NR 507 FINAL EXAM – ADVANCED
PATHOPHYSIOLOGY (2026) ACTUAL QUESTIONS
& ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT DOWNLOAD
PDF
Core Domains
• Cellular Adaptation, Injury, and Neoplasia
• Fluid, Electrolyte, and Acid-Base Balance
• Genetics and Immunologic Disorders
• Hematologic Disorders
• Cardiovascular Pathophysiology
• Pulmonary Pathophysiology
• Renal and Urinary System Disorders
• Endocrine System Disorders
• Neurologic Disorders
• Gastrointestinal and Hepatic Disorders
Introduction
This comprehensive examination is designed to rigorously assess the advanced
pathophysiology knowledge required for graduate-level nursing practice,
specifically for Chamberlain University's NR 507 course. The exam evaluates the
student's ability to apply pathophysiological concepts to clinical scenarios,
interpret diagnostic data, and make sound clinical judgments. It encompasses
cellular mechanisms, systemic disease processes, and the integration of
pathophysiology across multiple body systems. The assessment consists of one
hundred multiple-choice questions that blend foundational theory with
complex, real-world clinical presentations. Candidates are expected to
demonstrate critical thinking, clinical reasoning, and a deep understanding of
disease mechanisms essential for advanced nursing practice.
,
,SECTION ONE: QUESTIONS 1–100
Question 1
A 68-year-old male with a 40-pack-year smoking history presents with increased
dyspnea and a productive cough. Arterial blood gas (ABG) shows pH 7.31, PaCO₂ 55
mm Hg, PaO₂ 62 mm Hg, HCO₃⁻ 28 mEq/L. What acid-base imbalance is present?
A. Metabolic acidosis
B. Respiratory alkalosis
C. Metabolic alkalosis
D. Respiratory acidosis
D. Respiratory acidosis
RATIONALE: The pH is low (7.31), indicating acidosis. The PaCO₂ is elevated (55
mm Hg), indicating a respiratory cause. The HCO₃⁻ is elevated (28 mEq/L) as a
compensatory response. This pattern is consistent with respiratory acidosis with
metabolic compensation, commonly seen in COPD exacerbations.
Question 2
A 45-year-old female with metastatic breast cancer presents with severe bone pain,
nausea, and confusion. Serum calcium is 13.5 mg/dL. What is the primary
mechanism for this hypercalcemia?
A. Decreased renal excretion
B. Osteoclastic bone resorption
C. Increased intestinal absorption
D. Secondary hyperparathyroidism
B. Osteoclastic bone resorption
RATIONALE: In metastatic breast cancer, tumor cells secrete factors that
stimulate osteoclasts, leading to accelerated bone breakdown and release of excess
, calcium. This is the primary mechanism for malignancy-associated hypercalcemia.
Parathyroid hormone is typically suppressed in this setting.
Question 3
Which of the following best describes the pathophysiology of left-sided heart failure?
A. Decreased cardiac output with systemic venous congestion
B. Pulmonary congestion with increased left ventricular end-diastolic pressure
C. Right ventricular hypertrophy with peripheral edema
D. Decreased preload with reduced stroke volume
B. Pulmonary congestion with increased left ventricular end-diastolic pressure
RATIONALE: Left-sided heart failure results in increased left ventricular end-
diastolic pressure, which is transmitted back to the pulmonary circulation, causing
pulmonary congestion and edema. Systemic venous congestion is characteristic of
right-sided heart failure.
Question 4
Which electrolyte imbalance is most commonly associated with diabetic
ketoacidosis (DKA)?
A. Hypercalcemia
B. Hypokalemia
C. Hyponatremia
D. Hyperphosphatemia
B. Hypokalemia
RATIONALE: In DKA, total body potassium is depleted due to osmotic diuresis
and urinary losses. Although initial serum potassium may be normal or elevated due
to acidosis-driven shifts, total body potassium is low, and hypokalemia can develop
rapidly with insulin therapy.
