Certified Nephrology Nurse Practice Test Study Guide

If you care for patients with kidney disease, mastery of nephrology nursing is both a professional responsibility and a daily practical challenge. This certified nephrology nurse practice test is designed to mirror real clinical decisions — not rote recall — so you build judgment that keeps patients safe. Whether you’re preparing for the certified dialysis nurse test, aiming to advance toward the role of a certified nephrology nurse practitioner, or supporting a team through continuous quality improvement, this exam bank and study framework deliver the depth, breadth, and clinical nuance you need.

What this resource simulates

This practice exam is a clinically realistic question bank covering acute and chronic kidney care across the lifespan. Items replicate scenarios you’ll encounter in dialysis units, transplant clinics, inpatient nephrology services, and home dialysis programs. Expect case-based questions on vascular access troubleshooting, peritoneal dialysis infections, CRRT and citrate anticoagulation monitoring, AKI risk stratification, transplant immunology and drug interactions, pediatric growth issues, geriatric frailty and goals-of-care conversations, water system microbiology, and more. Think of this as a working clinical mirror: it tests what you must do, not just what you must memorize.

How do I become a Certified Nephrology Nurse?

1. Gain hands-on experience. Employers and certifying bodies typically expect a defined number of hours in nephrology settings — in-center hemodialysis, peritoneal dialysis programs, transplant services, or acute nephrology units.
2. Study with targeted materials. Use a robust certified nephrology nurse study guide and practice tests to fill knowledge gaps. This practice bank is intentionally aligned to current clinical priorities so your study time yields real improvements.
3. Apply for certification. Review the eligibility requirements for the credential you seek. After meeting practice-hour and educational prerequisites, submit your application and schedule the exam.
4. Pass the exam and maintain competence. Certification requires ongoing continuing education and practice; use periodic practice testing and unit audits to stay sharp.

If your career plan includes advanced practice, such as becoming a certified nephrology nurse practitioner, combine graduate education with targeted clinical experience and specialty certification pathways.

What you will learn:

This exam prepares you to:

• Recognize and manage acute, life-threatening dialysis complications (severe hyperkalemia, air embolism, intradialytic hypotension, uremic pericarditis).
• Troubleshoot and preserve vascular access through surveillance, urgent angioplasty, and thrombosis prevention.
• Diagnose and treat peritoneal dialysis peritonitis (bacterial, fungal, atypical), catheter leaks, and exit-site infections.
• Understand CRRT modes and the fine points of regional citrate anticoagulation, including how to monitor total vs. ionized calcium.
• Interpret early AKI biomarkers (like NGAL) to guide earlier intervention and nephrology referral.
• Dose antimicrobials safely in renal failure and coordinate stewardship practices to reduce resistance.
• Identify and manage transplant complications — donor-specific antibodies, antibody-mediated rejection, BK and CMV infection — and safely reconcile interacting medications.
• Apply modern anemia and mineral bone disease therapies (ESAs, HIF stabilizers, phosphate binders, calcimimetics) with appropriate monitoring.
• Lead infection prevention programs (water testing, biofilm control), home dialysis training, telehealth workflows, and disaster preparedness for continuity of care.
• Facilitate shared decision-making, including advance care planning and ethically complex allocation conversations.

These competencies reflect the practical skills tested on the certified dialysis nurse practice test and support safe patient care across settings.

Complete list of topics covered (mapped to clinical practice)

• Vascular access: maturation criteria, cannulation methods (rope ladder vs. buttonhole), steal syndrome, aneurysm management, declotting and angioplasty strategies.
• Dialysis adequacy & troubleshooting: Kt/V fundamentals, recirculation detection, TMP/clotting problems, dialyzer performance.
• Hemodialysis complications: intradialytic hypotension prevention, myocardial stunning mitigation, dialysis disequilibrium syndrome, cramps and hypotension management.
• Peritoneal dialysis: technique training, IP antibiotic administration, culture interpretation, chemical vs. infectious peritonitis, icodextrin use.
• CRRT & anticoagulation: citrate anticoagulation monitoring, signs of citrate accumulation, modality selection in hemodynamically unstable patients.
• AKI management: early biomarker application, nephrotoxin stewardship, fluid and hemodynamic optimization, perioperative kidney protection.
• Transplant care: HLA antibody testing (SAB), desensitization protocols, AMR management, BK and CMV surveillance and prophylaxis, drug interactions and trough monitoring.
• Pharmacology in CKD: antibiotic dosing and timing with dialysis, aminoglycoside and vancomycin monitoring, DOAC considerations.
• Anemia & bone disease: ESA strategies, HIF stabilizers, phosphate binders and pill burden solutions, cinacalcet/etelcalcetide monitoring.
• Infection control & water quality: heterotrophic plate counts, endotoxin testing, catheter care bundles, VRE/MRSA containment.
• Special populations: pediatric growth and rhGH, pregnancy and intensified dialysis, frailty assessment in older adults.
• Systems & quality: CRBSI rates per 1,000 catheter days, access prevalence, PDSA cycles, learning health system components.

