PASS NSG 550 EXAMS 1–3 – WILKES DIAGNOSTIC REASONING (2026) ACTUAL QUESTIONS
AND ANSWERS ALREADY GRADED A+| 100% VERIFIED SOLUTIONS………...
CORE DOMAINS
Clinical Reasoning and Diagnostic Process
History Taking and Physical Assessment
Differential Diagnosis Development
Laboratory and Diagnostic Test Interpretation
Pharmacological Reasoning and Prescribing
Management of Acute and Chronic Conditions
Health Promotion and Disease Prevention
Regulatory Compliance and Scope of Practice
Ethics and Professional Standards
Evidence-Based Practice and Clinical Decision-Making
INTRODUCTION
This comprehensive assessment evaluates advanced diagnostic reasoning skills essential for nurse
practitioner practice. It measures competency in history taking, physical assessment, differential
diagnosis development, and diagnostic test interpretation. The multiple-choice and scenario-based
structure emphasizes real-world clinical application, evidence-based decision-making, and ethical
practice. Candidates must demonstrate critical thinking, prioritize diagnoses, select appropriate
interventions, and apply regulatory and professional standards to complex patient scenarios
encountered in advanced nursing practice.
,SECTION ONE: QUESTIONS 1–100
1. A 55-year-old male presents with substernal chest pressure radiating to the left arm,
diaphoresis, and nausea. Which of the following is the priority differential diagnosis?
A. Gastroesophageal reflux disease
B. Acute myocardial infarction
C. Musculoskeletal chest pain
D. Anxiety disorder
🟢 B. Acute myocardial infarction
🔴 RATIONALE: The combination of substernal chest pressure radiating to the left arm with
diaphoresis and nausea is classic for acute myocardial infarction and requires immediate
evaluation to rule out this life-threatening condition.
2. Which of the following is the most sensitive indicator of acute myocardial injury?
A. Myoglobin
B. Creatine kinase-MB
C. Troponin I
D. Lactate dehydrogenase
🟢 C. Troponin I
🔴 RATIONALE: Troponin I is highly specific to cardiac muscle and rises within 3 to 6 hours of
myocardial injury, remaining elevated for 7 to 10 days, making it the most sensitive and specific
biomarker.
,3. A 68-year-old female presents with sudden-onset right-sided weakness and slurred speech
that began 45 minutes ago. Which of the following is the priority action?
A. Administer aspirin immediately
B. Obtain emergent non-contrast CT of the head
C. Administer tissue plasminogen activator
D. Perform carotid ultrasound
🟢 B. Obtain emergent non-contrast CT of the head
🔴 RATIONALE: Emergent non-contrast CT is essential to differentiate ischemic stroke from
hemorrhagic stroke before any thrombolytic therapy can be considered.
4. A 45-year-old male with a history of alcohol abuse presents with severe epigastric pain
radiating to the back, nausea, and vomiting. Which of the following laboratory findings would
best support a diagnosis of acute pancreatitis?
A. Elevated serum amylase and lipase
B. Elevated alkaline phosphatase
C. Elevated blood urea nitrogen
D. Elevated creatine kinase
🟢 A. Elevated serum amylase and lipase
🔴 RATIONALE: Acute pancreatitis is characterized by elevated serum amylase and lipase levels,
with lipase being more specific and remaining elevated longer than amylase.
, 5. A 32-year-old female presents with fatigue, weight gain, cold intolerance, and constipation.
Which of the following laboratory tests is most appropriate to order first?
A. Thyroid-stimulating hormone
B. Free T4
C. Triiodothyronine
D. Thyroid peroxidase antibodies
🟢 A. Thyroid-stimulating hormone
🔴 RATIONALE: Thyroid-stimulating hormone is the most sensitive screening test for thyroid
dysfunction. In primary hypothyroidism, thyroid-stimulating hormone will be elevated.
6. A 60-year-old male with chronic obstructive pulmonary disease presents with increased
dyspnea, purulent sputum, and wheezing. Which of the following is the most likely diagnosis?
A. Acute bronchitis
B. Acute exacerbation of chronic obstructive pulmonary disease
C. Pneumonia
D. Pulmonary embolism
🟢 B. Acute exacerbation of chronic obstructive pulmonary disease
🔴 RATIONALE: Increased dyspnea, purulent sputum, and wheezing in a patient with known
chronic obstructive pulmonary disease indicate an acute exacerbation.
