FRESENIUS RN EXAM | NEWEST 2026 ACTUAL EXAM VERSION | ALL 185
QUESTIONS & CORRECT ANSWERS | ALREADY GRADED A+ | 100% VERIFIED
Hemodialysis Nursing, Vascular Access Management, Fluid & Electrolyte Balance, Safety
Protocols, Infection Control, Dialyzer Function, Ultrafiltration Principles, Cardiovascular
Monitoring, Medication Administration, and Patient Education | Expert-Verified Format &
Structure | Exam-Ready
Introduction
This 2026 Fresenius RN Exam layout provides the full standardized structure for generating
dialysis-focused nursing exam content with validated and clinically aligned answers. It reflects
essential competencies in chronic and acute hemodialysis care, safe patient monitoring, vascular
access management, and evidence-based dialysis nursing responsibilities. All exam content
created using this format supports high-level clinical judgment and safe, effective practice in the
renal care setting.
Answer Format
All correct answers must be displayed in bold and green, followed by clear rationales that
reinforce dialysis-specific safety, clinical reasoning, and the rationale for eliminating incorrect
options.
Question 1
During pre-dialysis assessment, which finding requires immediate intervention before initiating
treatment?
A. BP 138/82 mmHg
B. AVF thrill palpable, bruit auscultated
C. Temperature 38.9 °C
D. Dry weight target unchanged
Answer: C. Temperature 38.9 °C
Rationale: Fever > 38 °C signals possible infection or sepsis; dialysis increases risk of
bacteremia via vascular access. Dialysis should be delayed until source is identified and
antipyretics/antibiotics are initiated. Other choices are within acceptable limits or expected
findings.
Question 2
The prescribed dialysate potassium concentration is 2 K⁺ mmol/L. The patient’s pre-dialysis K⁺
is 6.2 mmol/L. The safest nursing action is:
A. Increase dialysate K⁺ to 3 mmol/L to avoid hypokalemia
,B. Decrease dialysate K⁺ to 1 mmol/L for rapid correction
C. Maintain prescription at 2 mmol/L and monitor ECG
D. Hold dialysis until K⁺ falls below 5.5 mmol/L
Answer: C. Maintain prescription at 2 mmol/L and monitor ECG
Rationale: A 2 mmol/L gradient allows controlled removal without precipitating arrhythmias
or steep flux. Lowering dialysate K⁺ to 1 mmol/L (B) risks rebound hypokalemia and
arrhythmias. Holding dialysis (D) delays life-threatening hyperkalemia treatment.
Question 3
Which intervention best reduces the risk of dialysis disequilibrium syndrome during a high-urea
patient’s first session?
A. Increase blood flow to 500 mL/min to shorten session
B. Reduce dialysate sodium to 130 mEq/L
C. Limit urea reduction ratio (URR) to ≤ 40 % and use slower blood flow
D. Give 25 g mannitol IV push at session end
Answer: C. Limit urea reduction ratio (URR) to ≤ 40 % and use slower blood flow
Rationale: Slow, gentle urea removal prevents cerebral edema from reverse urea effect. Rapid
clearance (A) increases gradient; mannitol (D) is adjunct but not primary prevention.
Question 4
A patient’s arterial needle infiltrates 10 minutes into treatment. The nurse’s first action is:
A. Continue dialysis at reduced blood flow
B. Immediately stop blood pump and clamp lines
C. Switch to single-needle mode
D. Apply warm compress and resume
Answer: B. Immediately stop blood pump and clamp lines
Rationale: Stopping the pump prevents further extravasation of blood and hematoma
formation. Needles must be removed and pressure applied; dialysis cannot continue via
infiltrated site.
Question 5
While priming the dialyzer, the nurse notes residual disinfectant (bleach) odor. The correct
action is:
A. Begin dialysis and monitor patient closely
B. Rinse with 500 mL saline and proceed
,C. Discard dialyzer and obtain new sterile set-up
D. Use sodium thiosulfate to neutralize bleach
Answer: C. Discard dialyzer and obtain new sterile set-up
Rationale: No disinfectant can remain; chemical hemolysis or anaphylaxis risk outweighs cost
of new dialyzer. Rinsing (B) does not guarantee complete removal.
Question 6
The ultrafiltration coefficient (KUF) of a dialyzer is 8 mL/h/mmHg. Prescribed fluid removal is
2 L over 4 hours with TMP 250 mmHg. The nurse should anticipate:
A. Exactly 2 L removal as prescribed
B. 2.5 L actual removal—notify nephrologist
C. 1.5 L removal—increase TMP
D. No need to verify; machine is calibrated
Answer: B. 2.5 L actual removal—notify nephrologist
Rationale: Expected UF = KUF × TMP × hours = 8 × 250 × 4 = 8,000 mL = 2 L. However,
actual TMP may exceed set value due to hematocrit changes; 2.5 L indicates overshoot requiring
adjustment to prevent hypotension.
