DAVITA PCT FINAL EXAM | DAVITA PATIENT CARE
TECHNICIAN | ALL QUESTIONS AND ANSWERS 2026/2027 |
VERIFIED ANSWERS PLUS RATIONALES | GRADED Q&A
COMPREHENSIVE STUDY GUIDE | VERIFIED LATEST 2027
1. A patient care technician (PCT) is preparing the hemodialysis machine for a patient's
treatment. What is the primary purpose of conducting an automated dialysate conductivity
and pH test prior to initiating therapy?
A. To verify that the dialyzer blood lines are free of air bubbles
B. To ensure the dialysate composition is safe and prevents hemolysis or crenation
C. To calculate the patient's target ultrafiltration rate for the treatment session
D. To confirm that the blood pump speeds match the physician's prescription
Rationale: Dialysate conductivity measures the concentration of total dissolved solids in the
dialysate solution. Verifying that both conductivity and pH fall within the prescribed, safe
range is essential to prevent severe complications such as hemolysis (rupture of red blood
cells due to hypotonic dialysate) or crenation (cell shrinkage due to hypertonic dialysate).
2. During a routine hemodialysis treatment, a patient's low blood pressure alarm sounds.
The PCT notes the blood pressure has dropped from 128/82 mmHg to 90/58 mmHg. What
should be the immediate first action taken by the PCT?
A. Administer a 500 mL bolus of hypertonic saline solution
B. Place the patient in the Trendelenburg position and reduce the ultrafiltration rate
C. Terminate the dialysis treatment immediately and return the blood
D. Increase the blood pump speed to restore vascular volume
Rationale: Placing the patient in the Trendelenburg position (feet elevated above the heart)
promotes venous return to vital organs, and reducing the ultrafiltration rate (UFR) prevents
further intravascular fluid depletion. Administering hypertonic saline requires a specific
prescription, and increasing blood pump speed would not address hypotension.
3. Which of the following is considered the gold standard for vascular access in chronic
hemodialysis patients due to its lower complication rates and longer patency?
A. Arteriovenous graft (AVG)
B. Tunneled central venous catheter (CVC)
C. Arteriovenous fistula (AVF)
D. Temporary non-tunneled subclavian catheter
Rationale: An arteriovenous fistula (AVF) is constructed using native vessels, resulting in
significantly lower rates of infection, thrombosis, and intervention compared to synthetic
,grafts (AVGs) or central venous catheters (CVCs), making it the preferred long-term vascular
access.
4. A patient care technician is assessing a patient's arteriovenous fistula prior to
cannulation. Which step is mandatory before inserting needles into the vascular access?
A. Applying a tourniquet above and below the access site
B. Palpating for a thrill and listening for a continuous bruit
C. Flushing both needles with 20 mL of heparin solution
D. Cleansing the access site with isopropyl alcohol for 5 seconds
Rationale: Before cannulating an AV access, the PCT must assess patency by feeling for a thrill
(vibration) and auscultating for a continuous bruit (swishing sound). Absence of either may
indicate thrombosis or stenosis, requiring immediate escalation before needle insertion.
5. Which personal protective equipment (PPE) combination is required for a PCT when
initiating hemodialysis treatment and handling blood lines?
A. Clean gloves and a simple cloth face mask only
B. Full face shield or mask with safety glasses, fluid-resistant gown, and clean gloves
C. Sterile surgical gown, sterile gloves, and N95 respirator
D. Clean gloves and an apron without facial protection
Rationale: Standard precautions for hemodialysis require protection against potential blood
splashes and aerosolization during connection and disconnection. A fluid-resistant gown,
gloves, and full face protection (or mask with eye protection) are mandatory.
6. What is the primary functional component of the dialyzer that allows blood and
dialysate to interact without directly mixing?
A. The venous drop chamber
B. The semipermeable membrane
C. The arterial blood pump segment
D. The bypass valve assembly
Rationale: The semipermeable membrane contains microscopic pores that selectively allow
water and small-to-medium solutes (such as urea, creatinine, and electrolytes) to pass
between blood and dialysate via diffusion and convection while blocking large proteins and
blood cells.
