Arizona Dialysis Technician Certification
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. What is the primary purpose of hemodialysis in patients with
end-stage renal disease?
A. To increase erythropoietin production
B. To remove accumulated waste products and excess fluid from the
blood
C. To improve pancreatic function
D. To enhance liver detoxification
The primary purpose of hemodialysis is to replicate the filtering
function of the kidneys by removing urea, creatinine, and excess fluid
from the bloodstream in patients whose kidneys can no longer
perform these functions.
2. Which vascular access type is generally considered the most durable
and preferred for long-term hemodialysis?
A. Peripheral intravenous catheter
B. Arteriovenous fistula
C. Central venous catheter
D. Subcutaneous port
An arteriovenous fistula is created surgically by connecting an artery
and a vein, providing a high-flow access that is less prone to infection
and clotting and is preferred for long-term hemodialysis.
,3. During dialysis treatment, a significant drop in the patient’s blood
pressure is most likely caused by:
A. Hypervolemia
B. Metabolic alkalosis
C. Excessive ultrafiltration rate
D. Increased dialysate calcium
Excessive ultrafiltration removes fluid too rapidly from the
bloodstream, leading to intravascular volume depletion and a drop
in blood pressure.
4. What is the function of the dialyzer membrane in the dialysis
machine?
A. To warm the blood
B. To add electrolytes to the blood
C. To allow selective diffusion of solutes and fluids
D. To oxygenate the blood
The dialyzer membrane acts as a semi-permeable barrier, allowing
waste solutes and water to move from the blood into the dialysate
while retaining essential blood components.
5. Which of the following is a common symptom of disequilibrium
syndrome during or after initial dialysis treatments?
A. Hyperthermia
B. Headache and nausea
C. Hypertension
D. Increased urine output
Dialysis disequilibrium syndrome occurs when rapid removal of
solutes causes cerebral edema, resulting in symptoms such as
headache, nausea, and confusion.
6. Why is heparin administered during dialysis?
A. To raise blood glucose levels
B. To prevent clotting within the extracorporeal circuit
C. To enhance ultrafiltration
D. To increase potassium removal
Heparin is an anticoagulant used during hemodialysis to prevent
blood from clotting in the tubing and dialyzer, ensuring
uninterrupted blood flow.
, 7. A patient’s pre-dialysis weight is important because it:
A. Determines the dialysate flow rate
B. Measures cardiac output
C. Helps calculate the target post-dialysis weight
D. Evaluates respiratory function
Pre-dialysis weight establishes a baseline to determine how much
fluid should be removed during treatment to reach the patient’s
target or dry weight.
8. What is the most appropriate action if the dialysate conductivity
alarm sounds?
A. Increase blood flow rate
B. Stop treatment and assess dialysate composition
C. Administer IV fluids
D. Lower the patient’s temperature
A conductivity alarm indicates improper electrolyte concentration in
the dialysate; treatment should be stopped and the dialysate
checked before continuing.
9. Which of the following infection control practices is essential in the
dialysis unit?
A. Reusing single-use items
B. Wearing sterile gowns for all procedures
C. Proper hand hygiene before and after patient contact
D. Disinfecting only at the end of the day
Hand hygiene is fundamental in preventing the transmission of
pathogens between patients and staff in the dialysis setting.
10. A patient complains of cramping during ultrafiltration. The
dialysis technician should first:
A. Increase the ultrafiltration rate
B. Offer the patient oral fluids if permitted
C. Decrease dialysate sodium
D. Discontinue dialysis
Muscle cramps during dialysis are often related to rapid fluid
removal; giving a small amount of permitted fluid and adjusting fluid
removal can help relieve symptoms.
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. What is the primary purpose of hemodialysis in patients with
end-stage renal disease?
A. To increase erythropoietin production
B. To remove accumulated waste products and excess fluid from the
blood
C. To improve pancreatic function
D. To enhance liver detoxification
The primary purpose of hemodialysis is to replicate the filtering
function of the kidneys by removing urea, creatinine, and excess fluid
from the bloodstream in patients whose kidneys can no longer
perform these functions.
2. Which vascular access type is generally considered the most durable
and preferred for long-term hemodialysis?
A. Peripheral intravenous catheter
B. Arteriovenous fistula
C. Central venous catheter
D. Subcutaneous port
An arteriovenous fistula is created surgically by connecting an artery
and a vein, providing a high-flow access that is less prone to infection
and clotting and is preferred for long-term hemodialysis.
,3. During dialysis treatment, a significant drop in the patient’s blood
pressure is most likely caused by:
A. Hypervolemia
B. Metabolic alkalosis
C. Excessive ultrafiltration rate
D. Increased dialysate calcium
Excessive ultrafiltration removes fluid too rapidly from the
bloodstream, leading to intravascular volume depletion and a drop
in blood pressure.
4. What is the function of the dialyzer membrane in the dialysis
machine?
A. To warm the blood
B. To add electrolytes to the blood
C. To allow selective diffusion of solutes and fluids
D. To oxygenate the blood
The dialyzer membrane acts as a semi-permeable barrier, allowing
waste solutes and water to move from the blood into the dialysate
while retaining essential blood components.
5. Which of the following is a common symptom of disequilibrium
syndrome during or after initial dialysis treatments?
A. Hyperthermia
B. Headache and nausea
C. Hypertension
D. Increased urine output
Dialysis disequilibrium syndrome occurs when rapid removal of
solutes causes cerebral edema, resulting in symptoms such as
headache, nausea, and confusion.
6. Why is heparin administered during dialysis?
A. To raise blood glucose levels
B. To prevent clotting within the extracorporeal circuit
C. To enhance ultrafiltration
D. To increase potassium removal
Heparin is an anticoagulant used during hemodialysis to prevent
blood from clotting in the tubing and dialyzer, ensuring
uninterrupted blood flow.
, 7. A patient’s pre-dialysis weight is important because it:
A. Determines the dialysate flow rate
B. Measures cardiac output
C. Helps calculate the target post-dialysis weight
D. Evaluates respiratory function
Pre-dialysis weight establishes a baseline to determine how much
fluid should be removed during treatment to reach the patient’s
target or dry weight.
8. What is the most appropriate action if the dialysate conductivity
alarm sounds?
A. Increase blood flow rate
B. Stop treatment and assess dialysate composition
C. Administer IV fluids
D. Lower the patient’s temperature
A conductivity alarm indicates improper electrolyte concentration in
the dialysate; treatment should be stopped and the dialysate
checked before continuing.
9. Which of the following infection control practices is essential in the
dialysis unit?
A. Reusing single-use items
B. Wearing sterile gowns for all procedures
C. Proper hand hygiene before and after patient contact
D. Disinfecting only at the end of the day
Hand hygiene is fundamental in preventing the transmission of
pathogens between patients and staff in the dialysis setting.
10. A patient complains of cramping during ultrafiltration. The
dialysis technician should first:
A. Increase the ultrafiltration rate
B. Offer the patient oral fluids if permitted
C. Decrease dialysate sodium
D. Discontinue dialysis
Muscle cramps during dialysis are often related to rapid fluid
removal; giving a small amount of permitted fluid and adjusting fluid
removal can help relieve symptoms.