Who can take this practice exam / Who will benefit

• Registered nurses preparing for the certified dialysis nurse exam or the broader certified nephrology nurse practice test.
• Nurse practitioners and physicians pursuing nephrology-focused certification, including those aiming to be a certified nephrology nurse practitioner.
• Unit educators, quality improvement leads, infection control professionals, pharmacists, and trainees seeking a practical, job-centered question bank.
• Home dialysis educators and PD trainers using the material to validate competency and retrain staff and patients.

Study tips — how to use this practice bank effectively

1. Active retrieval: Answer each case first, then read the full rationale to cement clinical reasoning.
2. Spacing and repetition: Rotate topics (access, PD, CRRT, transplant) across study sessions to improve long-term retention.
3. Simulated testing: Time yourself and mimic exam conditions to build endurance and reduce test anxiety.
4. Clinical integration: After shifts, map real patient cases to question topics — this turns abstract knowledge into usable skill.
5. Focus on weak spots: Track missed items, then re-test those topics until accuracy improves.
6. Use this resource alongside a certified nephrology nurse study guide and institutional protocols for combined theoretical and practical coverage.
7. Form a study group: Teaching peers is one of the fastest ways to deepen understanding.

Preparation for specialty certification should be purposeful and clinically oriented. This practice test is not a shortcut — it’s a structured bridge between clinical experience and exam competence. Whether you download a certified dialysis nurse exam practice questions PDF, work through online question sets, or combine these items with a trusted certified nephrology nurse study guide, the goal is the same: develop safe, confident judgment at the bedside. Use this exam to sharpen reasoning, reduce preventable harm, and move your career forward with a clear, practical roadmap toward certification and advanced practice.

Sample Questions and Answers

A 62-year-old patient with stage 5 CKD on thrice-weekly hemodialysis complains of new post-dialysis cramping and lightheadedness. His pre-dialysis weight is stable; ultrafiltration was increased by 0.7 L today. Which immediate nursing action is best?

A. Increase dialysate sodium concentration.
B. Slow ultrafiltration and administer small boluses of isotonic saline.
C. Stop dialysis and call the nephrologist to admit the patient.
D. Give oral salt tablets at the station.

Answer: B.
Explanation: Acute intradialytic hypotension and cramps are commonly due to excessive or too-rapid ultrafiltration. The most appropriate immediate nursing intervention is to slow or stop ultrafiltration and give small boluses of isotonic saline (typically 100–200 mL IV boluses as needed), reposition the patient supine with legs elevated, and reassess hemodynamics. Increasing dialysate sodium can help prevent intradialytic hypotension over time but is not the first acute action. Stopping dialysis and admitting may be necessary for severe instability but is premature for moderate cramps/lightheadedness. Oral salt tablets act slowly and are inappropriate in the acute setting where IV volume support and slowing UF address the physiology immediately.

Which lab pattern is most consistent with a diagnosis of acute tubular necrosis (ATN) caused by ischemia?

A. Bland urinalysis with specific gravity >1.030 and hyaline casts.
B. Elevated BUN:Cr ratio (>20:1), low fractional excretion of sodium (FeNa <1%).
C. Muddy brown granular casts on urine microscopy and FeNa >2%.
D. Heavy proteinuria and RBC casts.

Answer: C.
Explanation: Ischemic ATN typically produces characteristic muddy brown granular casts (degenerating tubular epithelial cells) on urine microscopy and an elevated fractional excretion of sodium (FeNa commonly >2%), reflecting tubular epithelial injury and impaired sodium reabsorption. Prerenal azotemia shows high specific gravity and low FeNa (<1%). A BUN:Cr ratio >20:1 is suggestive of prerenal causes rather than intrinsic ATN. Heavy proteinuria and RBC casts suggest glomerulonephritis, not ATN. Recognizing the FeNa and sediment pattern helps differentiate prerenal from intrinsic AKI and guides management (volume resuscitation vs renal support).