7. A patient asks the PCT why their dry weight is reassessed frequently. Which response by
the technician best explains this concept?
A. "Dry weight is your ideal body weight when your body is completely free of excess fluid
without developing low blood pressure."
, B. "Dry weight is your actual weight measured immediately after eating a meal before
treatment."
C. "Dry weight represents the maximum weight you can safely gain between your dialysis
sessions."
D. "Dry weight is the weight of the fluid that must be removed during every single treatment."
Rationale: Dry weight (target weight) is defined as the estimated post-dialysis weight at
which the patient is normotensive and free of edema or fluid overload without experiencing
hypotension or cramping.
8. When performing a pre-treatment physical assessment, the PCT notes fine crackles upon
auscultation of the patient's lower lung fields and +3 pitting edema in the lower extremities.
These findings primarily indicate:
A. Severe intravascular dehydration
B. Hyperkalemia and metabolic acidosis
C. Fluid volume overload
D. Acute access recirculation
Rationale: Pulmonary crackles and peripheral edema are classic manifestations of excess fluid
accumulation in the extracellular space, highlighting the need for ultrafiltration during the
upcoming hemodialysis session.
9. What is the correct needle angle insertion technique when cannulating a mature
arteriovenous fistula using the rope-ladder technique?
A. 10 to 15 degrees for arterial, 45 to 60 degrees for venous
B. 25 to 35 degrees for an AV fistula, 45 degrees for an AV graft
C. 45 to 55 degrees for an AV fistula, 15 to 20 degrees for an AV graft
D. 90 degrees perpendicular to the skin surface for both access types
Rationale: Proper insertion mechanics dictate an angle of 25 to 35 degrees for native AV
fistulas (due to shallower vessel placement) and 45 degrees for synthetic AV grafts (which are
typically placed deeper under the skin layer).
10. A PCT notices air bubbles in the venous blood line during treatment. The automated
air detector alarm fails to trigger. What is the technician's immediate corrective action?
A. Increase the blood pump speed to flush the air through the dialyzer
B. Clamp the venous blood line, stop the blood pump, and notify the charge nurse
C. Administer normal saline into the arterial port to push the air into the patient
D. Disconnect the patient and flush the blood line into the drain bag
, Rationale: If air enters the venous blood line and the machine air clamp/detector fails, the
PCT must manually clamp the venous line immediately and stop the blood pump to prevent a
life-threatening air embolism.
11. Which electrolyte in the dialysate bath is most critical to monitor and adjust based on
the patient's pre-treatment serum blood levels?
A. Sodium
B. Bicarbonate
C. Potassium
D. Calcium
Rationale: Serum potassium levels must be carefully managed in end-stage renal disease
(ESRD) patients to prevent fatal cardiac dysrhythmias. Dialysate potassium concentration is
prescribed specifically based on the patient's pre-dialysis serum potassium level.
12. When washing hands between patient contacts, what is the minimum duration
recommended by infection control guidelines for rubbing hands with soap and water?
A. 5 seconds
B. 10 seconds
C. 20 seconds
D. 60 seconds
Rationale: CDC and standard infection control guidelines mandate scrubbing hands
thoroughly with soap and water for at least 20 seconds to effectively remove pathogens and
prevent cross-contamination in healthcare settings.
13. A patient experiences severe muscle cramps in the legs during the third hour of
hemodialysis. Which intervention should the PCT perform first?
A. Administer sublingual nitroglycerin immediately
B. Place ice packs on the affected muscle groups
C. Turn off the dialysate flow completely for the rest of the treatment
D. Reduce the ultrafiltration rate and administer a prescribed normal saline bolus
Rationale: Muscle cramps during dialysis are primarily caused by rapid fluid removal or tissue
hypoperfusion. Temporarily stopping or reducing ultrafiltration and administering a small
normal saline bolus helps restore tissue perfusion and relieve cramping.
14. Which document or standard regulates the quality and bacterial limits of water used
for hemodialysis fluid preparation?
