups. We have to try to perform arteriovenous fistulae for ESRD patients needing regular dialysis, in such a way that fistula blood flow is above 800 ml / min, and it is better to be within the range of 801 – 1600 ml / min.
