Tissue Markers Predictive of Early Stenosis in the Arterovenous Fistula for Hemodialysis

"Primary objective~1. Identify any predictive or favoring tissue markers of early stenosis in AVF for hemodialysis.~ Secondary objectives~2. Compare the results on the possible different expression of tissue markers before and during dialysis.~3. Compare the results on the possible different expression of tissue markers between AVFs made with portions of cephalic vein and AVFs made with portions of basilic vein, in order to evaluate whether the different topographic origin of the AVF can influence its duration."