NSG 550 EXAM 2 - WILKES
DIAGNOSTIC REASONING (2026)
ACTUAL QUESTIONS & STUDY
LATEST MOCK PRACTICE SET
190 Questions with Answers and Detailed Rationales
100 PERCENT GUARANTEED PASS
INSTANT DOWNLOAD ANSWERS INCLUDED
IMPORTANCE OF THIS DOCUMENT
This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
NSG 550 EXAM 2 - WILKES DIAGNOSTIC REASONING (2026) ACTUAL QUESTIONS & STUDY GUIDE |
GUARANTEE PASS. It contains 190 carefully selected questions that reflect the most current exam content and
testing strategies. Each question is accompanied by a correct answer and a detailed rationale that explains the
underlying pathophysiology, pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
Concept Reinforcement – Deepen your Confidence Building – Develop test-taking
understanding through strategies and reduce
evidence-based exam anxiety
rationales
Time Management – Practice answering
questions under simulated
exam conditions
Review Summary 190 Questions
Foundations - Application - NSG 550 2 Wilkes Diagnostic Reasoning 2026 Actual & Study Guide
Guarantee PASS Nursing Diagnostic Reasoning Graduate
All answers with rationales
,Table of Contents
Content Area Questions Key Topics
Acute 1-48 Diagnostic, Presents, Finding, Rather, Diagnosis
Appropriate 49-96 Acute, Suspected, Finding, Presents, Pulmonary
Diagnostic 97-144 Appropriate, Acute, Suspected, Presents, Finding
Presents 145-190 Acute, Appropriate, Diagnostic, Kidney, Findings
TOTAL 190 All questions include answers and detailed rationales
,Section A - Acute
Q1.
A patient presents with fatigue, weight gain, and cold intolerance. Laboratory results show
elevated TSH and low free T4. Which additional finding is most consistent with primary
hypothyroidism?
A. Low serum cortisol B. Elevated serum prolactin
C. Decreased LDL cholesterol D. Increased creatinine kinase
Correct: D - Increased creatinine kinase
Rationale:Primary hypothyroidism often leads to elevated creatinine kinase due to muscle
involvement. Low cortisol, elevated prolactin, and decreased LDL are not typical; LDL is
usually elevated due to reduced clearance.
Q2.
A clinician is evaluating a patient with suspected community-acquired pneumonia. Which
combination of findings most strongly supports the diagnosis of atypical pneumonia?
A. High fever, productive cough, and lobar B. Gradual onset, dry cough, and patchy
consolidation on chest X-ray interstitial infiltrates on chest X-ray
C. Sudden onset, pleuritic chest pain, and D. Low-grade fever, wheezing, and
pleural effusion hyperinflation on chest X-ray
Correct: B - Gradual onset, dry cough, and patchy interstitial infiltrates on chest X-ray
Rationale:Atypical pneumonia typically presents with gradual onset, dry cough, and interstitial
infiltrates. Lobar consolidation is classic for typical bacterial pneumonia, while pleural effusion
and wheezing are less specific.
Q3.
Which clinical scenario is most consistent with acute kidney injury (AKI) secondary to
prerenal azotemia?
A. Urine sodium 10 mEq/L, fractional B. Urine sodium 40 mEq/L, fractional
excretion of sodium <1%, and elevated excretion of sodium >2%, and muddy brown
BUN:creatinine ratio casts
C. Urine sodium 20 mEq/L, fractional D. Urine sodium 30 mEq/L, fractional
excretion of sodium 1%, and red blood cell excretion of sodium 2%, and white blood cell
casts casts
Correct: A - Urine sodium 10 mEq/L, fractional excretion of sodium <1%, and elevated
BUN:creatinine ratio
Page 3
, Section A - Acute
Rationale: Prerenal AKI is characterized by low urine sodium (<20), low FENa (<1%), and
high BUN:creatinine ratio (>20:1) due to increased tubular reabsorption. The other options
suggest intrinsic renal causes.
Q4.
A patient with type 2 diabetes is started on metformin. Which laboratory value requires
immediate attention before continuing the medication?
A. HbA1c 8.2% B. eGFR 38 mL/min/1.73m²
C. ALT 45 U/L D. Fasting glucose 140 mg/dL
Correct: B - eGFR 38 mL/min/1.73m²
Rationale:Metformin is contraindicated when eGFR <30 and should be used with caution at
30-45; at 38, the risk of lactic acidosis increases. Liver enzymes and glucose levels do not
preclude use.
Q5.
Which of the following best describes the mechanism of action of SSRIs in the treatment
of depression?
A. Blockade of serotonin reuptake, leading B. Inhibition of monoamine oxidase,
to increased serotonin in the synaptic cleft decreasing breakdown of serotonin and
norepinephrine
C. Antagonism of serotonin receptors, D. Stimulation of serotonin release from
reducing negative feedback presynaptic neurons
Correct: A - Blockade of serotonin reuptake, leading to increased serotonin in the synaptic
cleft
Rationale:SSRIs selectively inhibit the serotonin transporter, increasing synaptic serotonin.
MAOIs inhibit monoamine oxidase, and some atypical antidepressants have receptor
antagonism, but SSRIs specifically block reuptake.
Q6.
A patient presents with acute severe epigastric pain radiating to the back, nausea, and
vomiting. Serum amylase and lipase are elevated. Which additional finding is most
specific for acute pancreatitis?
