Dialysis access is an entrance way into your bloodstream that lies completely beneath your skin and is easy to use. The access is usually in your arm, but sometimes in the leg, and allows blood to be removed and returned quickly, efficiently, and safely during dialysis or, less commonly, for other procedures requiring frequent access to your circulation.
Dialysis, also called hemodialysis, is the most common treatment for kidney failure. A dialysis machine is an artificial kidney designed to remove impurities from your blood. During dialysis, physicians use the dialysis access to remove a portion of your blood to circulate it through the dialysis machine so it can remove impurities and regulate fluid and chemical balances. The purified blood is then returned to you, again through the dialysis access.