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GLOSSARY

Anastomosis

A communication between an artery and a vein by surgical or endovascular techniques.

Arteriovenous Fistula

An arteriovenous fistula (AVF) creates a direct connection between a vein and an artery in the arm. This results in a closed circuit that provides adequate blood flow for hemodialysis. Blood can be withdrawn, cleaned through the dialysis machine, and returned to the body.

AV Access

The connection of an artery and vein for the purposes of establishing hemodialysis access.

AV Access Creation

The connection of an artery and vein for the purposes of establishing hemodialysis access.

Catheter

A thin flexible tube that is inserted into a blood vessel through which devices can be introduced or contrast dye or appropriate solutions can be injected.

Chronic Kidney Disease (CKD)

Slow and progressive deterioration of kidney function; an abnormality in the kidneys that is present for more than 3 months, and is graded stages 1, 2, 3a, 3b, 4, and 5 for minor to severe kidney disease.

Dialysis Access Usability

A dialysis access that can reliably and safely provide prescribed dialysis, per definition of mature fistula or graft.

Duplex Doppler Ultrasound

Combines Doppler and B-mode (grayscale) imaging to provide quantitative color velocity assessment (AV access flow) as well as anatomic visualization of stenosis/abnormality.

End Stage Renal Disease (ESRD)

The stage of renal impairment that appears irreversible, permanent, and requires a regular course of dialysis or kidney transplantation to maintain life.

Endovascular Arteriovenous Fistula (endoAVF)

An autologous fistula created by endovascular techniques, originally described by anastomosis of the proximal ulnar artery and proximal ulnar vein.

Fistula

Autologous arteriovenous fistula, also referred to as native fistula.

Fistula Maturation

The process by which a fistula becomes suitable for providing prescribed dialysis.

Flow

The amount of blood flowing through a system.

Insertion Site

The location at which the catheter enters the vein.

Incidence

A measure of a disease that allows determination of a person's probability of being diagnosed with a disease during a given period of time. Therefore, incidence is the number of newly diagnosed cases of a disease.