What is the minimum arterial lumen diameter for a hemodialysis access graft?

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Prepare for the Clinical Sonography III Exam with flashcards and multiple choice questions. Each question includes hints and explanations. Excel in your exam!

Multiple Choice

What is the minimum arterial lumen diameter for a hemodialysis access graft?

Explanation:
In hemodialysis access grafts, the arterial inflow must provide enough blood to support the high-flow circuit used for dialysis. The smallest arterial lumen that can reliably supply that flow is about 2 millimeters, so the minimum arterial diameter for a graft is 2 mm or greater. If the artery is smaller than this, inflow is inadequate, increasing the risk of thrombosis and graft failure. Larger diameters (like 2.5 or 3 mm) are preferable but exceed the minimum threshold needed to maintain graft patency and function.

In hemodialysis access grafts, the arterial inflow must provide enough blood to support the high-flow circuit used for dialysis. The smallest arterial lumen that can reliably supply that flow is about 2 millimeters, so the minimum arterial diameter for a graft is 2 mm or greater. If the artery is smaller than this, inflow is inadequate, increasing the risk of thrombosis and graft failure. Larger diameters (like 2.5 or 3 mm) are preferable but exceed the minimum threshold needed to maintain graft patency and function.

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