|Indication||Appropriate Use Rating|
|Assessment Prior to Access Site Placement∗|
|“Failure to Mature”|
|Symptoms and Signs of Disease†|
A = appropriate; AVF = autogenous arteriovenous fistula (including venous transpositions); AVG = prosthetic arteriovenous graft; M = maybe appropriate; R = rarely appropriate.
↵∗ Ultrasound assessment prior to creation of dialysis access (AVF or AVG) typically includes a combined arterial and venous duplex examination that is performed to determine the adequacy of superficial veins (patency, size, and length of conduit), patency of central venous outflow, and adequacy of adequate arterial inflow. Determination of central venous patency is particularly important for patients with a history of prior central venous catheter(s).
↵† In a mature AVF or AVG that is being accessed for hemodialysis.