ILLINOIS DIALYSIS TECHNICIAN CERTIFICATION EXAM 2026 – PRACTICE QUESTIONS WITH VERIFIED ANSWERS, RATIONALES, AND COMPLETE HEMODIALYSIS CERTIFICATION STUDY GUIDE A+ ALREADY GRADED

ILLINOIS DIALYSIS TECHNICIAN
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CERTIFICATION EXAM, PRACTICE QUESTIO dx dx dx




NS WITH CORRECT ANSWERS (VERIFIED AN
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SWERS) PLUS RATIONALES 2026 Q&A | INS
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TANT DOWNLOAD PDF.
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1. The primary function of a hemodialysis machine is to:
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A. Remove blood clots dx dx



B. Filter waste products from the blood
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C. Increase blood pressure dx dx



D. Supply oxygen to blood dx dx dx



Rationale: Hemodialysis removes toxins and excess fluids when the k
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idneys are unable to function properly.
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2. What is the purpose of ultrafiltration in dialysis?
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A. Measure blood pressure dx dx



B. Remove excess fluid from the blood
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C. Administer medication dx



D. Prevent infection dx



Rationale: Ultrafiltration is the process of fluid removal across a sem
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ipermeable membrane. dx




3. The most common vascular access for long-term hemodialysis is:
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A. Central venous catheter dx dx



B. Arteriovenous fistula dx



C. Peripheral IV line dx dx



D. Subcutaneous port dx

, Rationale: AV fistulas have the lowest risk of infection and thro
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mbosis and are preferred for chronic dialysis.
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4. Which electrolyte imbalance is a major concern during dialysis?
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A. Hypercalcemia
B. Hyperkalemia
C. Hyponatremia
D. Hypophosphatemia
Rationale: High potassium levels can cause life-
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threatening cardiac arrhythmias. dx dx




5. Dialysate composition is important because it:
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A. Cleans the dialyzer dx dx



B. Helps correct electrolyte imbalances
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C. Warms the patient dx dx



D. Sterilizes the blood dx dx



Rationale: Dialysate contains electrolytes and bicarbonate to bal
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ance blood chemistry.
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6. The primary function of the dialyzer is:
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A. Administer medications dx



B. Pump blood dx



C. Act as an artificial kidney to filter waste
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D. Monitor vital signs dx dx



Rationale: The dialyzer contains a semipermeable membrane that re
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moves waste products.
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7. Heparin is commonly used during dialysis to:
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A. Increase blood pressure dx dx



B. Promote urine output dx dx



C. Prevent clotting in the extracorporeal circuit
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D. Reduce inflammation dx

, Rationale: Anticoagulation prevents clot formation in the dialysis
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circuit.
8. Which of the following is a potential complication of AV fistulas?
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A. Infection only dx



B. Thrombosis or stenosis dx dx



C. Hyperkalemia
D. Hypotension
Rationale: AV fistulas can develop clotting or narrowing, reducing
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xblood flow. dx




9. Dialysis patients often require phosphate binders because:
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A. Kidneys cannot excrete phosphate effectively
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B. They need more calcium
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C. To prevent anemia
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D. To lower potassium
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Rationale: Phosphate retention is common in CKD, leading to bone a
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nd cardiovascular issues.
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10. A patient shows muscle cramps and hypotension durin
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g dialysis. This is likely due to:
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A. Hypervolemia
B. Rapid fluid removal dx dx



C. Electrolyte overdose dx



D. Infection
Rationale: Rapid ultrafiltration can cause intradialytic hypotension a
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nd cramping.
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11. Blood flow rate during dialysis is typically:
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A. 50–100 mL/min dx



B. 200–400 mL/min dx



C. 300–500 mL/min dx



D. 600–800 mL/min dx