Signs
 

Augmentation Test

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Overview

    • Test For

    • Inflow stenosis
    • How to Perform

    • Use a finger to occlude outflow from the fistula a few centimetres from the anastomosis.
    • Interpretation

    • Normal - the fistula becomes hyperpulsatile, and the thrill disappears.
    • Inflow stenosis - the fistula remains weakly pulsatile
    • Accessory vein - the fistula becomes hyperpulsatile, and the thrill persists..
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