DaVita PCT Final Exam Actual Exam 2026/2027 –
Comprehensive Patient Care Technician Assessment with
Detailed Rationales | 100% Verified | Pass Guaranteed – A+
Graded
Section 1: Dialysis Principles & Renal Physiology (12 questions)
Q1: A patient asks the PCT why they need dialysis. The PCT correctly explains that
dialysis primarily replaces the kidney's function through three mechanisms. The
movement of solutes from an area of higher concentration to lower concentration
across a semipermeable membrane is called:
A. Ultrafiltration
B. Diffusion [CORRECT]
C. Convection
D. Osmosis
Correct Answer: B
Rationale: Diffusion is the movement of solutes (waste products, electrolytes) from an
area of higher concentration to lower concentration across the semipermeable dialyzer
membrane; this is the primary mechanism for clearing urea, creatinine, and other small
molecular weight solutes during hemodialysis, per DaVita dialysis principles and renal
physiology training.
Q2: A patient asks the PCT how excess fluid is removed during dialysis. The PCT
correctly explains that ultrafiltration is:
A. The movement of solutes from high to low concentration
,B. Controlled fluid removal by manipulation of hydrostatic pressure across the dialyzer
membrane [CORRECT]
C. The movement of fluid from lower to higher solute concentration
D. The dragging of solutes with fluid movement
Correct Answer: B
Rationale: Ultrafiltration is the process of controlled fluid removal during hemodialysis
achieved by creating a hydrostatic pressure gradient (transmembrane pressure) across
the dialyzer membrane; this pressure drives plasma water and dissolved solutes from
the blood compartment into the dialysate compartment, per DaVita ultrafiltration
principles.
Q3: A patient on dialysis has a hemoglobin of 8.2 g/dL and reports fatigue and
shortness of breath. The PCT recognizes that the primary cause of anemia in dialysis
patients is:
A. Excessive iron supplementation
B. Decreased erythropoietin production by the damaged kidneys [CORRECT]
C. Overhydration
D. Excessive dialysis frequency
Correct Answer: B
Rationale: Erythropoietin (EPO) is a hormone produced by peritubular cells in the kidney
that stimulates red blood cell production in bone marrow; in chronic kidney disease,
EPO production declines significantly, resulting in anemia of chronic kidney disease;
dialysis replaces only about 15% of normal kidney function and does not restore EPO
production, per DaVita renal physiology and anemia management protocols.
,Q4: A patient asks the PCT why they need to take phosphate binders with meals. The
PCT correctly explains that:
A. Phosphate binders replace kidney function completely
B. Damaged kidneys cannot adequately excrete phosphate, leading to CKD-mineral and
bone disorder (CKD-MBD); phosphate binders bind dietary phosphate in the gut to
prevent absorption [CORRECT]
C. Phosphate binders increase phosphate absorption
D. Phosphate binders are only needed on dialysis days
Correct Answer: B
Rationale: CKD-MBD is caused by the kidney's inability to excrete phosphate, activate
vitamin D, and regulate parathyroid hormone; phosphate binders (calcium acetate,
sevelamer, lanthanum) are taken with meals to bind dietary phosphate in the
gastrointestinal tract, preventing absorption and reducing serum phosphate levels;
vitamin D analogs and cinacalcet may also be used, per DaVita CKD-MBD management
protocols.
Q5: A patient with chronic kidney disease asks the PCT about the kidney's endocrine
functions. The PCT correctly identifies all of the following as endocrine functions of the
kidney EXCEPT:
A. Renin secretion for blood pressure regulation
B. Erythropoietin secretion for red blood cell production
C. Vitamin D activation (conversion of 25-hydroxyvitamin D to 1,25-dihydroxyvitamin D)
D. Insulin production for glucose regulation [CORRECT]
Correct Answer: D
Rationale: The kidneys perform critical endocrine functions including renin secretion
(RAAS system, blood pressure regulation), erythropoietin secretion (red blood cell
production), and activation of vitamin D (calcitriol synthesis for calcium/phosphate
, homeostasis); insulin is produced by the pancreatic beta cells, not the kidneys, per
DaVita renal physiology training.
Q6: A patient on dialysis develops pericarditis. The PCT recognizes that the appropriate
treatment includes:
A. Discontinuing all dialysis treatments
B. More frequent dialysis treatments and heparin restriction to reduce inflammation and
prevent cardiac tamponade [CORRECT]
C. Increasing fluid intake between treatments
D. Administering large doses of heparin
Correct Answer: B
Rationale: Uremic pericarditis is caused by inadequate clearance of uremic toxins;
treatment includes more frequent or intensive dialysis to improve uremic clearance,
restriction or avoidance of heparin (which can cause hemorrhagic pericardial effusion
and tamponade), and monitoring for signs of cardiac tamponade; severe cases may
require pericardiocentesis, per DaVita pericarditis management protocols.
Q7: A patient asks the PCT what percentage of normal kidney function dialysis replaces.