7. Which of the following is the most common cause of community-acquired pneumonia?
AND ANSWERS ALREADY GRADED A+| 100% VERIFIED SOLUTIONS………...
CORE DOMAINS
Clinical Reasoning and Diagnostic Process
History Taking and Physical Assessment
Differential Diagnosis Development
Laboratory and Diagnostic Test Interpretation
Pharmacological Reasoning and Prescribing
Management of Acute and Chronic Conditions
Health Promotion and Disease Prevention
Regulatory Compliance and Scope of Practice
Ethics and Professional Standards
Evidence-Based Practice and Clinical Decision-Making
INTRODUCTION
This comprehensive assessment evaluates advanced diagnostic reasoning skills essential for nurse
practitioner practice. It measures competency in history taking, physical assessment, differential
diagnosis development, and diagnostic test interpretation. The multiple-choice and scenario-based
structure emphasizes real-world clinical application, evidence-based decision-making, and ethical
practice. Candidates must demonstrate critical thinking, prioritize diagnoses, select appropriate
interventions, and apply regulatory and professional standards to complex patient scenarios
encountered in advanced nursing practice.
,SECTION ONE: QUESTIONS 1–100
1. A 55-year-old male presents with substernal chest pressure radiating to the left arm,
diaphoresis, and nausea. Which of the following is the priority differential diagnosis?
A. Gastroesophageal reflux disease
B. Acute myocardial infarction
C. Musculoskeletal chest pain
D. Anxiety disorder
🟢 B. Acute myocardial infarction
🔴 RATIONALE: The combination of substernal chest pressure radiating to the left arm with
diaphoresis and nausea is classic for acute myocardial infarction and requires immediate
evaluation to rule out this life-threatening condition.
2. Which of the following is the most sensitive indicator of acute myocardial injury?
A. Myoglobin
B. Creatine kinase-MB
C. Troponin I
D. Lactate dehydrogenase
🟢 C. Troponin I
🔴 RATIONALE: Troponin I is highly specific to cardiac muscle and rises within 3 to 6 hours of
myocardial injury, remaining elevated for 7 to 10 days, making it the most sensitive and specific
biomarker.
,3. A 68-year-old female presents with sudden-onset right-sided weakness and slurred speech
that began 45 minutes ago. Which of the following is the priority action?
A. Administer aspirin immediately
B. Obtain emergent non-contrast CT of the head
C. Administer tissue plasminogen activator
D. Perform carotid ultrasound
🟢 B. Obtain emergent non-contrast CT of the head
🔴 RATIONALE: Emergent non-contrast CT is essential to differentiate ischemic stroke from
hemorrhagic stroke before any thrombolytic therapy can be considered.
4. A 45-year-old male with a history of alcohol abuse presents with severe epigastric pain
radiating to the back, nausea, and vomiting. Which of the following laboratory findings would
best support a diagnosis of acute pancreatitis?
A. Elevated serum amylase and lipase
B. Elevated alkaline phosphatase
C. Elevated blood urea nitrogen
D. Elevated creatine kinase
🟢 A. Elevated serum amylase and lipase
🔴 RATIONALE: Acute pancreatitis is characterized by elevated serum amylase and lipase levels,
with lipase being more specific and remaining elevated longer than amylase.
, 5. A 32-year-old female presents with fatigue, weight gain, cold intolerance, and constipation.
Which of the following laboratory tests is most appropriate to order first?
A. Thyroid-stimulating hormone
B. Free T4
C. Triiodothyronine
D. Thyroid peroxidase antibodies
🟢 A. Thyroid-stimulating hormone
🔴 RATIONALE: Thyroid-stimulating hormone is the most sensitive screening test for thyroid
dysfunction. In primary hypothyroidism, thyroid-stimulating hormone will be elevated.
6. A 60-year-old male with chronic obstructive pulmonary disease presents with increased
dyspnea, purulent sputum, and wheezing. Which of the following is the most likely diagnosis?
A. Acute bronchitis
B. Acute exacerbation of chronic obstructive pulmonary disease
C. Pneumonia
D. Pulmonary embolism
🟢 B. Acute exacerbation of chronic obstructive pulmonary disease
🔴 RATIONALE: Increased dyspnea, purulent sputum, and wheezing in a patient with known
chronic obstructive pulmonary disease indicate an acute exacerbation.
7. Which of the following is the most common cause of community-acquired pneumonia?
