LANIF · 4–1 SELUDOM
DaVita Inc.
+ ★
DaVita University — PCT Training Modules 1–4
D
EST. 1999
BRINGING QUALITY TO LIFE
DaVita PCT Modules 1–4 — Final Examination
D I A LYS I S S C I E N C E · VA S CU L A R ACC E SS · I N F E CT I O N CO N T R O L · W AT E R T R E AT M E N T ·
PAT I E N T S A F E TY
INSTITUTION DaVita Inc. / DaVita University PROGRAM Patient Care Technician (PCT)
Training — Modules 1–4
ACADEMIC YEAR EXAM TITLE Modules 1–4 Comprehensive Final
Examination
TOTAL QUESTIONS 115 Questions COURSE TITLE Hemodialysis Patient Care
Technician Training
FORMAT Multiple Choice — Select the HQ Denver, Colorado
Single Best Answer
EXAMINATION INSTRUCTIONS
▸ Select the single best answer for each question.
▸ Content covers Modules 1–4: Dialysis Science, Vascular Access, Infection Control, Water Treatment, and
Patient Safety.
▸ Correct answers and clinical rationales appear below each question for certification review.
▸ All policies and values reflect current DaVita P&Ps and CMS Conditions for Coverage.
, SECTION I — DIALYSIS SCIENCE & KIDNEY FUNCTION
Questions 1 – 30
(MODULE 1)
1. Ultrafiltration is defined as:
A. The movement of solutes from an area of higher concentration to lower concentration.
B. Controlled fluid removal by manipulation of hydrostatic pressure.
C. The movement of fluid from an area of low concentration to high concentration.
D. The diffusion of electrolytes across a semipermeable membrane.
CORRECT ANSWER B — Controlled fluid removal by manipulation of hydrostatic pressure.
RATIONALE Ultrafiltration (UF) is the process of removing excess fluid from the patient's
blood during dialysis using hydrostatic pressure. The positive pressure in the
blood compartment pushes water across the dialyzer membrane into the
dialysate compartment. This is distinct from diffusion (solute movement down a
concentration gradient) and osmosis (fluid movement from low to high solute
concentration). The UF rate is controlled by the dialysis machine and must not
exceed 13 mL/kg/hr to prevent hypotension and organ stunning.
,2. If a patient with acute kidney injury (AKI) dialyzes in the outpatient facility, why is it
important to monitor blood pressure and weight closely?
A. AKI patients do not require any special monitoring compared to CKD patients.
B. Hypovolemia and hypotensive episodes can cause renal ischemia and can further
damage the kidneys.
C. Weight monitoring is only for calculating medication doses.
D. Blood pressure changes are irrelevant in AKI patients.
CORRECT ANSWER B — Hypovolemia and hypotensive episodes can cause renal ischemia and
can further damage the kidneys.
RATIONALE AKI patients are particularly vulnerable to hemodynamic instability. The
underlying cause of prerenal kidney failure is hypovolemia or poor perfusion.
Aggressive fluid removal causing hypotension further compromises already-
damaged kidneys, potentially converting reversible AKI to irreversible damage.
The PCT must carefully monitor BP and weight, report abnormalities to the RN,
and understand that AKI patients may need a slightly higher target weight to
preserve residual renal function during recovery.
3. Your role in anemia management as a PCT includes:
A. Prescribing erythropoietin-stimulating agents.
B. Rinsing back as much of the patient's blood as you can at the termination of each
treatment.
C. Adjusting the patient's iron dosage.
D. Ordering blood transfusions.
CORRECT ANSWER B — Rinsing back as much of the patient's blood as you can at the
termination of each treatment.
RATIONALE The PCT directly contributes to anemia management by maximizing blood return
at the end of each treatment. Every milliliter of blood left in the dialyzer or blood
lines represents blood loss that contributes to the chronic anemia of dialysis
patients. Proper rinseback technique — ensuring complete return of blood while
avoiding excess saline administration — is a critical PCT skill. Other anemia
management components (ESA dosing, iron management) are outside the PCT
scope of practice and are managed by the RN and nephrologist.
, 4. During dialysis, the movement of bicarbonate from the dialysate into the blood:
A. Increases blood acidity.
B. Helps normalize body pH.
C. Has no effect on pH.
D. Only affects potassium levels.
CORRECT ANSWER B — Helps normalize body pH.
RATIONALE Dialysis patients typically have metabolic acidosis due to the kidneys' inability to
excrete hydrogen ions and reabsorb bicarbonate. Bicarbonate in the dialysate
diffuses into the patient's blood, acting as a buffer to neutralize excess acid and
normalize body pH. This is one of the essential excretory functions that dialysis
replaces. The bicarbonate concentrate is mixed with acid concentrate and treated
water to form the final dialysate. The safe dialysate pH range is between 6.9 and
7.6.
5. The transport mechanism when particles move from an area of higher solute
concentration to an area of lower solute concentration is called:
A. Ultrafiltration
B. Convection
C. Diffusion
D. Osmosis
CORRECT ANSWER C — Diffusion
RATIONALE Diffusion is the passive movement of solutes (particles) from an area of higher
concentration to an area of lower concentration — down the concentration
gradient. In dialysis, this is the primary mechanism for removing waste products
(urea, creatinine) and excess electrolytes from the blood into the dialysate.
Countercurrent flow maximizes the concentration gradient. Convection is solute
movement dragged with fluid across the membrane. Ultrafiltration is fluid
removal by pressure. Osmosis is fluid movement from low to high solute
concentration.
