What is the difference between a fistula and a shunt?

answered:

Dialysis shunts.

Dialysis
A shunt is a term for the connection that shunts blood from an artery to a vein, bypassing the microscopic network in the tissues that normally connect them. This allows a high blood flow access for pulling blood from the body to the dialysis filter. A fistula is a shunt that has a direct connection of a native artery and native vein, rather than using an artificial tube to make the connection.
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Dialysis Body Artery Blood Fistula Shunt

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Fistula
Both are types of hemodialysis access. Arterivenous Fistula (AVF) is a connection between and artery and vein, and arteriovenous graft (AVG) is implantation of an artificial usually PTFE graft under the skin for dialysis.
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Artery Dialysis Fistula Graft Implantation Shunt Skin Veins