1
DAVITA RN Final Exam Complete
Questions & Verified Correct
Answers Plus Rationales Graded A+
2026
1. The primary purpose of hemodialysis is to:
A. Replace endocrine functions of kidney
B. Remove excess fluids and solutes
C. Cure chronic kidney disease
D. Improve appetite
Correct Answer>>B
Rationale: Hemodialysis filters blood to remove wastes and excess fluid.
2. Diffusion in dialysis refers to:
A. Fluid removal
B. Solute movement from high to low concentration
C. Solvent drag
D. Heat transfer
Correct Answer>>B
Rationale: Diffusion equalizes solute levels across membrane.
3. Ultrafiltration is best described as:
A. Blood flow rate
B. Fluid removal by pressure
C. Dialysate concentration
D. Potassium balance
Correct Answer>>B
Rationale: Fluid is removed by transmembrane pressure.
4. A high Kt/V value indicates:
A. Poor dialysis
B. Adequate dialysis
C. Low blood flow
D. High ultrafiltration
Correct Answer>>B
Rationale: Kt/V measures dialysis dose adequacy.
5. Dialysate is:
A. Patient’s blood
B. Sterile saline
C. A solution that removes waste
D. Antibiotic mixture
Correct Answer>>C
Rationale: Dialysate pulls solutes from blood.
,2
6. The ideal access for long-term dialysis is:
A. Peripheral IV
B. AV fistula
, 3
C. Central line
D. Venipuncture
Correct Answer>>B
Rationale: Fistula has highest patency and lowest infection.
7. Recirculation during dialysis means:
A. All blood is cleaned
B. Clean dialysate reused
C. Treated blood reenters dialyzer
D. Pump malfunction
Correct Answer>>C
Rationale: Recirculation lowers efficiency.
8. Heparin is used in dialysis to:
A. Control BP
B. Prevent clotting in circuit
C. Improve potassium removal
D. Increase ultrafiltration
Correct Answer>>B
Rationale: Anticoagulation prevents clot formation.
9. BUN stands for:
A. Blood Urea Nitrogen
B. Basic Urinalysis Nephron
C. Bilirubin United Norm
D. Blood Urea Number
Correct Answer>>A
Rationale: BUN reflects waste accumulation.
10. Dialyzer “membrane compromise” alarms signal:
A. Adequate flow
B. Loss of membrane integrity
C. Correct anticoagulation
D. Normal operation
Correct Answer>>B
Rationale: Membrane leaks risk blood/dialysate mixing.
11–20: Access & Vascular Complications
11. The most common cause of AV fistula failure is:
A. Infection
B. Stenosis
C. Bruising
D. Hematoma
Correct Answer>>B
Rationale: Stenosis reduces flow and patency.
DAVITA RN Final Exam Complete
Questions & Verified Correct
Answers Plus Rationales Graded A+
2026
1. The primary purpose of hemodialysis is to:
A. Replace endocrine functions of kidney
B. Remove excess fluids and solutes
C. Cure chronic kidney disease
D. Improve appetite
Correct Answer>>B
Rationale: Hemodialysis filters blood to remove wastes and excess fluid.
2. Diffusion in dialysis refers to:
A. Fluid removal
B. Solute movement from high to low concentration
C. Solvent drag
D. Heat transfer
Correct Answer>>B
Rationale: Diffusion equalizes solute levels across membrane.
3. Ultrafiltration is best described as:
A. Blood flow rate
B. Fluid removal by pressure
C. Dialysate concentration
D. Potassium balance
Correct Answer>>B
Rationale: Fluid is removed by transmembrane pressure.
4. A high Kt/V value indicates:
A. Poor dialysis
B. Adequate dialysis
C. Low blood flow
D. High ultrafiltration
Correct Answer>>B
Rationale: Kt/V measures dialysis dose adequacy.
5. Dialysate is:
A. Patient’s blood
B. Sterile saline
C. A solution that removes waste
D. Antibiotic mixture
Correct Answer>>C
Rationale: Dialysate pulls solutes from blood.
,2
6. The ideal access for long-term dialysis is:
A. Peripheral IV
B. AV fistula
, 3
C. Central line
D. Venipuncture
Correct Answer>>B
Rationale: Fistula has highest patency and lowest infection.
7. Recirculation during dialysis means:
A. All blood is cleaned
B. Clean dialysate reused
C. Treated blood reenters dialyzer
D. Pump malfunction
Correct Answer>>C
Rationale: Recirculation lowers efficiency.
8. Heparin is used in dialysis to:
A. Control BP
B. Prevent clotting in circuit
C. Improve potassium removal
D. Increase ultrafiltration
Correct Answer>>B
Rationale: Anticoagulation prevents clot formation.
9. BUN stands for:
A. Blood Urea Nitrogen
B. Basic Urinalysis Nephron
C. Bilirubin United Norm
D. Blood Urea Number
Correct Answer>>A
Rationale: BUN reflects waste accumulation.
10. Dialyzer “membrane compromise” alarms signal:
A. Adequate flow
B. Loss of membrane integrity
C. Correct anticoagulation
D. Normal operation
Correct Answer>>B
Rationale: Membrane leaks risk blood/dialysate mixing.
11–20: Access & Vascular Complications
11. The most common cause of AV fistula failure is:
A. Infection
B. Stenosis
C. Bruising
D. Hematoma
Correct Answer>>B
Rationale: Stenosis reduces flow and patency.