A patient receiving continuous ambulatory peritoneal dialysis (CAPD) notes cloudy effluent and new abdominal pain. Which is the most appropriate immediate nursing step?

A. Encourage extra oral fluids and observe at home for 48 hours.
B. Send the effluent for cell count and culture and start empiric intraperitoneal antibiotic per protocol.
C. Switch to hemodialysis permanently.
D. Increase dwell time and repeat exchange.

Answer: B.
Explanation: Cloudy PD effluent with abdominal pain is suspicious for peritonitis, a potentially serious infection. Immediate steps include collecting effluent for cell count, Gram stain, and culture, and initiating empiric intraperitoneal antibiotics according to local protocol while awaiting results. Prompt targeted therapy reduces morbidity and preserves peritoneal membrane function. Observation without diagnostics or antibiotics delays treatment and risks worsening infection. Switching to hemodialysis may be necessary if PD fails, but not as an immediate step before treating infection. Increasing dwell time is not indicated and may worsen symptoms.

Which vascular access site is generally preferred for tunneled hemodialysis catheter insertion to minimize long-term complications?

A. Left subclavian vein.
B. Right internal jugular vein.
C. Femoral vein.
D. Left internal jugular vein.

Answer: B.
Explanation: The right internal jugular vein is preferred for tunneled central venous catheters because it provides a more direct path to the right atrium and tends to be associated with fewer mechanical complications and lower risk of central venous stenosis compared with left-sided or subclavian placements. Femoral catheters are used for short-term access, especially in emergencies or when upper body access is contraindicated. The subclavian site is associated with a higher risk of central vein stenosis and should be avoided for long-term dialysis catheters if possible because stenosis complicates future AV access creation.

A patient with ESRD on hemodialysis has a K of 6.5 mmol/L on routine labs but is asymptomatic and ECG is normal. Which is the most appropriate immediate nursing action?

A. Send the patient home and repeat labs next week.
B. Administer oral sodium polystyrene sulfonate (kayexalate) immediately.
C. Notify the physician and prepare for emergent treatment (IV calcium, insulin + dextrose, bicarbonate if indicated) and expedite dialysis.
D. Increase dietary potassium restriction and observe.

Answer: C.
Explanation: Serum potassium ≥6.5 mmol/L is potentially life-threatening even if asymptomatic; prompt treatment is required to stabilize the myocardium and shift potassium intracellularly while arranging definitive removal (urgent dialysis). Initial measures include IV calcium (to stabilize cardiac membranes), IV insulin with dextrose to drive potassium into cells, nebulized/inhaled beta-agonists if available, and IV sodium bicarbonate in certain acidotic patients. Sodium polystyrene sulfonate works slowly and is not appropriate as sole urgent therapy. Observing or delaying dialysis risks conduction abnormalities and sudden cardiac events.

For erythropoiesis-stimulating agent (ESA) therapy in CKD patients, which statement best reflects current best practice for hemoglobin targets?

A. Target Hb 13.5–14.5 g/dL in all CKD patients to improve fatigue.
B. Avoid raising hemoglobin above 10–11 g/dL in most patients due to thrombotic and cardiovascular risk.
C. ESA therapy should be given only if Hb <6 g/dL.
D. No target exists; maintain Hb as high as patient prefers.

Answer: B.
Explanation: Current guidelines recommend individualized ESA use and generally advise avoiding routine hemoglobin targets above 10–11 g/dL in CKD patients because higher targets have been linked to increased risk of stroke, hypertension, thrombosis, and adverse cardiovascular events in randomized trials. The goal is to reduce transfusion needs and improve symptoms while balancing risks. Targets above 13 g/dL are discouraged. ESA initiation and titration should consider symptoms, comorbidities, iron status, and shared decision-making rather than arbitrary high Hb goals.

A patient with chronic kidney disease stage 4 has persistently elevated phosphate despite dietary measures. Which medication class is first-line for phosphate control when diet alone is insufficient?

A. Proton pump inhibitors.
B. Calcium-based phosphate binders or non-calcium binders based on individual risk.
C. Loop diuretics.
D. ACE inhibitors.

