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Arteriovenous Fistula (AV Fistula)
Arteriovenous Fistula (AV Fistula) is made by joining an artery and a vein under the skin in your arm. When the artery and vein are joined, the pressure inside the vein increases, making the walls of the vein stronger. The stronger vein can then receive the needles used for hemodialysis.
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An anal fistula is a red bump, sometimes with pus, that occurs around the anus and buttocks.