A. Elevated liver enzymes B. Hypocalcemia
C. Elevated C-reactive protein D. Metabolic alkalosis
Correct: B - Hypocalcemia
Page 4
DIAGNOSTIC REASONING (2026)
ACTUAL QUESTIONS & STUDY
LATEST MOCK PRACTICE SET
190 Questions with Answers and Detailed Rationales
100 PERCENT GUARANTEED PASS
INSTANT DOWNLOAD ANSWERS INCLUDED
IMPORTANCE OF THIS DOCUMENT
This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
NSG 550 EXAM 2 - WILKES DIAGNOSTIC REASONING (2026) ACTUAL QUESTIONS & STUDY GUIDE |
GUARANTEE PASS. It contains 190 carefully selected questions that reflect the most current exam content and
testing strategies. Each question is accompanied by a correct answer and a detailed rationale that explains the
underlying pathophysiology, pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
Concept Reinforcement – Deepen your Confidence Building – Develop test-taking
understanding through strategies and reduce
evidence-based exam anxiety
rationales
Time Management – Practice answering
questions under simulated
exam conditions
Review Summary 190 Questions
Foundations - Application - NSG 550 2 Wilkes Diagnostic Reasoning 2026 Actual & Study Guide
Guarantee PASS Nursing Diagnostic Reasoning Graduate
All answers with rationales
,Table of Contents
Content Area Questions Key Topics
Acute 1-48 Diagnostic, Presents, Finding, Rather, Diagnosis
Appropriate 49-96 Acute, Suspected, Finding, Presents, Pulmonary
Diagnostic 97-144 Appropriate, Acute, Suspected, Presents, Finding
Presents 145-190 Acute, Appropriate, Diagnostic, Kidney, Findings
TOTAL 190 All questions include answers and detailed rationales
,Section A - Acute
Q1.
A patient presents with fatigue, weight gain, and cold intolerance. Laboratory results show
elevated TSH and low free T4. Which additional finding is most consistent with primary
hypothyroidism?
A. Low serum cortisol B. Elevated serum prolactin
C. Decreased LDL cholesterol D. Increased creatinine kinase
Correct: D - Increased creatinine kinase
Rationale:Primary hypothyroidism often leads to elevated creatinine kinase due to muscle
involvement. Low cortisol, elevated prolactin, and decreased LDL are not typical; LDL is
usually elevated due to reduced clearance.
Q2.
A clinician is evaluating a patient with suspected community-acquired pneumonia. Which
combination of findings most strongly supports the diagnosis of atypical pneumonia?
A. High fever, productive cough, and lobar B. Gradual onset, dry cough, and patchy
consolidation on chest X-ray interstitial infiltrates on chest X-ray
C. Sudden onset, pleuritic chest pain, and D. Low-grade fever, wheezing, and
pleural effusion hyperinflation on chest X-ray
Correct: B - Gradual onset, dry cough, and patchy interstitial infiltrates on chest X-ray
Rationale:Atypical pneumonia typically presents with gradual onset, dry cough, and interstitial
infiltrates. Lobar consolidation is classic for typical bacterial pneumonia, while pleural effusion
and wheezing are less specific.
Q3.
Which clinical scenario is most consistent with acute kidney injury (AKI) secondary to
prerenal azotemia?
A. Urine sodium 10 mEq/L, fractional B. Urine sodium 40 mEq/L, fractional
excretion of sodium <1%, and elevated excretion of sodium >2%, and muddy brown
BUN:creatinine ratio casts
C. Urine sodium 20 mEq/L, fractional D. Urine sodium 30 mEq/L, fractional
excretion of sodium 1%, and red blood cell excretion of sodium 2%, and white blood cell
casts casts
Correct: A - Urine sodium 10 mEq/L, fractional excretion of sodium <1%, and elevated
BUN:creatinine ratio
Page 3
, Section A - Acute
Rationale: Prerenal AKI is characterized by low urine sodium (<20), low FENa (<1%), and
high BUN:creatinine ratio (>20:1) due to increased tubular reabsorption. The other options
suggest intrinsic renal causes.
Q4.
A patient with type 2 diabetes is started on metformin. Which laboratory value requires
immediate attention before continuing the medication?
A. HbA1c 8.2% B. eGFR 38 mL/min/1.73m²
C. ALT 45 U/L D. Fasting glucose 140 mg/dL
Correct: B - eGFR 38 mL/min/1.73m²
Rationale:Metformin is contraindicated when eGFR <30 and should be used with caution at
30-45; at 38, the risk of lactic acidosis increases. Liver enzymes and glucose levels do not
preclude use.
Q5.
Which of the following best describes the mechanism of action of SSRIs in the treatment
of depression?
A. Blockade of serotonin reuptake, leading B. Inhibition of monoamine oxidase,
to increased serotonin in the synaptic cleft decreasing breakdown of serotonin and
norepinephrine
C. Antagonism of serotonin receptors, D. Stimulation of serotonin release from
reducing negative feedback presynaptic neurons
Correct: A - Blockade of serotonin reuptake, leading to increased serotonin in the synaptic
cleft
Rationale:SSRIs selectively inhibit the serotonin transporter, increasing synaptic serotonin.
MAOIs inhibit monoamine oxidase, and some atypical antidepressants have receptor
antagonism, but SSRIs specifically block reuptake.
Q6.
A patient presents with acute severe epigastric pain radiating to the back, nausea, and
vomiting. Serum amylase and lipase are elevated. Which additional finding is most
specific for acute pancreatitis?
A. Elevated liver enzymes B. Hypocalcemia
C. Elevated C-reactive protein D. Metabolic alkalosis
Correct: B - Hypocalcemia
Page 4