The PCT correctly responds:
A. 100%
B. Approximately 15% [CORRECT]
C. 50%
D. 75%
Correct Answer: B
Rationale: Hemodialysis replaces approximately 10-15% of normal kidney function; this
is why dietary and fluid restrictions, medication management, and adherence to
Comprehensive Patient Care Technician Assessment with
Detailed Rationales | 100% Verified | Pass Guaranteed – A+
Graded
Section 1: Dialysis Principles & Renal Physiology (12 questions)
Q1: A patient asks the PCT why they need dialysis. The PCT correctly explains that
dialysis primarily replaces the kidney's function through three mechanisms. The
movement of solutes from an area of higher concentration to lower concentration
across a semipermeable membrane is called:
A. Ultrafiltration
B. Diffusion [CORRECT]
C. Convection
D. Osmosis
Correct Answer: B
Rationale: Diffusion is the movement of solutes (waste products, electrolytes) from an
area of higher concentration to lower concentration across the semipermeable dialyzer
membrane; this is the primary mechanism for clearing urea, creatinine, and other small
molecular weight solutes during hemodialysis, per DaVita dialysis principles and renal
physiology training.
Q2: A patient asks the PCT how excess fluid is removed during dialysis. The PCT
correctly explains that ultrafiltration is:
A. The movement of solutes from high to low concentration
,B. Controlled fluid removal by manipulation of hydrostatic pressure across the dialyzer
membrane [CORRECT]
C. The movement of fluid from lower to higher solute concentration
D. The dragging of solutes with fluid movement
Correct Answer: B
Rationale: Ultrafiltration is the process of controlled fluid removal during hemodialysis
achieved by creating a hydrostatic pressure gradient (transmembrane pressure) across
the dialyzer membrane; this pressure drives plasma water and dissolved solutes from
the blood compartment into the dialysate compartment, per DaVita ultrafiltration
principles.
Q3: A patient on dialysis has a hemoglobin of 8.2 g/dL and reports fatigue and
shortness of breath. The PCT recognizes that the primary cause of anemia in dialysis
patients is:
A. Excessive iron supplementation
B. Decreased erythropoietin production by the damaged kidneys [CORRECT]
C. Overhydration
D. Excessive dialysis frequency
Correct Answer: B
Rationale: Erythropoietin (EPO) is a hormone produced by peritubular cells in the kidney
that stimulates red blood cell production in bone marrow; in chronic kidney disease,
EPO production declines significantly, resulting in anemia of chronic kidney disease;
dialysis replaces only about 15% of normal kidney function and does not restore EPO
production, per DaVita renal physiology and anemia management protocols.
,Q4: A patient asks the PCT why they need to take phosphate binders with meals. The
PCT correctly explains that:
A. Phosphate binders replace kidney function completely
B. Damaged kidneys cannot adequately excrete phosphate, leading to CKD-mineral and
bone disorder (CKD-MBD); phosphate binders bind dietary phosphate in the gut to
prevent absorption [CORRECT]
C. Phosphate binders increase phosphate absorption
D. Phosphate binders are only needed on dialysis days
Correct Answer: B
Rationale: CKD-MBD is caused by the kidney's inability to excrete phosphate, activate
vitamin D, and regulate parathyroid hormone; phosphate binders (calcium acetate,
sevelamer, lanthanum) are taken with meals to bind dietary phosphate in the
gastrointestinal tract, preventing absorption and reducing serum phosphate levels;
vitamin D analogs and cinacalcet may also be used, per DaVita CKD-MBD management
protocols.
Q5: A patient with chronic kidney disease asks the PCT about the kidney's endocrine
functions. The PCT correctly identifies all of the following as endocrine functions of the
kidney EXCEPT:
A. Renin secretion for blood pressure regulation
B. Erythropoietin secretion for red blood cell production
C. Vitamin D activation (conversion of 25-hydroxyvitamin D to 1,25-dihydroxyvitamin D)
D. Insulin production for glucose regulation [CORRECT]
Correct Answer: D
Rationale: The kidneys perform critical endocrine functions including renin secretion
(RAAS system, blood pressure regulation), erythropoietin secretion (red blood cell
production), and activation of vitamin D (calcitriol synthesis for calcium/phosphate
, homeostasis); insulin is produced by the pancreatic beta cells, not the kidneys, per
DaVita renal physiology training.
Q6: A patient on dialysis develops pericarditis. The PCT recognizes that the appropriate
treatment includes:
A. Discontinuing all dialysis treatments
B. More frequent dialysis treatments and heparin restriction to reduce inflammation and
prevent cardiac tamponade [CORRECT]
C. Increasing fluid intake between treatments
D. Administering large doses of heparin
Correct Answer: B
Rationale: Uremic pericarditis is caused by inadequate clearance of uremic toxins;
treatment includes more frequent or intensive dialysis to improve uremic clearance,
restriction or avoidance of heparin (which can cause hemorrhagic pericardial effusion
and tamponade), and monitoring for signs of cardiac tamponade; severe cases may
require pericardiocentesis, per DaVita pericarditis management protocols.
Q7: A patient asks the PCT what percentage of normal kidney function dialysis replaces.
The PCT correctly responds:
A. 100%
B. Approximately 15% [CORRECT]
C. 50%
D. 75%
Correct Answer: B
Rationale: Hemodialysis replaces approximately 10-15% of normal kidney function; this
is why dietary and fluid restrictions, medication management, and adherence to