A. OSHA Bloodborne Pathogens Standard
B. Association for the Advancement of Medical Instrumentation (AAMI) standards
TECHNICIAN | ALL QUESTIONS AND ANSWERS 2026/2027 |
VERIFIED ANSWERS PLUS RATIONALES | GRADED Q&A
COMPREHENSIVE STUDY GUIDE | VERIFIED LATEST 2027
1. A patient care technician (PCT) is preparing the hemodialysis machine for a patient's
treatment. What is the primary purpose of conducting an automated dialysate conductivity
and pH test prior to initiating therapy?
A. To verify that the dialyzer blood lines are free of air bubbles
B. To ensure the dialysate composition is safe and prevents hemolysis or crenation
C. To calculate the patient's target ultrafiltration rate for the treatment session
D. To confirm that the blood pump speeds match the physician's prescription
Rationale: Dialysate conductivity measures the concentration of total dissolved solids in the
dialysate solution. Verifying that both conductivity and pH fall within the prescribed, safe
range is essential to prevent severe complications such as hemolysis (rupture of red blood
cells due to hypotonic dialysate) or crenation (cell shrinkage due to hypertonic dialysate).
2. During a routine hemodialysis treatment, a patient's low blood pressure alarm sounds.
The PCT notes the blood pressure has dropped from 128/82 mmHg to 90/58 mmHg. What
should be the immediate first action taken by the PCT?
A. Administer a 500 mL bolus of hypertonic saline solution
B. Place the patient in the Trendelenburg position and reduce the ultrafiltration rate
C. Terminate the dialysis treatment immediately and return the blood
D. Increase the blood pump speed to restore vascular volume
Rationale: Placing the patient in the Trendelenburg position (feet elevated above the heart)
promotes venous return to vital organs, and reducing the ultrafiltration rate (UFR) prevents
further intravascular fluid depletion. Administering hypertonic saline requires a specific
prescription, and increasing blood pump speed would not address hypotension.
3. Which of the following is considered the gold standard for vascular access in chronic
hemodialysis patients due to its lower complication rates and longer patency?
A. Arteriovenous graft (AVG)
B. Tunneled central venous catheter (CVC)
C. Arteriovenous fistula (AVF)
D. Temporary non-tunneled subclavian catheter
Rationale: An arteriovenous fistula (AVF) is constructed using native vessels, resulting in
significantly lower rates of infection, thrombosis, and intervention compared to synthetic
,grafts (AVGs) or central venous catheters (CVCs), making it the preferred long-term vascular
access.
4. A patient care technician is assessing a patient's arteriovenous fistula prior to
cannulation. Which step is mandatory before inserting needles into the vascular access?
A. Applying a tourniquet above and below the access site
B. Palpating for a thrill and listening for a continuous bruit
C. Flushing both needles with 20 mL of heparin solution
D. Cleansing the access site with isopropyl alcohol for 5 seconds
Rationale: Before cannulating an AV access, the PCT must assess patency by feeling for a thrill
(vibration) and auscultating for a continuous bruit (swishing sound). Absence of either may
indicate thrombosis or stenosis, requiring immediate escalation before needle insertion.
5. Which personal protective equipment (PPE) combination is required for a PCT when
initiating hemodialysis treatment and handling blood lines?
A. Clean gloves and a simple cloth face mask only
B. Full face shield or mask with safety glasses, fluid-resistant gown, and clean gloves
C. Sterile surgical gown, sterile gloves, and N95 respirator
D. Clean gloves and an apron without facial protection
Rationale: Standard precautions for hemodialysis require protection against potential blood
splashes and aerosolization during connection and disconnection. A fluid-resistant gown,
gloves, and full face protection (or mask with eye protection) are mandatory.
6. What is the primary functional component of the dialyzer that allows blood and
dialysate to interact without directly mixing?
A. The venous drop chamber
B. The semipermeable membrane
C. The arterial blood pump segment
D. The bypass valve assembly
Rationale: The semipermeable membrane contains microscopic pores that selectively allow
water and small-to-medium solutes (such as urea, creatinine, and electrolytes) to pass
between blood and dialysate via diffusion and convection while blocking large proteins and
blood cells.
