Which scan protocol is used to evaluate a hemodialysis access graft?

Which scan protocol is used to evaluate a hemodialysis access graft?

• A. Identify graft or fistula origin
• B. Scan upper brachial to distal radial arteries
• C. Scan course of graft-fistula
• D. Hand to right of screen

Answer: (B)

The key idea is to ultrasound the entire dialysis access circuit—from the inflow artery through the graft to the outflow veins. Evaluating a hemodialysis graft requires seeing every segment where problems commonly occur: the arterial inflow (to confirm adequate entry into the graft), the graft itself (to detect stenosis, aneurysm, or pseudoaneurysm), and the venous outflow (to ensure the drainage pathway is patent). Scanning from the upper arm arteries down to the distal radial arteries covers this whole pathway, allowing you to locate the arterial anastomosis, follow the graft along its course, and assess the distal venous outflow. This comprehensive view is why this protocol is preferred. Identifying the graft origin alone misses downstream issues; focusing only on the graft’s course may overlook inflow or outflow problems; and orienting the hand on the screen doesn’t constitute a procedural protocol.

The key idea is to ultrasound the entire dialysis access circuit—from the inflow artery through the graft to the outflow veins. Evaluating a hemodialysis graft requires seeing every segment where problems commonly occur: the arterial inflow (to confirm adequate entry into the graft), the graft itself (to detect stenosis, aneurysm, or pseudoaneurysm), and the venous outflow (to ensure the drainage pathway is patent). Scanning from the upper arm arteries down to the distal radial arteries covers this whole pathway, allowing you to locate the arterial anastomosis, follow the graft along its course, and assess the distal venous outflow. This comprehensive view is why this protocol is preferred.

Identifying the graft origin alone misses downstream issues; focusing only on the graft’s course may overlook inflow or outflow problems; and orienting the hand on the screen doesn’t constitute a procedural protocol.