CERTIFIED HEMODIALYSIS TECHNICIAN (CHT)
EXAMINATION QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
|INSTANT DOWLOAD PDF
1. BASIC PRINCIPLE OF HEMODIALYSIS
Which of the following best describes the primary mechanism
of solute removal in hemodialysis?
A. Active transport
B. Diffusion
C. Endocytosis
D. Osmosis only
Rationale: Hemodialysis primarily removes solutes based on
concentration gradients across a semipermeable membrane.
Correct Answer: B. Diffusion
2. VASCULAR ACCESS TYPE
Which vascular access is considered the gold standard for
long-term hemodialysis?
A. Central venous catheter
B. Arteriovenous fistula
C. Arteriovenous graft
D. Femoral catheter
,Rationale: AV fistulas have the lowest infection and thrombosis
rates and highest longevity.
Correct Answer: B. Arteriovenous fistula
3. HEPARIN PURPOSE
What is the primary purpose of heparin during dialysis?
A. Increase blood pressure
B. Prevent clotting in extracorporeal circuit
C. Increase ultrafiltration
D. Improve dialysate conductivity
Rationale: Heparin prevents clot formation in the dialysis
tubing and dialyzer.
Correct Answer: B. Prevent clotting in extracorporeal circuit
4. NORMAL DIALYSATE COMPOSITION
Which electrolyte is typically highest in dialysate solution?
A. Potassium
B. Calcium
C. Sodium
D. Magnesium
Rationale: Sodium concentration is carefully controlled and
usually the highest among electrolytes.
Correct Answer: C. Sodium
,5. SIGNS OF HYPOTENSION DURING DIALYSIS
Which symptom is most commonly associated with
intradialytic hypotension?
A. Bradycardia
B. Headache and dizziness
C. Hyperactivity
D. Increased urine output
Rationale: Rapid fluid removal can cause dizziness and
hypotension.
Correct Answer: B. Headache and dizziness
6. DIALYZER FUNCTION
The dialyzer membrane primarily allows passage of:
A. Blood cells only
B. Large proteins only
C. Small solutes and water
D. Platelets only
Rationale: The semipermeable membrane permits diffusion of
small molecules.
Correct Answer: C. Small solutes and water
7. UREMIA DEFINITION
Uremia is best defined as:
A. Excess glucose in blood
, B. Excess urea and waste products in blood
C. Low calcium levels
D. Excess oxygen in blood
Rationale: Uremia refers to accumulation of nitrogenous waste
in renal failure.
Correct Answer: B. Excess urea and waste products in blood
8. HEMODIALYSIS FREQUENCY
Standard hemodialysis is typically performed:
A. Once monthly
B. Once weekly
C. Three times per week
D. Daily for all patients
Rationale: Most chronic patients undergo dialysis 3 times
weekly.
Correct Answer: C. Three times per week
9. ARTERIAL PRESSURE IN DIALYSIS CIRCUIT
What does a highly negative arterial pressure reading
indicate?
A. Good blood flow
B. Needle or access obstruction
C. High blood pressure
D. Excess dialysate flow
EXAMINATION QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
|INSTANT DOWLOAD PDF
1. BASIC PRINCIPLE OF HEMODIALYSIS
Which of the following best describes the primary mechanism
of solute removal in hemodialysis?
A. Active transport
B. Diffusion
C. Endocytosis
D. Osmosis only
Rationale: Hemodialysis primarily removes solutes based on
concentration gradients across a semipermeable membrane.
Correct Answer: B. Diffusion
2. VASCULAR ACCESS TYPE
Which vascular access is considered the gold standard for
long-term hemodialysis?
A. Central venous catheter
B. Arteriovenous fistula
C. Arteriovenous graft
D. Femoral catheter
,Rationale: AV fistulas have the lowest infection and thrombosis
rates and highest longevity.
Correct Answer: B. Arteriovenous fistula
3. HEPARIN PURPOSE
What is the primary purpose of heparin during dialysis?
A. Increase blood pressure
B. Prevent clotting in extracorporeal circuit
C. Increase ultrafiltration
D. Improve dialysate conductivity
Rationale: Heparin prevents clot formation in the dialysis
tubing and dialyzer.
Correct Answer: B. Prevent clotting in extracorporeal circuit
4. NORMAL DIALYSATE COMPOSITION
Which electrolyte is typically highest in dialysate solution?
A. Potassium
B. Calcium
C. Sodium
D. Magnesium
Rationale: Sodium concentration is carefully controlled and
usually the highest among electrolytes.
Correct Answer: C. Sodium
,5. SIGNS OF HYPOTENSION DURING DIALYSIS
Which symptom is most commonly associated with
intradialytic hypotension?
A. Bradycardia
B. Headache and dizziness
C. Hyperactivity
D. Increased urine output
Rationale: Rapid fluid removal can cause dizziness and
hypotension.
Correct Answer: B. Headache and dizziness
6. DIALYZER FUNCTION
The dialyzer membrane primarily allows passage of:
A. Blood cells only
B. Large proteins only
C. Small solutes and water
D. Platelets only
Rationale: The semipermeable membrane permits diffusion of
small molecules.
Correct Answer: C. Small solutes and water
7. UREMIA DEFINITION
Uremia is best defined as:
A. Excess glucose in blood
, B. Excess urea and waste products in blood
C. Low calcium levels
D. Excess oxygen in blood
Rationale: Uremia refers to accumulation of nitrogenous waste
in renal failure.
Correct Answer: B. Excess urea and waste products in blood
8. HEMODIALYSIS FREQUENCY
Standard hemodialysis is typically performed:
A. Once monthly
B. Once weekly
C. Three times per week
D. Daily for all patients
Rationale: Most chronic patients undergo dialysis 3 times
weekly.
Correct Answer: C. Three times per week
9. ARTERIAL PRESSURE IN DIALYSIS CIRCUIT
What does a highly negative arterial pressure reading
indicate?
A. Good blood flow
B. Needle or access obstruction
C. High blood pressure
D. Excess dialysate flow