Answer: B.
Explanation: Phosphate binders are the cornerstone of hyperphosphatemia management when dietary restriction alone is inadequate. Choices include calcium-containing binders (e.g., calcium acetate) and non-calcium binders (e.g., sevelamer, lanthanum carbonate). Selection depends on calcium balance, vascular calcification risk, and other clinical factors. Overuse of calcium binders can contribute to hypercalcemia and vascular calcification, so non-calcium agents may be preferred in patients with hypercalcemia or high calcification risk. PPIs, diuretics, and ACE inhibitors do not effectively lower serum phosphate.

Which acid-base disturbance is most likely in a patient with vomiting from uremic gastroparesis and metabolic alkalosis?

A. Metabolic acidosis with high anion gap.
B. Metabolic alkalosis with hypochloremia and hypokalemia.
C. Respiratory acidosis due to hypoventilation.
D. Normal anion gap metabolic acidosis.

Answer: B.
Explanation: Protracted vomiting causes loss of gastric hydrogen and chloride, producing a metabolic alkalosis characterized by increased bicarbonate, hypochloremia, and often hypokalemia (as potassium shifts intracellularly to maintain electroneutrality and renal mechanisms conserve HCO3−). In CKD or uremic patients, other acid-base disorders can coexist, but the classic profile after vomiting is metabolic alkalosis with low chloride and low potassium. Recognizing the pattern helps guide replacement strategies (fluids, chloride administration, potassium correction) and careful dialysis planning if needed.

Which sign on hemodialysis machine monitoring suggests a clotting problem in the extracorporeal circuit?

A. Gradual rise in venous pressure with decreased blood flow.
B. Stable pressures with adequate blood flow.
C. Low arterial pressure readings with increasing transmembrane pressure.
D. Decrease in ultrafiltration rate only.

Answer: A.
Explanation: Clotting in the extracorporeal circuit often presents as a rising venous pressure (due to downstream obstruction) with associated inability to maintain prescribed blood flow despite pump speed adjustments. The nurse should check connections, line kinks, needle position, anticoagulation status, and consider adjusting systemic anticoagulation per protocol. Increasing transmembrane pressure may reflect membrane fouling or clotting on the dialyzer, but the combination of rising venous pressures and diminished blood flow is a classic sign of circuit clotting. Prompt recognition prevents loss of circuit and patient blood.

A renal transplant recipient on tacrolimus presents with tremor, hypertension, and rising creatinine. Tacrolimus level is elevated. Which is the most likely cause and appropriate nursing action?

A. Nonadherence—encourage patient to take more tacrolimus.
B. Tacrolimus nephrotoxicity; notify transplant team to adjust dose and review interacting medications (e.g., macrolides, azoles).
C. Acute rejection; immediately start high-dose steroids.
D. Dehydration; give IV fluids only.

Answer: B.
Explanation: Tacrolimus toxicity manifests with neurotoxicity (tremor), hypertension, and nephrotoxicity leading to rising creatinine; elevated drug levels are a key clue. The nurse should notify the transplant/nephrology team promptly to adjust the dose and evaluate for drug–drug interactions (several azole antifungals, macrolide antibiotics, and grapefruit can raise tacrolimus levels). While rejection is a differential for rising creatinine, the constellation of elevated tacrolimus level with tremor and hypertension points to toxicity. Treating as dehydration alone or encouraging increased dosing would worsen toxicity.

Which statement about dialysis disequilibrium syndrome (DDS) is correct and useful for prevention?

A. DDS is caused by rapid removal of urea causing cerebral edema; prevent with shorter, high-efficiency dialysis.
B. DDS occurs only in peritoneal dialysis.
C. DDS risk is highest during initial dialysis of patients with severe azotemia; prevention includes gentle initiation with lower blood flow and ultrafiltration.
D. DDS is benign and requires no intervention.

Answer: C.
Explanation: Dialysis disequilibrium syndrome results from rapid extracellular urea removal relative to brain urea, producing osmotic shifts and cerebral edema, and is most likely during the first treatments in patients with very high starting BUN. Preventive measures include gentler initial dialysis—shorter duration with lower blood flow and slower urea removal (lower dialyzer efficiency and limited ultrafiltration) or use of CRRT in very unstable patients. It is not limited to PD, and it is not benign—symptoms can range from headache and nausea to seizures and coma, so prevention and prompt treatment are essential.

