Renal Failure and Dialysis PNLE Questions
Introduction
The live published-question count for this page is 37 original Tangerine PNLE-style practice questions. The inventory was last updated August 12, 2026. These are practice items, not actual, recalled, or leaked board questions.
This NP4: Medical-Surgical lens covers acute kidney injury, chronic kidney disease, hemodialysis, peritoneal dialysis, dialysis access, and complications of renal replacement therapy. Learners practice identifying the likely renal problem, interpreting fluid and renal-function trends, protecting access, recognizing deterioration, and selecting the safest priority response. General urinary or infectious disorders are outside this page unless directly connected to renal failure or dialysis care.
The 2025 Enhanced TOS provides broad competency groupings for the official five-subject PNLE TOS. Renal Failure and Dialysis is a Tangerine pedagogical lens mapped across relevant competencies, not a separate official test subject. The TOS does not establish a guaranteed weight for this microtopic, so use the inventory to sharpen decisions rather than to predict an exam-form count.
Key concepts
- Classify the acute kidney injury pattern
Recognize: Time course, perfusion changes, possible intrinsic renal injury, and evidence of postrenal obstruction help frame the problem.
Decide: Link the assessment cue to the likely cause, then prioritize correction of danger and further assessment.
Avoid: Labeling every episode of oliguria as dehydration without checking the full clinical context. - Interpret fluid balance as a trend
Recognize: Intake and output, daily weight, edema, lung findings, blood pressure, and mental status provide related clues.
Decide: Compare changes over time and connect them with the prescribed fluid plan and renal function.
Avoid: Relying on urine output alone or waiting for severe edema before escalating concern. - Connect chronic kidney disease with systemic effects
Recognize: CKD may be associated with fluid and electrolyte problems, hypertension, and anemia related in part to reduced erythropoietin production.
Decide: Use the long-term treatment plan, assessment findings, and laboratory trends to guide teaching and referral.
Avoid: Treating one abnormal finding as proof of a single cause. - Protect hemodialysis access
Recognize: Inspect the access site and assess for a bruit and thrill, bleeding, swelling, pain, or infection signs.
Decide: Protect the access limb, report a new absent or changed thrill promptly, and follow local access-care procedures.
Avoid: Unnecessary pressure, trauma, blood pressure measurement, or venipuncture on the access limb. - Evaluate peritoneal dialysis exchanges
Recognize: The peritoneal membrane supports exchange through a catheter; flow, drainage, effluent appearance, and abdominal symptoms are important cues.
Decide: Maintain aseptic technique, assess poor outflow systematically, and escalate cloudy or abnormal effluent and concerning symptoms.
Avoid: Calling cloudy effluent an expected finding or correcting a drainage problem without checking the setup and protocol. - Prioritize renal replacement complications
Recognize: Hypotension, cramping, bleeding, infection signs, electrolyte shifts, and new neurologic changes can occur during or after dialysis care.
Decide: Stop routine teaching, assess immediately, and follow the dialysis protocol for treatment changes and escalation.
Avoid: Assuming a new or worsening symptom is a harmless expected effect. - Individualize advanced kidney disease teaching
Recognize: Protein, fluid, and other nutrition decisions depend on renal function, current treatment, symptoms, and the interprofessional plan.
Decide: Reinforce the individualized prescription and explain why treatment status can change the plan.
Avoid: Applying one blanket protein or fluid rule to every person with kidney disease.
What to expect on the PNLE
The 37-item inventory supports practice with cause-and-cue identification, mechanism explanation, trend interpretation, priority nursing action, and complication response. A stem may require the learner to distinguish prerenal, intrinsic, and postrenal patterns, explain how peritoneal dialysis works, identify a concerning access finding, or connect CKD with anemia and fluid problems.
The live difficulty distribution is easy 8, medium 17, and hard 12. Its Bloom distribution is remembering 7, understanding 8, applying 12, analyzing 5, and evaluating 5, so the inventory supports movement from recalling dialysis principles to using findings in a clinical decision and judging which response is safest.
- Remembering: Retrieve terms, access features, and basic dialysis mechanisms.
- Understanding: Explain why renal failure produces a finding or why a modality uses a particular exchange pathway.
- Applying: Select an action from a focused assessment cue.
- Analyzing and evaluating: Compare competing explanations, interpret trends, and rank responses by urgency and safety.
Exact topic distribution varies by exam form. The 2025 Enhanced TOS assigns broad competencies rather than a guaranteed microtopic quota, so prepare to transfer these decisions across the official five-subject PNLE TOS.
Study tips
- Start with diagnostic practice.
Work through the 37-item inventory as a baseline. For every missed or guessed item, record the decision involved, such as cause classification, fluid interpretation, access protection, or complication response. - Use focused retrieval by scope.
Study AKI, CKD, hemodialysis, peritoneal dialysis, access care, and renal replacement complications in separate passes. Retrieve the cue, the nursing interpretation, and the priority action before checking the answer. - Review rationales and errors actively.
For each error, write four links: clinical cue, meaning, safest action, and why the tempting alternative is less safe. Include adjacent electrolyte concepts only when they change the renal or dialysis decision. - Retry with a self-made comparison grid.
Draw columns for modality, exchange pathway, access or effluent cue, and priority response. Fill in: Hemodialysis, extracorporeal circuit and vascular access, access or neurologic cues; Peritoneal dialysis, peritoneal membrane and catheter, drainage or effluent cues. - Finish with mixed timed practice.