DaVita Inc.
+ ★
DaVita University — PCT Training Modules 1–4
D
EST. 1999
BRINGING QUALITY TO LIFE
DaVita PCT Modules 1–4 — Final Examination
D I A LYS I S S C I E N C E · VA S CU L A R ACC E SS · I N F E CT I O N CO N T R O L · W AT E R T R E AT M E N T ·
PAT I E N T S A F E TY
INSTITUTION DaVita Inc. / DaVita University PROGRAM Patient Care Technician (PCT)
Training — Modules 1–4
ACADEMIC YEAR EXAM TITLE Modules 1–4 Comprehensive Final
Examination
TOTAL QUESTIONS 115 Questions COURSE TITLE Hemodialysis Patient Care
Technician Training
FORMAT Multiple Choice — Select the HQ Denver, Colorado
Single Best Answer
EXAMINATION INSTRUCTIONS
▸ Select the single best answer for each question.
▸ Content covers Modules 1–4: Dialysis Science, Vascular Access, Infection Control, Water Treatment, and
Patient Safety.
▸ Correct answers and clinical rationales appear below each question for certification review.
▸ All policies and values reflect current DaVita P&Ps and CMS Conditions for Coverage.
, SECTION I — DIALYSIS SCIENCE & KIDNEY FUNCTION
Questions 1 – 30
(MODULE 1)
1. Ultrafiltration is defined as:
A. The movement of solutes from an area of higher concentration to lower concentration.
B. Controlled fluid removal by manipulation of hydrostatic pressure.
C. The movement of fluid from an area of low concentration to high concentration.
D. The diffusion of electrolytes across a semipermeable membrane.
CORRECT ANSWER B — Controlled fluid removal by manipulation of hydrostatic pressure.
RATIONALE Ultrafiltration (UF) is the process of removing excess fluid from the patient's
blood during dialysis using hydrostatic pressure. The positive pressure in the
blood compartment pushes water across the dialyzer membrane into the
dialysate compartment. This is distinct from diffusion (solute movement down a
concentration gradient) and osmosis (fluid movement from low to high solute
concentration). The UF rate is controlled by the dialysis machine and must not
exceed 13 mL/kg/hr to prevent hypotension and organ stunning.
,2. If a patient with acute kidney injury (AKI) dialyzes in the outpatient facility, why is it
important to monitor blood pressure and weight closely?
A. AKI patients do not require any special monitoring compared to CKD patients.
B. Hypovolemia and hypotensive episodes can cause renal ischemia and can further
damage the kidneys.
C. Weight monitoring is only for calculating medication doses.
D. Blood pressure changes are irrelevant in AKI patients.
CORRECT ANSWER B — Hypovolemia and hypotensive episodes can cause renal ischemia and
can further damage the kidneys.
RATIONALE AKI patients are particularly vulnerable to hemodynamic instability. The
underlying cause of prerenal kidney failure is hypovolemia or poor perfusion.
Aggressive fluid removal causing hypotension further compromises already-
damaged kidneys, potentially converting reversible AKI to irreversible damage.
The PCT must carefully monitor BP and weight, report abnormalities to the RN,
and understand that AKI patients may need a slightly higher target weight to
preserve residual renal function during recovery.
3. Your role in anemia management as a PCT includes:
A. Prescribing erythropoietin-stimulating agents.
B. Rinsing back as much of the patient's blood as you can at the termination of each
treatment.
C. Adjusting the patient's iron dosage.
D. Ordering blood transfusions.
CORRECT ANSWER B — Rinsing back as much of the patient's blood as you can at the
termination of each treatment.
RATIONALE The PCT directly contributes to anemia management by maximizing blood return
at the end of each treatment. Every milliliter of blood left in the dialyzer or blood
lines represents blood loss that contributes to the chronic anemia of dialysis
patients. Proper rinseback technique — ensuring complete return of blood while
avoiding excess saline administration — is a critical PCT skill. Other anemia
management components (ESA dosing, iron management) are outside the PCT
scope of practice and are managed by the RN and nephrologist.
, 4. During dialysis, the movement of bicarbonate from the dialysate into the blood:
A. Increases blood acidity.
B. Helps normalize body pH.
C. Has no effect on pH.
D. Only affects potassium levels.
CORRECT ANSWER B — Helps normalize body pH.
RATIONALE Dialysis patients typically have metabolic acidosis due to the kidneys' inability to
excrete hydrogen ions and reabsorb bicarbonate. Bicarbonate in the dialysate
diffuses into the patient's blood, acting as a buffer to neutralize excess acid and
normalize body pH. This is one of the essential excretory functions that dialysis
replaces. The bicarbonate concentrate is mixed with acid concentrate and treated
water to form the final dialysate. The safe dialysate pH range is between 6.9 and
7.6.
5. The transport mechanism when particles move from an area of higher solute
concentration to an area of lower solute concentration is called:
A. Ultrafiltration
B. Convection
C. Diffusion
D. Osmosis
CORRECT ANSWER C — Diffusion
RATIONALE Diffusion is the passive movement of solutes (particles) from an area of higher
concentration to an area of lower concentration — down the concentration
gradient. In dialysis, this is the primary mechanism for removing waste products
(urea, creatinine) and excess electrolytes from the blood into the dialysate.
Countercurrent flow maximizes the concentration gradient. Convection is solute
movement dragged with fluid across the membrane. Ultrafiltration is fluid
removal by pressure. Osmosis is fluid movement from low to high solute
concentration.
