NGN Sepsis Unfolding Case Study: Six NCLEX-RN Clinical Judgment Questions With Answers

Introduction

Next Generation NCLEX (NGN) unfolding case studies challenge nursing candidates to interpret patient information as a clinical situation develops. The questions assess more than factual recall: candidates must recognize deterioration, connect findings, identify urgent problems, plan safe interventions, act appropriately and evaluate treatment responses.

This original Medline Academy® educational case follows a 57-year-old adult with an infected obstructing ureteral stone. The patient initially presents with fever and urinary symptoms, develops worsening tissue hypoperfusion and ultimately requires antibiotics, intravenous fluid resuscitation, norepinephrine and urgent urinary drainage.

The six questions follow the NCSBN Clinical Judgment Measurement Model (NCJMM):

Educational simulation disclaimer: This is a fictional, independently developed NGN-style practice case. It is not an actual NCLEX examination question, an NCSBN sample item, a recalled examination item or a prediction of questions on a future examination. Clinical management is presented for nursing education; real patient care requires individual assessment, authorized orders, institutional protocols and qualified clinical judgment.

Patient Profile and Initial Clinical Presentation

Patient: Ms. R, a 57-year-old woman
Actual body weight: 74 kg
Location: Emergency department
Relevant history: Type 2 diabetes mellitus and hypertension
Baseline serum creatinine: 0.8 mg/dL
Allergies: No known medication allergies
Presenting complaints: Fever, chills, painful urination, right-sided flank pain, nausea and repeated vomiting.

The patient’s daughter reports that symptoms began three days ago. The patient became progressively weaker overnight and has had difficulty concentrating since this morning.

At 08:00, the patient appears acutely ill, febrile and dehydrated. She answers some questions slowly. Examination reveals right costovertebral angle tenderness.

The emergency team begins evaluating for a serious urinary infection and possible sepsis.

Initial Investigations

Laboratory results reveal leukocytosis, an elevated serum lactate and a new increase in creatinine. Urinalysis is positive for nitrites, leukocyte esterase and numerous white blood cells.

A noncontrast CT scan identifies a 7-mm obstructing right proximal ureteral stone with hydronephrosis and surrounding inflammatory changes.

The combination raises concern for an infected, obstructed upper urinary tract with systemic organ dysfunction.

Complete Unfolding Case Data Table

The table shows how this fictional patient’s condition changes over approximately five and a half hours.

Data interpretation: Laboratory values and hemodynamic measurements are fictional but physiologically plausible. Some investigations have not been repeated at every time point. An unchanged entry should never be assumed when no new measurement exists.

Clinical Timeline

08:00–09:10 — Initial resuscitation: The nurse promptly escalates concern for sepsis. IV access is obtained, blood and urine cultures are collected, lactate is measured and prescribed empiric IV antibiotics are started at 08:35. Balanced crystalloid resuscitation begins with frequent reassessment. The CT result prompts urgent urology consultation.

09:40 — Clinical deterioration: Despite approximately 1.1 L of IV crystalloid, the patient becomes more hypotensive and drowsy. Urine output remains low, perfusion is poor and repeat lactate increases to 4.6 mmol/L.

10:30 — Persistent circulatory failure: The patient has received approximately 2.25 L of crystalloid. Repeat assessment does not reveal pulmonary edema, but hypotension persists. The emergency/critical care provider prescribes norepinephrine, titrated according to the patient’s monitored blood pressure and institutional protocol.

10:45 — Hemodynamic rescue: Norepinephrine has been started. The MAP increases above 65 mmHg. The patient continues receiving antibiotics, close monitoring and preparation for source control.

11:45 — Source control: Following team assessment and hemodynamic support, the urology service places a ureteral stent to drain the infected, obstructed collecting system. Definitive removal of the stone is deferred until the infection resolves.

13:30 — Reassessment: Lactate, urine output, peripheral perfusion and mental status improve. However, creatinine is higher and the patient continues to require norepinephrine.

Question 1 — Recognize Cues

NGN item type: Select All That Apply

Patient information available: Initial emergency department assessment through 09:10.

The nurse reviews the patient’s findings. Which findings are most concerning for systemic hypoperfusion or acute organ dysfunction rather than simply identifying the urinary source of infection?

Select all that apply.

A. New-onset difficulty concentrating and altered orientation.

B. Serum lactate of 3.8 mmol/L.

C. Serum creatinine of 1.7 mg/dL compared with a baseline of 0.8 mg/dL.

D. Urine output of 12 mL during the first monitored hour.

E. Blood pressure decreasing to 90/54 mmHg.

F. A history of appendectomy 15 years ago without complications.

G. Right costovertebral angle tenderness indicating a possible urinary source.

Correct Answers: A, B, C, D and E

Individual Rationales

A — Correct. Acute alteration in mental status is an important manifestation of possible cerebral dysfunction or poor perfusion in a patient with suspected infection. Other causes remain possible and must be considered.