7. A patient asks the PCT why their dry weight is reassessed frequently. Which response by
the technician best explains this concept?
A. "Dry weight is your ideal body weight when your body is completely free of excess fluid
without developing low blood pressure."
, B. "Dry weight is your actual weight measured immediately after eating a meal before
treatment."
C. "Dry weight represents the maximum weight you can safely gain between your dialysis
sessions."
D. "Dry weight is the weight of the fluid that must be removed during every single treatment."
Rationale: Dry weight (target weight) is defined as the estimated post-dialysis weight at
which the patient is normotensive and free of edema or fluid overload without experiencing
hypotension or cramping.
8. When performing a pre-treatment physical assessment, the PCT notes fine crackles upon
auscultation of the patient's lower lung fields and +3 pitting edema in the lower extremities.
These findings primarily indicate:
A. Severe intravascular dehydration
B. Hyperkalemia and metabolic acidosis
C. Fluid volume overload
D. Acute access recirculation
Rationale: Pulmonary crackles and peripheral edema are classic manifestations of excess fluid
accumulation in the extracellular space, highlighting the need for ultrafiltration during the
upcoming hemodialysis session.
9. What is the correct needle angle insertion technique when cannulating a mature
arteriovenous fistula using the rope-ladder technique?
A. 10 to 15 degrees for arterial, 45 to 60 degrees for venous
B. 25 to 35 degrees for an AV fistula, 45 degrees for an AV graft
C. 45 to 55 degrees for an AV fistula, 15 to 20 degrees for an AV graft
D. 90 degrees perpendicular to the skin surface for both access types
Rationale: Proper insertion mechanics dictate an angle of 25 to 35 degrees for native AV
fistulas (due to shallower vessel placement) and 45 degrees for synthetic AV grafts (which are
typically placed deeper under the skin layer).
10. A PCT notices air bubbles in the venous blood line during treatment. The automated
air detector alarm fails to trigger. What is the technician's immediate corrective action?
A. Increase the blood pump speed to flush the air through the dialyzer
B. Clamp the venous blood line, stop the blood pump, and notify the charge nurse
C. Administer normal saline into the arterial port to push the air into the patient
D. Disconnect the patient and flush the blood line into the drain bag
, Rationale: If air enters the venous blood line and the machine air clamp/detector fails, the
PCT must manually clamp the venous line immediately and stop the blood pump to prevent a
life-threatening air embolism.
11. Which electrolyte in the dialysate bath is most critical to monitor and adjust based on
the patient's pre-treatment serum blood levels?
A. Sodium
B. Bicarbonate
C. Potassium
D. Calcium
Rationale: Serum potassium levels must be carefully managed in end-stage renal disease
(ESRD) patients to prevent fatal cardiac dysrhythmias. Dialysate potassium concentration is
prescribed specifically based on the patient's pre-dialysis serum potassium level.
12. When washing hands between patient contacts, what is the minimum duration
recommended by infection control guidelines for rubbing hands with soap and water?
A. 5 seconds
B. 10 seconds
C. 20 seconds
D. 60 seconds
Rationale: CDC and standard infection control guidelines mandate scrubbing hands
thoroughly with soap and water for at least 20 seconds to effectively remove pathogens and
prevent cross-contamination in healthcare settings.
13. A patient experiences severe muscle cramps in the legs during the third hour of
hemodialysis. Which intervention should the PCT perform first?
A. Administer sublingual nitroglycerin immediately
B. Place ice packs on the affected muscle groups
C. Turn off the dialysate flow completely for the rest of the treatment
D. Reduce the ultrafiltration rate and administer a prescribed normal saline bolus
Rationale: Muscle cramps during dialysis are primarily caused by rapid fluid removal or tissue
hypoperfusion. Temporarily stopping or reducing ultrafiltration and administering a small
normal saline bolus helps restore tissue perfusion and relieve cramping.
14. Which document or standard regulates the quality and bacterial limits of water used
for hemodialysis fluid preparation?
A. OSHA Bloodborne Pathogens Standard
B. Association for the Advancement of Medical Instrumentation (AAMI) standards
