I have small veins and after seeing the Vascular Surgeon who did my fistula I knew I would be having 2 procedures..the first to creat the fistula in my lower arm before the elbow and then 6 weeks later he went in and lifted the fistula to my upper arm so it is longer and just below the skin..works very well.
My vascular surgeon said the exact same thing. I ended up with a graft though because my veins weren't good enough though. When you say you have 5 inches, what are you talking about?