Dialysis Technician Practice Exam

What sound should be assessed when examining a fistula or graft prior to use?

1. Click

2. Whistle

3. Bruit

4. Gurgle

The correct answer is: Bruit

When examining a fistula or graft prior to use in dialysis, the presence of a bruit is a critical sound to assess. A bruit is a swishing sound that occurs due to turbulent blood flow through the vascular access site, which is indicative of proper functioning of the fistula or graft. This sound can be detected using a stethoscope placed over the site. The presence of a bruit signifies that the blood is flowing adequately through the access, which is essential for effective dialysis treatment. If a bruit is not present, it may suggest issues such as stenosis or thrombosis, which could compromise the access and impact dialysis effectiveness. While other sounds like a click or gurgle might be observed, they do not provide the specific information related to the patency and functionality of the vascular access as effectively as the bruit does. Therefore, assessing for a bruit is an essential part of the pre-dialysis checks to ensure patient safety and optimal treatment.