[Midarm arteriovenous fistula: single-center experience]. / Fistola artero venosa midarm: esperienza monocentrica.

In uremic patients on hemodialysis, a first vascular access using native vessels tailored into a radiocephalic arteriovenous fistula (AVF) on the wrist is the gold standard in vascular access quality. However, among the uremic population the percentage of older patients affected by diabetes or by severe generalized vascular disease is growing. In these patients distal radiocephalic AVFs often have a limited survival. This induced us to design a technique for tailoring vascular accesses at a proximal site. In the past two years (2006-2007) we created 19 AVFs at the midarm position (midarm AVF) using the proximal section of the radial artery. Midarm AVF was the second choice in 70% of patients after failure of a distal AVF and the first choice in 30% of patients. The survival of this type of access has been excellent. We have registered only one thrombosis after 6 months. In four cases access was interrupted because of the death of the patients. The remaining 14 accesses are working perfectly well. Our experience leads us to conclude that midarm AVF is not only an important intermediate step after the failure of a distal AVF and before the application of a proximal AVF, but in a population of patients with diabetes and generalized vascular disease it should probably be proposed as the AVF of choice.