CCHT Practice Exam Questions And

Certified Clinical Hemodialysis Technician (CCHT) Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

(Covers: Principles of Dialysis, Hemodialysis Procedures, Equipment, Water

Treatment, Infection Control, Patient Care, and Professional Practice)

• What is the primary function of hemodialysis?
• To increase urine production
• To remove waste products and excess fluid from the blood
• To stimulate erythropoietin production
• To filter bile salts from the liver

Rationale: Hemodialysis mimics kidney function by filtering waste products

and removing excess fluids from the bloodstream.

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• Which of the following best describes uremia?
• A buildup of bile in the bloodstream
• A buildup of waste products in the blood due to kidney failure
• Low red blood cell count
• Excess fluid retention in the lungs

Rationale: Uremia results from inadequate clearance of waste products by

the kidneys.

• What is the primary purpose of the dialyzer?
• To pump blood
• To monitor pressure
• To act as an artificial kidney to filter waste
• To store dialysate

Rationale: The dialyzer contains semi-permeable membranes that allow

diffusion of solutes and fluid removal.

4. The dialysate contains electrolytes designed to:

• Replace all patient blood electrolytes
• Maintain normal serum electrolyte balance during dialysis
• Reduce serum glucose levels
• Promote urine output

Rationale: Dialysate composition is adjusted to help restore and maintain

proper electrolyte levels. 2 / 4

• What type of membrane allows small molecules to pass but not large

ones?

• Impermeable membrane
• Semi-permeable membrane
• Osmotic membrane
• Diffusion barrier

Rationale: The semi-permeable membrane allows selective transfer of

solutes and fluids.

6. The main force behind diffusion during dialysis is:

• Gravity
• Concentration gradient
• Blood pressure
• Osmosis

Rationale: Diffusion occurs as solutes move from an area of higher to lower

concentration.

• Which of the following determines ultrafiltration during dialysis?
• Solute concentration difference
• Dialysate composition
• Transmembrane pressure 3 / 4

• Membrane thickness

Rationale: Ultrafiltration is controlled by transmembrane pressure

differences across the dialyzer membrane.

8. The normal blood flow rate during hemodialysis ranges between:

• 50–100 mL/min
• 300–500 mL/min
• 600–900 mL/min
• 1000–1500 mL/min

Rationale: Optimal clearance requires a blood flow rate typically between

300 and 500 mL/min.

9. The dialysate flow rate is commonly set at:

• 50 mL/min
• 500 mL/min
• 1500 mL/min
• 2500 mL/min

Rationale: A dialysate flow rate of around 500 mL/min optimizes solute

exchange efficiency.

10. A patient’s dry weight refers to:

• Their weight before starting dialysis
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