A patient on peritoneal dialysis receives gentamicin intraperitoneally for peritonitis. Which monitoring is most important for potential adverse effects?

A. Serum calcium and phosphate.
B. Serum aminoglycoside trough levels and renal function (creatinine).
C. Hemoglobin only.
D. Serum bicarbonate.

Answer: B.
Explanation: Aminoglycosides (e.g., gentamicin) are nephrotoxic and ototoxic; even when administered intraperitoneally, systemic absorption can occur, particularly with inflamed peritoneum. Monitoring trough serum levels helps prevent toxicity, and renal function should be tracked closely to adjust dosing. Hemoglobin and electrolytes have other roles but are not specific for aminoglycoside toxicity. Careful dosing, therapeutic drug monitoring, and awareness of cumulative exposure are essential for patient safety during PD peritonitis treatment.

Which is the most appropriate fluid prescription goal for a hypotensive inpatient with AKI on continuous renal replacement therapy (CRRT)?

A. Achieve net negative fluid balance of 2–3 L/hour.
B. Maintain hemodynamic stability with minimal or zero net ultrafiltration initially and adjust based on response.
C. Always remove 50 mL/hr regardless of blood pressure.
D. Discontinue CRRT and place patient on intermittent hemodialysis.

Answer: B.
Explanation: In hypotensive, hemodynamically unstable patients, CRRT is often used because it offers gentle, continuous solute and fluid removal. The initial goal is to maintain stability—often with minimal or zero net ultrafiltration—while correcting underlying causes and slowly adjusting fluid removal as tolerated. Aggressive fluid removal may worsen hypotension and organ perfusion. The prescription should be individualized, with frequent reassessment of hemodynamics, vasopressor support, and organ perfusion markers. Discontinuing CRRT in favor of intermittent HD may be poorly tolerated in unstable patients.

A patient with CKD has severe secondary hyperparathyroidism. Which lab and clinical features are consistent with this condition?

A. Low PTH, hypercalcemia, low phosphate.
B. Elevated PTH, hypocalcemia or normocalcemia, elevated phosphate, bone pain, pruritus.
C. Elevated PTH but no bone or mineral abnormalities.
D. Low phosphate, low PTH, anemia.

Answer: B.
Explanation: Secondary hyperparathyroidism in CKD is driven by phosphate retention, hypocalcemia (or in some cases normal calcium), and decreased calcitriol production, leading to chronically elevated parathyroid hormone (PTH). Clinical features include bone pain, pruritus from retained phosphorus and calcium-phosphate deposition, vascular calcifications, and laboratory findings of elevated phosphate, elevated PTH, and variable calcium depending on binder use and vitamin D therapy. Management includes phosphate control, vitamin D analogs, calcimimetics, and sometimes parathyroidectomy.

Which teaching point is most important for a patient starting home hemodialysis regarding vascular access self-care?

A. Use antiseptic ointment daily inside the needle hub.
B. Avoid showering or swimming forever.
C. Inspect access site daily for redness, swelling, warmth, drainage, or changes in thrill/bruit and report promptly.
D. It is safe to take blood pressure on the access arm.

Answer: C.
Explanation: Patients on home hemodialysis must be taught to inspect their vascular access daily for signs of infection (redness, warmth, drainage), stenosis (changes in thrill or bruit), and to report any issues immediately. Proper hygiene, secure needle fixation, and avoiding blood pressure measurements or venipuncture on the access extremity are key but daily inspection and reporting are central to early detection of access problems. Antiseptic ointment inside the hub is not routinely recommended without specific protocol, and bathing/showering practices are often permitted with proper care; lifelong avoidance of water activities is not necessary with appropriate precautions.

A 45-year-old dialysis patient with diabetes presents with hyperglycemia and hyperkalemia after a missed insulin dose. Which strategy will best lower serum potassium acutely while also addressing hyperglycemia?

A. IV calcium gluconate only.
B. IV insulin with dextrose and consider emergent dialysis if refractory, plus calcium if ECG changes.
C. Sodium polystyrene sulfonate only.
D. Oral potassium supplements.

Answer: B.
Explanation: IV insulin with glucose is a rapid and effective method to shift potassium into cells and concurrently lowers blood glucose when given with dextrose, addressing both acute hyperkalemia and hyperglycemia resulting from missed insulin. If ECG changes appear, IV calcium gluconate is used to stabilize cardiac membranes but does not lower potassium. Sodium polystyrene sulfonate works slowly and is not first-line for acute severe hyperkalemia. Emergent dialysis is required if hyperkalemia is refractory or if the patient is anuric/has severe levels with ECG changes.