Interleave AKI, CKD, access, hemodialysis, and peritoneal dialysis items under a planned time limit. Review the reasoning after the set, then schedule missed decisions for spaced retry in a later study session.
Common mistakes to avoid
- Assigning every AKI case to dehydration.
Perfusion loss is only one possible pattern. The correcting cue is to assess for intrinsic injury and postrenal obstruction, then match the priority action to the evidence. - Using urine output as the only fluid-balance measure.
Renal dysfunction can produce dangerous accumulation even when one output measurement seems reassuring. Compare intake and output with weight, lung findings, edema, blood pressure, and mental status. - Reading a single creatinine result without context.
A single value does not show the direction of change or the person’s baseline. Use trends, time course, urine findings, and the overall assessment before deciding that renal function is improving or worsening. - Handling an access limb like an ordinary limb.
Pressure or puncture can threaten the access. Protect the limb, inspect the site, assess the bruit and thrill according to procedure, and report a new absent or changed thrill promptly. - Accepting cloudy peritoneal dialysis effluent as normal.
Effluent appearance is a safety cue. Cloudiness or accompanying abdominal symptoms requires prompt assessment and escalation for possible dialysis-related infection according to protocol. - Normalizing new symptoms during dialysis.
Hypotension, bleeding, infection signs, or new neurologic changes require immediate assessment. Follow the dialysis response protocol rather than allowing routine completion to delay escalation.
Try a question
A real Renal Failure and Dialysis question from our bank. Give it a shot.
A patient with a history of heart failure is admitted with decreased urine output. The nurse recognizes that heart failure can lead to which type of kidney injury?
Heart failure commonly leads to decreased cardiac output, meaning less blood is pumped to vital organs—including the kidneys. When the kidneys receive less blood flow, their ability to filter waste and regulate fluid/electrolyte balance diminishes. This is called prerenal failure, a form of acute kidney injury caused by hypoperfusion without intrinsic kidney damage.
Why B is correct (Prerenal failure due to poor blood flow):
In heart failure, the failing heart can’t maintain adequate systemic perfusion. As a result, the renal arteries receive less blood. Prerenal acute kidney injury (AKI) develops because the glomeruli do not have enough pressure to filter blood, leading to decreased urine output (oliguria). Importantly, the kidney tissue itself is initially undamaged—renal function can improve if perfusion is restored quickly. Early identification and intervention are critical.
Why the other options are incorrect:
| Option | Why It Is Incorrect |
|---|---|
| A. Renal failure from nephrotoxic drugs | Nephrotoxic drug-induced renal failure is classified as intrinsic (or intrinsic renal) failure, not prerenal. Here, the kidney tissue is directly damaged (e.g., by aminoglycosides or NSAIDs), which is a different mechanism from the low perfusion seen in heart failure. |
| C. Postrenal failure from urinary tract obstruction | Postrenal failure results from blockage (such as stones or enlarged prostate) that prevents urine excretion. Heart failure does not cause such obstructions. |
| D. Intrinsic renal failure from glomerulonephritis | Intrinsic renal failure involves direct damage to the kidney's filtering units, such as in glomerulonephritis (immune-mediated inflammation). This isn’t linked to decreased cardiac output or heart failure, but to primary renal disease. |
Clinical Reasoning and Nursing Pearls:
- Always assess urine output in heart failure patients as a sensitive indicator of renal perfusion.
- Think "pre-renal” for any cause where the problem is upstream (shock, heart failure, dehydration) and kidneys are structurally intact.
- Remember: Prerenal = Perfusion problem ("P" for Pre, "P" for Perfusion).
Relevant Pathophysiology: Low cardiac output causes renal hypoperfusion, triggers RAAS activation, and further worsens fluid overload. Identifying prerenal versus intrinsic/postrenal causes guides appropriate interventions, such as fluid management or addressing the underlying cardiac function.
Knowing these distinctions allows nurses to apply clinical judgment and anticipate complications, supporting evidence-based, patient-centered care.
- Silvestri, L. A. (2017). Saunders Comprehensive Review for the NCLEX-RN Examination (7th ed.). Elsevier.
More Renal Failure and Dialysis questions
37 questions available. Sign up to practice all of them.
A client with end-stage renal disease is started on continuous ambulatory peritoneal dialysis (CAPD). What is the primary mechanism by which this therapy removes toxins from the body?
A client with nephritic syndrome has red blood cell casts. What do the casts signify?
A client with pyelonephritis has fever, flank pain, and white blood cell casts. Why do casts indicate upper urinary tract involvement?
References and further reading
- PRC Enhanced Table of Specifications for the Nurses Licensure Examination official
The current public competency and cognitive-level blueprint, effective from the November 2025 NLE onward. - Tangerine Prep PNLE Reviewer question bank
The live source for the published question count, question previews, rationales, and inventory distributions on this page.
How this page is built
The counts and distributions on this page come from Tangerine Prep's live published question bank. The source inventory was last updated on August 12, 2026.
The questions are original PNLE-style practice items, not recalled or leaked board questions. Topic scope follows Tangerine's pedagogical taxonomy and is mapped to the PRC 2025 Enhanced Table of Specifications, effective from the November 2025 NLE onward. Exact topic distribution varies by exam form.