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

Question: 1 / 400

What is the purpose of a dialyzer in hemodialysis?

To remove waste and excess fluids from the blood

The primary purpose of a dialyzer in hemodialysis is to remove waste products and excess fluids from the blood. The dialyzer acts as an artificial kidney, utilizing a semipermeable membrane that allows certain substances to pass through while retaining larger components like blood cells and proteins. As blood flows through the dialyzer, toxins, electrolytes, and fluid excess are filtered out and cleared from the bloodstream, which is crucial for maintaining the patient's internal balance and overall health when their kidneys are not functioning adequately. This process is essential for patients with chronic kidney disease or acute kidney injury, as it helps to prevent complications associated with the buildup of waste products in the body.

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To measure blood pressure

To perform kidney transplants

To administer medications during treatment

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