Certified Dialysis Nurse Practice Test 2025 - Free Dialysis Nurse Practice Questions and Study Guide

Dialysis is a medical treatment designed to perform the functions of the kidneys, particularly in patients with kidney failure. One of the primary purposes of dialysis is to remove excess waste products and toxins from the bloodstream, which kidneys would normally filter out.

In patients with impaired kidney function, waste products such as urea, creatinine, electrolytes, and other metabolic byproducts can build up in the blood, leading to serious health problems. Dialysis uses a semipermeable membrane to filter blood, allowing the removal of these harmful substances while potentially balancing electrolyte levels.

This process not only helps to cleanse the blood of toxins but also assists in maintaining fluid and electrolyte balance, which is crucial for the overall health of individuals undergoing treatment. By effectively removing waste products, dialysis plays a critical role in preventing complications associated with kidney disease. In contrast, the other options do not accurately represent the effects of dialysis on the blood and its waste management functions.