To evaluate the entire graft course for stenosis or access problems, what is the primary purpose of imaging from the graft to the distal vessels?

• A. Assess for infection
• B. Determine blood pressure changes
• C. Evaluate for stenosis or access problems
• D. Plan surgical revision

Answer: (C)

When evaluating a dialysis graft, tracing the entire circuit from the arterial graft connection through the graft to the distal outflow vessels is done to identify where flow is restricted or dysfunctional. The primary goal is to detect stenosis or other access problems that can impair dialysis efficiency or lead to thrombosis. By locating the exact segment causing reduced flow—whether at the arterial or venous anastomosis, within the graft, or in the distal/outflow veins—you can target the appropriate treatment, such as angioplasty or revision. Infection or blood pressure changes may be relevant in a broader clinical context, but they are not the main purpose of this imaging.