PATHOPHYSIOLOGY (2026) ACTUAL QUESTIONS
& ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT DOWNLOAD
Core Domains
• Cellular Adaptation, Injury, and Neoplasia
• Fluid, Electrolyte, and Acid-Base Balance
• Genetics and Immunologic Disorders
• Hematologic Disorders
• Cardiovascular Pathophysiology
• Pulmonary Pathophysiology
• Renal and Urinary System Disorders
• Endocrine System Disorders
• Neurologic Disorders
• Gastrointestinal and Hepatic Disorders
Introduction
This comprehensive examination is designed to rigorously assess the advanced
pathophysiology knowledge required for graduate-level nursing practice,
specifically for Chamberlain University's NR 507 course. The exam evaluates the
student's ability to apply pathophysiological concepts to clinical scenarios,
interpret diagnostic data, and make sound clinical judgments. It encompasses
cellular mechanisms, systemic disease processes, and the integration of
pathophysiology across multiple body systems. The assessment consists of one
hundred multiple-choice questions that blend foundational theory with
complex, real-world clinical presentations. Candidates are expected to
demonstrate critical thinking, clinical reasoning, and a deep understanding of
disease mechanisms essential for advanced nursing practice.
,
,SECTION ONE: QUESTIONS 1–100
Question 1
A 68-year-old male with a 40-pack-year smoking history presents with increased
dyspnea and a productive cough. Arterial blood gas (ABG) shows pH 7.31, PaCO₂ 55
mm Hg, PaO₂ 62 mm Hg, HCO₃⁻ 28 mEq/L. What acid-base imbalance is present?
A. Metabolic acidosis
B. Respiratory alkalosis
C. Metabolic alkalosis
D. Respiratory acidosis
D. Respiratory acidosis
RATIONALE: The pH is low (7.31), indicating acidosis. The PaCO₂ is elevated (55
mm Hg), indicating a respiratory cause. The HCO₃⁻ is elevated (28 mEq/L) as a
compensatory response. This pattern is consistent with respiratory acidosis with
metabolic compensation, commonly seen in COPD exacerbations.
Question 2
A 45-year-old female with metastatic breast cancer presents with severe bone pain,
nausea, and confusion. Serum calcium is 13.5 mg/dL. What is the primary
mechanism for this hypercalcemia?
A. Decreased renal excretion
B. Osteoclastic bone resorption
C. Increased intestinal absorption
D. Secondary hyperparathyroidism
B. Osteoclastic bone resorption
RATIONALE: In metastatic breast cancer, tumor cells secrete factors that
stimulate osteoclasts, leading to accelerated bone breakdown and release of excess
, calcium. This is the primary mechanism for malignancy-associated hypercalcemia.
Parathyroid hormone is typically suppressed in this setting.
Question 3
Which of the following best describes the pathophysiology of left-sided heart failure?
A. Decreased cardiac output with systemic venous congestion
B. Pulmonary congestion with increased left ventricular end-diastolic pressure
C. Right ventricular hypertrophy with peripheral edema
D. Decreased preload with reduced stroke volume
B. Pulmonary congestion with increased left ventricular end-diastolic pressure
RATIONALE: Left-sided heart failure results in increased left ventricular end-
diastolic pressure, which is transmitted back to the pulmonary circulation, causing
pulmonary congestion and edema. Systemic venous congestion is characteristic of
right-sided heart failure.
Question 4
Which electrolyte imbalance is most commonly associated with diabetic
ketoacidosis (DKA)?
A. Hypercalcemia
B. Hypokalemia
C. Hyponatremia
D. Hyperphosphatemia
B. Hypokalemia
RATIONALE: In DKA, total body potassium is depleted due to osmotic diuresis
and urinary losses. Although initial serum potassium may be normal or elevated due
to acidosis-driven shifts, total body potassium is low, and hypokalemia can develop
rapidly with insulin therapy.