Which vaccination is specifically recommended for most patients with CKD or those on dialysis due to higher risk of severe disease?

A. HPV vaccine only.
B. Hepatitis B vaccination and annual influenza vaccination.
C. Live attenuated intranasal influenza vaccine.
D. No vaccinations are recommended because of immunosuppression.

Answer: B.
Explanation: Patients with CKD and those on dialysis have higher risk for infectious complications; hepatitis B vaccination is strongly recommended for dialysis patients because of potential blood exposures and immune compromise, with post-vaccine serology monitoring. Annual inactivated influenza vaccine is also recommended. Live vaccines are generally contraindicated in severely immunocompromised patients, and “no vaccinations” is incorrect. Other recommended vaccines include pneumococcal vaccination per guidelines. Vaccination planning and documentation is a key nursing role in nephrology care.

In a patient with suspected acute rejection of a transplanted kidney, which finding is most suggestive of antibody-mediated rejection (AMR)?

A. Gradual increase in creatinine over months without proteinuria.
B. New onset of heavy proteinuria and donor-specific antibodies with C4d staining on biopsy.
C. Decreased blood pressure only.
D. Low tacrolimus level without other signs.

Answer: B.
Explanation: Antibody-mediated rejection is characterized by the presence of donor-specific antibodies, often abrupt graft dysfunction including heavy proteinuria and rising creatinine, and histologic evidence such as peritubular capillary C4d deposition on biopsy. AMR requires prompt immunologic therapies (plasmapheresis, IVIG, rituximab, etc.) depending on severity. Tacrolimus underdosing can cause rejection but presence of donor-specific antibodies and C4d is classic for AMR. Recognizing AMR is critical because treatments differ from cellular rejection.

Which electrolyte abnormality is most classically associated with tumor lysis syndrome in a patient with rapidly proliferating malignancy?

A. Hypokalemia and hypophosphatemia.
B. Hyperkalemia, hyperphosphatemia, hyperuricemia, and hypocalcemia.
C. Hyponatremia only.
D. Hypermagnesemia only.

Answer: B.
Explanation: Tumor lysis syndrome releases intracellular contents en masse—potassium and phosphate—leading to hyperkalemia and hyperphosphatemia; phosphate binds calcium causing secondary hypocalcemia; rapid nucleic acid breakdown raises uric acid (hyperuricemia), which can precipitate in renal tubules and worsen AKI. These metabolic derangements can precipitate arrhythmias and acute kidney injury requiring aggressive fluid resuscitation, uric acid–lowering therapy (e.g., rasburicase), and sometimes renal replacement therapy. Recognizing and preventing TLS in high-risk patients is essential.

A dialysis patient’s bruit over the AV fistula becomes markedly weaker and thrill is diminished. What is the likely cause and immediate nursing priority?

A. Patient hydrated; no action needed.
B. Thrombosis or stenosis of the access; notify vascular surgery/vascular access team and prepare for emergent evaluation.
C. Infection only; start oral antibiotics.
D. Normal variation; reschedule dialysis.

Answer: B.
Explanation: A sudden decrease or loss of bruit and thrill in an AV fistula strongly suggests thrombosis or severe stenosis of the access. This is an access emergency because it can lead to loss of the fistula and increased morbidity. The nurse should notify the vascular access team or surgeon immediately, assess for limb ischemia, avoid further needle cannulation, and prepare for emergent evaluation (e.g., ultrasound, possible declotting). Infection may alter flow but is less likely to cause acute loss of thrill. Waiting or rescheduling risks permanent access loss.

When educating a CKD patient about medication dosing, which statement is most accurate?

A. All medications are dose-reduced the same way in CKD.
B. Drug dosing adjustments depend on the specific medication’s renal clearance, dialysis removal characteristics, and residual renal function.
C. There is no need to adjust any medication for patients on dialysis.
D. Antibiotics never need dose adjustment in CKD.

Answer: B.
Explanation: Drug dosing in CKD and dialysis is complex and individualized. Adjustments depend on the medication’s reliance on renal clearance, molecular weight, protein binding, and whether it is removed by dialysis (which requires timing and dose changes). Residual renal function and dialysis modality affect dosing decisions. Blanket dose reductions are inappropriate; clinicians must consult dosing guidelines, pharmacy resources, and consider therapeutic drug monitoring where available. Many antibiotics and other drugs do require adjustment in renal impairment.

