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Magnetic Resonance Angiography (MRA)

A technique to visualize the arterial and venous systems using a radiologic contrast material, usually gadolinium, as the imaging agent.

Mature Fistula

Per Kidney Disease Outcomes Quality Initiative (KDOQI) guidelines, “ a mature fistula is one that can provide prescribed dialysis consistently with 2 needles for more than two thirds of dialysis sessions within 4 consecutive weeks.” A duration of time measuring intra-access patency that starts from the date of vascular access creation (AV access) or insertion (central venous catheter) to the date of vascular access abandonment.

Patency (Cumulative)

Physical Examination (of Vascular Access)

Inspection, palpation, and auscultation of the vascular access.

Prevalence

Prevalence is a measure of a disease permits determination a person's likelihood of having a disease. Therefore, the number of prevalent cases is the total number of cases of disease existing in a population.

Stenosis

A constriction or narrowing of a duct or passage; a stricture.

Ultrasound

The use of ultrasonic waves for diagnostic or therapeutic purposes, specifically to image an internal body structure.

Venogram

An x-ray examination that uses an injection of contrast material to show how blood flows through the veins.