B — Correct. Elevated lactate may support concern about impaired perfusion or physiological stress. It is not specific for sepsis, and an elevated value alone does not establish septic shock.

C — Correct. The substantial rise in creatinine suggests acute kidney injury, particularly when considered alongside hypotension, infection and oliguria.

D — Correct. The output is approximately 0.16 mL/kg/hour for a 74-kg adult, significantly below the commonly used 0.5 mL/kg/hour threshold. Persistent oliguria requires urgent investigation.

E — Correct. A falling blood pressure, even before the MAP drops below 65 mmHg, is concerning when accompanied by elevated lactate and signs of organ dysfunction.

F — Incorrect. An uncomplicated remote appendectomy does not explain the current systemic deterioration.

G — Incorrect for this specific question. Costovertebral angle tenderness helps identify a urinary source of infection, but it does not independently demonstrate systemic hypoperfusion or organ dysfunction.

Clinical reasoning principle: Distinguish findings that identify the suspected infection source from findings suggesting the infection is causing systemic organ dysfunction.

Question 2 — Analyze Cues

NGN item type: Matrix Grid — Select One Response in Each Row

New information: The CT confirms a 7-mm obstructing right ureteral calculus with hydronephrosis. Urinalysis is positive for nitrites and pyuria.

The nurse must interpret combinations of findings rather than consider each laboratory value in isolation.

For each finding, select the single most appropriate interpretation.

Correct Answers

Individual Rationales

Finding 1: Imaging confirms obstruction, while urinary inflammation, fever and flank symptoms support infection of the obstructed urinary system. The combination is a medical and urological emergency, not uncomplicated renal colic.

Finding 2: Mental-status change and deterioration in renal function demonstrate that the illness is affecting systems beyond the urinary tract. The kidney injury may have multiple contributing mechanisms, including systemic hypoperfusion and the urinary obstruction.

Finding 3: Hypotension, prolonged capillary refill and elevated lactate together support concern for impaired circulation and tissue perfusion. Lactate should be interpreted alongside the clinical examination, not as a stand-alone diagnostic test.

Finding 4: Hyperglycemia may reflect known diabetes and acute physiological stress. A glucose value of 208 mg/dL alone does not distinguish sepsis from other conditions.

Clinical Interpretation

The findings collectively support probable sepsis from an infected obstructed urinary tract, with acute kidney dysfunction and evolving circulatory compromise.

The nurse must continue looking for alternative or additional contributors while responding promptly to the life-threatening findings.

Question 3 — Prioritize Hypotheses

NGN item type: Drop-Down Cloze

New assessment at 09:40

The patient has received approximately 1.1 L of IV crystalloid and the prescribed initial antibiotic dose. Despite treatment:

• Blood pressure is 82/46 mmHg (MAP approximately 58 mmHg).

• Heart rate is 132/min.

• Lactate has increased from 3.8 to 4.6 mmol/L.

• Urine output remains approximately 12 mL/hour.

• The patient is increasingly drowsy.

• Capillary refill is approximately 5 seconds.

Complete the statement by selecting one answer from each drop-down menu.

The nurse should prioritize [Drop-down 1] because the most concerning clinical evidence is [Drop-down 2].

Drop-down 1 — Priority Hypothesis

A. Uncomplicated renal colic requiring routine pain relief.

B. Sepsis-associated circulatory hypoperfusion with high concern for progression to septic shock.

C. Hyperglycemia as the primary explanation for all clinical findings.

D. Isolated fever without evidence of systemic dysfunction.

Drop-down 2 — Supporting Evidence

1. Fever and elevated white blood cell count alone.

2. The presence of a 7-mm ureteral stone alone.

3. Progressive hypotension, increasing lactate, oliguria and altered mental status.

4. A history of diabetes and hypertension.

Correct Answers

Drop-down 1: B

Drop-down 2: 3

Individual Rationales

Drop-down 1

A — Incorrect. The patient has physiological instability, possible organ hypoperfusion and likely systemic infection. This is not an isolated uncomplicated stone.

B — Correct. Persistent hypotension and worsening organ perfusion in suspected sepsis indicate a circulatory emergency with a high risk of septic shock.

C — Incorrect. A glucose of 208 mg/dL requires monitoring but does not adequately explain the full pattern of acute deterioration.

D — Incorrect. The patient has dysfunction extending beyond fever, including hypotension, oliguria and altered mental status.

Drop-down 2

1 — Incorrect. Fever and leukocytosis support infection but do not independently establish shock or impaired tissue perfusion.

2 — Incorrect. Stone size and obstruction help identify the anatomical problem, but the immediate circulatory threat is established by systemic deterioration.

3 — Correct. The combination of declining MAP, rising lactate, oliguria and neurological changes identifies a rapidly worsening perfusion problem.