A patient on hemodialysis develops sudden shortness of breath and chest pain 30 minutes into treatment. SpO2 is 85% and lung auscultation reveals crackles. Which complication is most likely and what is the immediate nursing response?

A. Air embolism; place patient in Trendelenburg and left lateral decubitus position and clamp lines.
B. Volume overload or pulmonary edema from inadequate ultrafiltration; stop ultrafiltration, give oxygen, and notify physician for possible urgent dialysis modification.
C. Anaphylaxis from dialyzer; give oral antihistamine only.
D. Pulmonary embolism from DVT.

Answer: B.
Explanation: Acute pulmonary edema during dialysis most commonly reflects volume overload (if UF was inadequate earlier) or rapid fluid shifts; however, if UF had been excessive, hypotension would be more likely. In the setting of dyspnea with crackles and hypoxia, immediate steps include stopping ultrafiltration (or dialysis if instability), administering supplemental oxygen, positioning upright, and notifying the physician for urgent assessment and possible modification of dialysis prescription or admission. Air embolism and anaphylaxis have different signs (neurologic changes, hypotension, rash), and PE is less likely to present acutely during dialysis without other risk features.

Which of the following is the best indicator of nutritional status and protein-energy wasting in long-term dialysis patients?

A. Serum albumin alone as an absolute measure.
B. A multimodal assessment including dietary intake history, serum albumin trend, prealbumin, weight changes, and inflammation markers.
C. BMI only.
D. Serum creatinine only.

Answer: B.
Explanation: Protein-energy wasting in dialysis patients is multifactorial and requires a comprehensive assessment. While low serum albumin is associated with poor outcomes, it is influenced by inflammation, hydration, and other factors, so trends are more informative than a single value. Prealbumin, dietary intake assessment, unintentional weight loss, muscle wasting, and inflammatory markers (e.g., CRP) provide context. BMI alone misses muscle vs fat loss; serum creatinine reflects muscle mass but is affected by dialysis clearance. Therefore, a multimodal assessment is best for accurate nutritional evaluation and tailored interventions.

Which statement about bicarbonate concentration in dialysate is correct?

A. Standard dialysate bicarbonate is 5 mEq/L.
B. Dialysate bicarbonate is tailored to correct metabolic acidosis in dialysis patients, and abrupt large swings can cause disequilibrium or hemodynamic effects.
C. Dialysate bicarbonate does not affect patient acid-base status.
D. Increasing dialysate bicarbonate is the first step for treating sepsis.

Answer: B.
Explanation: Dialysate bicarbonate is formulated to help correct the chronic metabolic acidosis of dialysis patients; typical concentrations vary (commonly around 32–38 mEq/L depending on system and prescription). Abrupt or excessive correction can cause symptoms and altered vascular tone; individualized prescription based on pre-dialysis bicarbonate and patient tolerance is necessary. Dialysate bicarbonate affects acid-base balance directly and is not a sepsis treatment. Understanding and adjusting bicarbonate helps manage symptoms, bone health, and overall metabolic milieu.

A hemodialysis patient has a persistent low-grade fever and purulent drainage from the catheter exit site. Culture grows Staphylococcus aureus. What is the recommended management approach?

A. Ignore—exit site colonization is always benign.
B. Remove the catheter and treat with systemic antibiotics; consider temporary hemodialysis access and evaluate for tunnel/line infection.
C. Apply topical antibiotic only.
D. Increase dialysate flow.

Answer: B.
Explanation: S. aureus growth with systemic signs or purulent drainage at a catheter site suggests exit site or tunnel infection that can lead to bacteremia and metastatic complications. Management generally includes catheter removal and systemic antibiotic therapy guided by culture, with temporary alternative access (e.g., femoral catheter) as needed. Leaving an infected catheter risks persistent bacteremia and endocarditis. Topical therapy alone is insufficient for S. aureus with purulence. Prompt, aggressive management is critical to prevent severe outcomes.

A patient undergoing dialysis asks about contraceptive choices. Which advice is most appropriate for reproductive-age women on dialysis?

A. All contraceptives are contraindicated.
B. Counsel on options; consider that combined hormonal contraceptives may carry higher thrombotic risk—individualize choice, consider progestin-only methods or IUDs after assessing comorbidities.
C. Only barrier methods work in dialysis patients.
D. Contraception is unnecessary because dialysis prevents pregnancy.

