Usefulness of Doppler Ultrasound Carried Out by the Vascular Surgeon After Loco-regional Anesthesia for Preferred Access

Just after locoregional anesthesia, the surgeon perform a duplex ultrasound to determinate if the target vessel chosen to create the arterio-venous fistulae match with the pre-operative duplex performed during the consultation. So the plan can be changed such as more distal, more proximal creation, changing vein or artery target.