4 — Incorrect. Diabetes and hypertension are relevant comorbidities, but neither explains the acute pattern adequately.

Important Diagnostic Distinction

At 09:40, the case supports suspected septic shock or evolving sepsis-related shock, and the nurse must respond immediately.

Formal Sepsis-3 septic shock classification generally requires vasopressors to maintain a MAP of at least 65 mmHg and a lactate greater than 2 mmol/L in the absence of hypovolemia after adequate fluid resuscitation. The nurse should not postpone urgent treatment merely to satisfy a diagnostic definition.

Priority principle: Act on severe suspected circulatory hypoperfusion while the team evaluates and treats the source of infection.

Question 4 — Generate Solutions

NGN item type: Matrix Grid — Select One Response in Each Row

The critical care provider and emergency team are coordinating treatment. The nurse participates in developing a safe immediate care plan.

For each proposed intervention, indicate whether it is appropriate or inappropriate for the current situation.

Correct Answers and Individual Rationales

A — Appropriate. IV crystalloid is first-line resuscitation for sepsis-induced hypoperfusion. The 2026 SSC guidelines suggest at least 30 mL/kg in the first three hours, with individualization and ongoing reassessment. For this 74-kg patient, 30 mL/kg is approximately 2,220 mL. This is a conditional recommendation, not permission for unrestricted fluid administration.

B — Appropriate. Norepinephrine is the preferred first-line vasopressor for septic shock. When severe hypotension persists, the team should not delay hemodynamic support unnecessarily. Prescribed therapy requires reliable access, an infusion pump and monitoring under institutional protocols.

C — Appropriate. Antibiotics alone may be insufficient when the infected collecting system remains obstructed. The clinical plan must include timely decompression, such as a ureteral stent or nephrostomy tube.

D — Inappropriate. Empiric antimicrobial treatment should not be deferred while waiting for final cultures. Cultures should be obtained promptly, ideally before antibiotics, but treatment must remain timely. The regimen can subsequently be adjusted using microbiology and clinical results.

E — Appropriate. Serial lactate, urine output, blood pressure, mentation and peripheral perfusion help assess treatment response. No single finding can establish recovery by itself.

F — Inappropriate. Oliguria in a hypotensive patient warrants evaluation of circulation, renal injury and obstruction. A loop diuretic is not a substitute for treating shock and should not be given solely to produce urine in this scenario.

Clinical Planning Summary

The nurse’s plan must address multiple urgent priorities simultaneously: resuscitation, prescribed antimicrobial treatment, hemodynamic support, organ-perfusion assessment and definitive source control.

The safest plan is not simply to increase the blood pressure. It is to restore adequate perfusion while treating the infection and removing the anatomical obstruction.

Question 5 — Take Action

NGN item type: Single-Best-Response Priority Question

New assessment at 10:30

The patient has received approximately 2.25 L of IV crystalloid. A repeated assessment has not demonstrated pulmonary edema, but the patient remains drowsy and hypotensive.

Current assessment:

• BP: 78/44 mmHg

• MAP: approximately 55 mmHg

• Heart rate: 128/min

• Urine output: 15 mL/hour

• Most recent lactate: 4.6 mmol/L

The critical care provider has prescribed norepinephrine titrated to a MAP target of approximately 65 mmHg. The patient has a functioning, suitably monitored peripheral IV, and the facility has a protocol permitting peripheral vasopressor initiation while appropriate ongoing vascular access is arranged.

Which action should the nurse take now?

A. Delay norepinephrine until a central venous catheter has been inserted, regardless of the patient’s blood pressure.

B. Initiate the prescribed norepinephrine promptly through the approved peripheral IV, using an infusion pump and the required blood-pressure and IV-site monitoring.

C. Administer an additional large fluid bolus automatically without reassessing fluid responsiveness or potential overload.

D. Wait for the fever to resolve before implementing the prescribed vasopressor.

Correct Answer: B

Individual Rationales

A — Incorrect. In this unstable patient, delaying vasopressor support solely until central venous access is established may prolong dangerous hypotension. Current guidelines allow peripheral initiation when appropriate, with careful safety monitoring.

B — Correct. The patient remains markedly hypotensive following initial resuscitation, and norepinephrine has been prescribed. Prompt administration under the approved protocol addresses the immediate circulatory threat. The nurse must assess the infusion site, monitor for extravasation, maintain reliable delivery and evaluate the blood pressure frequently.

C — Incorrect. Additional fluid may sometimes be appropriate, but repeated large boluses without reassessing responsiveness or fluid tolerance can cause harm. The decision requires individualized clinical assessment and appropriate orders.

D — Incorrect. Temperature reduction does not determine whether a patient needs vasopressors. Severe hypotension requires immediate treatment regardless of the fever pattern.