Answer: B.
Explanation: Reproductive counseling is essential for women on dialysis. Contraceptive choice must be individualized considering comorbidities, thrombosis risk, bone health, and medications. Combined estrogen-containing contraceptives increase thrombotic risk and may be less desirable in some CKD patients; progestin-only pills, long-acting reversible contraceptives (LARCs) like IUDs or implants, or barrier methods may be considered. Nephrology nurses should support counseling and coordinate with gynecology for safe options. Dialysis does not reliably prevent pregnancy, and pregnancies on dialysis are high risk.

Which floor nurse action best reduces the risk of bloodstream infection in patients with central venous dialysis catheters?

A. Routine dressing changes weekly regardless of soiling.
B. Strict aseptic technique during dressing changes, chlorhexidine skin prep, and catheter hub disinfection before each access.
C. Using only sterile water for cleaning skin.
D. Never flushing the catheter between uses.

Answer: B.
Explanation: Preventing catheter-related bloodstream infections requires strict adherence to aseptic technique, use of appropriate antiseptics (chlorhexidine for skin prep), sterile dressings, and disinfecting catheter hubs (scrubbing the hub) before connection. Evidence supports chlorhexidine and standardized insertion and maintenance bundles to reduce infections. Routine weekly dressing changes without regard to contamination are insufficient; frequency depends on manufacturer and institutional policy. Flushing catheters per protocol prevents occlusion and maintains patency—so “never flush” is unsafe.

Which medication requires cautious dosing and frequent monitoring in CKD due to accumulation of active metabolites leading to prolonged effects?

A. Lithium.
B. Morphine (and active metabolites) — use caution or prefer alternatives (e.g., fentanyl) in severe CKD.
C. Metformin in ESRD—always safe.
D. Allopurinol never needs adjustment.

Answer: B.
Explanation: Many opioids have renally excreted active metabolites (e.g., morphine-6-glucuronide) that accumulate in CKD, causing prolonged sedation and respiratory depression; therefore, morphine should be used cautiously or avoided in advanced CKD, favoring agents with safer renal profiles (e.g., fentanyl, hydromorphone with dose adjustments and monitoring). Lithium is also renally excreted and requires monitoring, but the question highlights opioid metabolites. Metformin is contraindicated or requires caution in advanced CKD/ESRD due to lactic acidosis risk. Allopurinol dosing often requires adjustment.

Which criterion most strongly supports initiation of renal replacement therapy in acute kidney injury?

A. Creatinine rising from 1.0 to 1.2 mg/dL.
B. Refractory hyperkalemia, severe metabolic acidosis, refractory volume overload causing pulmonary edema, or uremic complications (pericarditis, encephalopathy).
C. Mild fatigue only.
D. Low urine output for 2 hours irrespective of other findings.

Answer: B.
Explanation: Indications for initiating RRT in AKI include life-threatening complications such as refractory hyperkalemia, severe metabolic acidosis despite medical measures, refractory volume overload causing pulmonary edema, or uremic complications like pericarditis or encephalopathy. Small creatinine rises or transient oliguria without these complications do not mandate immediate RRT. Decisions should be individualized based on clinical status, labs, and trajectory. Recognizing absolute and relative indications prevents delays in necessary renal support.

A dialysis nurse notices a patient’s pre-dialysis blood pressure is 220/120 mmHg with headache and visual changes. What is the most appropriate immediate course?

A. Proceed with routine dialysis and reassess afterwards.
B. Treat as hypertensive emergency: contact physician urgently, consider intravenous antihypertensives per protocol, stabilize and monitor closely; urgent dialysis may be required once stabilized.
C. Give oral antihypertensive and send home.
D. Withhold all antihypertensives to avoid hypotension during dialysis.

Answer: B.
Explanation: Severe hypertension with end-organ symptoms (headache, visual changes) represents a hypertensive emergency requiring immediate evaluation and IV antihypertensives per protocol and urgent physician notification. While dialysis can lower BP, initiating dialysis without stabilizing the patient can be unsafe and may not address acute neurologic/end-organ ischemia; urgent dialysis might be considered after stabilization if indicated. Oral meds and sending home are inappropriate in an emergency. Withholding antihypertensives arbitrarily risks ongoing end-organ damage.