Question 7
A patient on heparin-free dialysis develops sudden venous pressure alarms and visual clots in
the drip chamber. The priority action is:
A. Flush saline and reduce blood flow
B. Administer 2 000 units heparin IV
C. Stop treatment, return blood if safe, or discard lines
D. Switch dialyzer mid-session
Answer: C. Stop treatment, return blood if safe, or discard lines
Rationale: Continuing risks clot propagation and embolism. Heparin (B) cannot dissolve
existing clots during session; returning blood must be weighed against risk of dislodging clot.
Question 8
Which lab value best indicates adequate dialysis dose in a stable adult?
A. Pre-dialysis BUN 80 mg/dL
B. spKt/V ≥ 1.2
C. Serum creatinine 5 mg/dL
D. Post-dialysis BUN 10 mg/dL
, Answer: B. spKt/V ≥ 1.2
Rationale: Kt/V ≥ 1.2 (target ≥ 1.4) is standardized measure of urea clearance normalized to
volume. Isolated BUN values (A,D) lack clearance/volume context.
Question 9
A patient complains of chest pain and dyspnea 30 minutes into dialysis. BP drops from 150/90
to 88/50 mmHg, HR 110. The nurse suspects air embolism. The immediate step is:
A. Place patient in Trendelenburg left lateral decubitus
B. Stop UF and give 250 mL saline
C. Administer 100 % O₂ and call physician
D. Clamp lines and turn off blood pump
Answer: D. Clamp lines and turn off blood pump
Rationale: Stopping pump prevents more air entry; clamp venous line to halt embolus travel.
Left lateral Trendelenburg (A) follows once pump is stopped.
Question 10
Which vascular access has the highest long-term patency rate?
A. Non-tunneled central venous catheter
B. Tunneled cuffed catheter
C. Arteriovenous fistula
D. Arteriovenous graft
Answer: C. Arteriovenous fistula
Rationale: AVF has lowest infection and thrombosis rates, with 5-year patency > 60 %. Grafts
(D) and catheters (A,B) have higher complication rates.
Question 11
During initiation, the patient develops nausea and yawning. BP drops from 150/90 to 110/70
mmHg. The nurse should:
A. Stop dialysis and return blood immediately
B. Infuse 250 mL isotonic saline and slow UF rate
C. Administer antiemetic and continue
D. Increase dialysate sodium to 150 mEq/L
Answer: B. Infuse 250 mL isotonic saline and slow UF rate
Rationale: Early hypotension reflects rapid plasma volume removal/refill mismatch. Saline
QUESTIONS & CORRECT ANSWERS | ALREADY GRADED A+ | 100% VERIFIED
Hemodialysis Nursing, Vascular Access Management, Fluid & Electrolyte Balance, Safety
Protocols, Infection Control, Dialyzer Function, Ultrafiltration Principles, Cardiovascular
Monitoring, Medication Administration, and Patient Education | Expert-Verified Format &
Structure | Exam-Ready
Introduction
This 2026 Fresenius RN Exam layout provides the full standardized structure for generating
dialysis-focused nursing exam content with validated and clinically aligned answers. It reflects
essential competencies in chronic and acute hemodialysis care, safe patient monitoring, vascular
access management, and evidence-based dialysis nursing responsibilities. All exam content
created using this format supports high-level clinical judgment and safe, effective practice in the
renal care setting.
Answer Format
All correct answers must be displayed in bold and green, followed by clear rationales that
reinforce dialysis-specific safety, clinical reasoning, and the rationale for eliminating incorrect
options.
Question 1
During pre-dialysis assessment, which finding requires immediate intervention before initiating
treatment?
A. BP 138/82 mmHg
B. AVF thrill palpable, bruit auscultated
C. Temperature 38.9 °C
D. Dry weight target unchanged
Answer: C. Temperature 38.9 °C
Rationale: Fever > 38 °C signals possible infection or sepsis; dialysis increases risk of
bacteremia via vascular access. Dialysis should be delayed until source is identified and
antipyretics/antibiotics are initiated. Other choices are within acceptable limits or expected
findings.
Question 2
The prescribed dialysate potassium concentration is 2 K⁺ mmol/L. The patient’s pre-dialysis K⁺
is 6.2 mmol/L. The safest nursing action is:
A. Increase dialysate K⁺ to 3 mmol/L to avoid hypokalemia
,B. Decrease dialysate K⁺ to 1 mmol/L for rapid correction
C. Maintain prescription at 2 mmol/L and monitor ECG
D. Hold dialysis until K⁺ falls below 5.5 mmol/L
Answer: C. Maintain prescription at 2 mmol/L and monitor ECG
Rationale: A 2 mmol/L gradient allows controlled removal without precipitating arrhythmias
or steep flux. Lowering dialysate K⁺ to 1 mmol/L (B) risks rebound hypokalemia and
arrhythmias. Holding dialysis (D) delays life-threatening hyperkalemia treatment.