Nursing Action Priorities

During vasopressor initiation, the nurse also maintains prompt communication with the emergency and critical care teams, monitors for worsening respiratory or circulatory status, verifies ongoing antibiotic treatment and assists with timely transfer and source-control arrangements.

These activities are coordinated; starting norepinephrine does not replace antibiotics, appropriate resuscitation or drainage of the infected urinary system.

Clinical safety note: Vasopressor concentrations, infusion titration, line selection and monitoring frequency are governed by authorized orders and local protocols. This simulation intentionally does not prescribe a universal drug preparation or dosing rate.

Question 6 — Evaluate Outcomes

NGN item type: Matrix Grid — Select One Response in Each Row

New assessment at 13:30

The patient has undergone urgent ureteral stent placement and continues receiving antibiotics and a low-dose norepinephrine infusion.

The nurse evaluates whether treatment has improved the patient’s condition.

Compare the latest findings with the previous values.

For each trend, select the single best interpretation.

Correct Answers

Individual Rationales

Finding 1 — Supports improvement. Lactate is decreasing, which is encouraging when viewed with the broader clinical improvement. However, 2.5 mmol/L remains elevated, and lactate is neither a perfect nor a specific measure of tissue perfusion.

Finding 2 — Supports improvement. Urine output has increased to approximately 0.65 mL/kg/hour, exceeding the commonly used 0.5 mL/kg/hour benchmark. This suggests an improving renal/perfusion response, although urine output after relief of obstruction must continue to be monitored.

Finding 3 — Supports improvement. The return of normal alertness and orientation is a favorable neurological response. The clinician should continue to monitor for recurrent confusion or deterioration.

Finding 4 — Unresolved concern. Creatinine is higher than both baseline and the initial emergency department result. Acute kidney injury can persist or evolve despite improving circulation. Creatinine may lag behind clinical changes; this rise requires continued renal evaluation rather than assuming recovery is complete.

Finding 5 — Unresolved concern. The MAP is now above the prescribed minimum target, but that pressure is being maintained with norepinephrine. The achieved pressure is a favorable treatment response; ongoing vasopressor dependence means circulatory recovery is not yet established.

Finding 6 — Not reliable alone to establish recovery. The temperature has fallen after antipyretic treatment. This does not prove that the infection has cleared or that organ perfusion has normalized.

Overall Evaluation

The patient is improving but remains critically ill.

The combination of falling lactate, improved consciousness, increased urine output and improved peripheral perfusion supports a response to treatment. However, the patient still requires vasoactive therapy and monitoring of acute kidney injury.

Further nursing priorities include continued hemodynamic assessment, safe vasopressor administration, trending renal function and electrolytes, reviewing microbiology, monitoring for recurrent obstruction or deterioration and evaluating the response to antibiotics and drainage.

Vasopressor reduction or discontinuation requires appropriate clinical reassessment and authorized orders or protocols. A single improved MAP or laboratory value should never be interpreted as complete sepsis recovery.

The Six Clinical Judgment Operations: Final Learning Summary

Essential Clinical Concepts

Sepsis: Life-threatening acute organ dysfunction caused by a dysregulated host response to infection.

Septic shock: A severe subset of sepsis involving profound circulatory and metabolic abnormalities. Under Sepsis-3 clinical criteria, patients generally require vasopressors to maintain MAP of at least 65 mmHg and have lactate above 2 mmol/L despite adequate fluid resuscitation, in the absence of hypovolemia.

Oliguria: Reduced urine output. A commonly used adult clinical and AKI criterion is less than 0.5 mL/kg/hour over a specified duration. A single low-hour reading is an important warning sign but does not by itself establish the duration-based AKI criterion.

Lactate: A marker that may rise with hypoperfusion or other forms of physiological stress. It must be interpreted with clinical findings and serial measurements.

Source control: Measures that eliminate or control the anatomical focus of infection. In an infected obstructed urinary system, this may require drainage with a ureteral stent or nephrostomy.

Vasopressor: A medication used to support vascular tone and blood pressure in circulatory shock. Norepinephrine is the recommended first-line agent for most adults with septic shock.

NCLEX-RN Safety Principles to Remember

1. Do not mistake an isolated infection for the entire clinical problem when acute organ dysfunction is present.

2. Do not wait for culture results before implementing timely prescribed antibiotics in probable or definite sepsis or septic shock.

3. Do not assume all patients require unlimited IV fluids; reassess responsiveness and potential harm.

4. Do not confuse a blood pressure maintained by vasopressors with complete circulatory recovery.

5. Do not treat normalization of temperature as proof of source control or restoration of perfusion.

6. Evaluate the complete patient rather than one isolated vital sign or laboratory result.

Malayalam Nursing Terminology — Quick Reference

The Malayalam explanations support understanding; English clinical terms and the full patient context should still be learned accurately.