Question 3
Which intervention best reduces the risk of dialysis disequilibrium syndrome during a high-urea
patient’s first session?
A. Increase blood flow to 500 mL/min to shorten session
B. Reduce dialysate sodium to 130 mEq/L
C. Limit urea reduction ratio (URR) to ≤ 40 % and use slower blood flow
D. Give 25 g mannitol IV push at session end
Answer: C. Limit urea reduction ratio (URR) to ≤ 40 % and use slower blood flow
Rationale: Slow, gentle urea removal prevents cerebral edema from reverse urea effect. Rapid
clearance (A) increases gradient; mannitol (D) is adjunct but not primary prevention.
Question 4
A patient’s arterial needle infiltrates 10 minutes into treatment. The nurse’s first action is:
A. Continue dialysis at reduced blood flow
B. Immediately stop blood pump and clamp lines
C. Switch to single-needle mode
D. Apply warm compress and resume
Answer: B. Immediately stop blood pump and clamp lines
Rationale: Stopping the pump prevents further extravasation of blood and hematoma
formation. Needles must be removed and pressure applied; dialysis cannot continue via
infiltrated site.
Question 5
While priming the dialyzer, the nurse notes residual disinfectant (bleach) odor. The correct
action is:
A. Begin dialysis and monitor patient closely
B. Rinse with 500 mL saline and proceed
,C. Discard dialyzer and obtain new sterile set-up
D. Use sodium thiosulfate to neutralize bleach
Answer: C. Discard dialyzer and obtain new sterile set-up
Rationale: No disinfectant can remain; chemical hemolysis or anaphylaxis risk outweighs cost
of new dialyzer. Rinsing (B) does not guarantee complete removal.
Question 6
The ultrafiltration coefficient (KUF) of a dialyzer is 8 mL/h/mmHg. Prescribed fluid removal is
2 L over 4 hours with TMP 250 mmHg. The nurse should anticipate:
A. Exactly 2 L removal as prescribed
B. 2.5 L actual removal—notify nephrologist
C. 1.5 L removal—increase TMP
D. No need to verify; machine is calibrated
Answer: B. 2.5 L actual removal—notify nephrologist
Rationale: Expected UF = KUF × TMP × hours = 8 × 250 × 4 = 8,000 mL = 2 L. However,
actual TMP may exceed set value due to hematocrit changes; 2.5 L indicates overshoot requiring
adjustment to prevent hypotension.
Question 7
A patient on heparin-free dialysis develops sudden venous pressure alarms and visual clots in
the drip chamber. The priority action is:
A. Flush saline and reduce blood flow
B. Administer 2 000 units heparin IV
C. Stop treatment, return blood if safe, or discard lines
D. Switch dialyzer mid-session
Answer: C. Stop treatment, return blood if safe, or discard lines
Rationale: Continuing risks clot propagation and embolism. Heparin (B) cannot dissolve
existing clots during session; returning blood must be weighed against risk of dislodging clot.
Question 8
Which lab value best indicates adequate dialysis dose in a stable adult?
A. Pre-dialysis BUN 80 mg/dL
B. spKt/V ≥ 1.2
C. Serum creatinine 5 mg/dL
D. Post-dialysis BUN 10 mg/dL
, Answer: B. spKt/V ≥ 1.2
Rationale: Kt/V ≥ 1.2 (target ≥ 1.4) is standardized measure of urea clearance normalized to
volume. Isolated BUN values (A,D) lack clearance/volume context.
Question 9
A patient complains of chest pain and dyspnea 30 minutes into dialysis. BP drops from 150/90
to 88/50 mmHg, HR 110. The nurse suspects air embolism. The immediate step is:
A. Place patient in Trendelenburg left lateral decubitus
B. Stop UF and give 250 mL saline
C. Administer 100 % O₂ and call physician
D. Clamp lines and turn off blood pump
Answer: D. Clamp lines and turn off blood pump
Rationale: Stopping pump prevents more air entry; clamp venous line to halt embolus travel.
Left lateral Trendelenburg (A) follows once pump is stopped.
Question 10
Which vascular access has the highest long-term patency rate?
A. Non-tunneled central venous catheter
B. Tunneled cuffed catheter
C. Arteriovenous fistula
D. Arteriovenous graft
Answer: C. Arteriovenous fistula
Rationale: AVF has lowest infection and thrombosis rates, with 5-year patency > 60 %. Grafts
(D) and catheters (A,B) have higher complication rates.
Question 11
During initiation, the patient develops nausea and yawning. BP drops from 150/90 to 110/70
mmHg. The nurse should:
A. Stop dialysis and return blood immediately
B. Infuse 250 mL isotonic saline and slow UF rate
C. Administer antiemetic and continue
D. Increase dialysate sodium to 150 mEq/L
Answer: B. Infuse 250 mL isotonic saline and slow UF rate
Rationale: Early hypotension reflects rapid plasma volume removal/refill mismatch. Saline
