FINAL EXAM REVIEW GUIDE · WEEKS 7-11
NURS 6501
Advanced
Pathophysiology
A comprehensive final examination review of 150
board-style questions with detailed rationales,
integrating pathophysiologic mechanisms,
laboratory interpretation, and clinical reasoning
across eight body-system domains.
Walden University · NURS 6501 / NURS6501
Aligned with the Course Syllabus, AACN Essentials of
Master's Education, and Advanced Pathophysiology
Competencies
Latest Edition
WA L DE N U N I V E R S I T Y · G R A DU AT E N U R S I N G
,NURS 6501 ADVANCED PATHOPHYSIOLOGY | FINAL EXAM REVIEW GUIDE | WEEKS 7-11
NURS 6501 / NURS6501: ADVANCED PATHOPHYSIOLOGY
FINAL EXAM REVIEW GUIDE - WEEKS 7 - 11 (LATEST )
WALDEN UNIVERSITY | Aligned with the NURS 6501 Course Syllabus, AACN Essentials of Master's Education, and
Advanced Pathophysiology Competencies
Section 1: Cardiovascular Pathophysiology
Q1: Which sequence of events best describes the earliest pathogenesis of an atherosclerotic plaque?
A. Platelet aggregation on an intact endothelial surface with fibrin deposition
B. Endothelial injury permitting low-density lipoprotein infiltration, oxidation, and macrophage-derived foam
cell formation [CORRECT]
C. Proliferation of smooth muscle cells within the intima prior to any lipid accumulation
D. Dystrophic calcification of the tunica media secondary to chronic hypoxia
Correct Answer: B
Rationale: Atherosclerosis begins with endothelial injury or dysfunction, which increases permeability to LDL particles that
become trapped and oxidized within the intima. Circulating monocytes migrate into the vessel wall, differentiate into
macrophages, and engulf oxidized LDL to form foam cells, producing the earliest lesion, the fatty streak. Smooth muscle
proliferation (C), platelet aggregation on disrupted plaque (A), and dystrophic calcification (D) are later events in plaque
evolution. This endothelial injury mechanism is foundational content in the NURS 6501 advanced pathophysiology
curriculum.
Q2: A 62-year-old man reports substernal chest pressure that begins after walking two blocks and resolves within five
minutes of resting. Cardiac biomarkers are negative and the baseline ECG is normal. Which pathophysiologic
mechanism best explains his pain?
A. Spontaneous rupture of an unstable plaque with partial thrombotic occlusion
B. Coronary artery vasospasm unrelated to atherosclerotic burden
C. A fixed atherosclerotic coronary stenosis limiting perfusion during increased myocardial oxygen demand
[CORRECT]
D. Microembolization of platelet aggregates from the left atrial appendage
Correct Answer: C
Rationale: Stable angina results from a fixed coronary stenosis, typically 70 percent or greater, which is adequate at rest but
creates a supply-demand mismatch when exertion increases heart rate, contractility, and wall tension. The pain predictably
occurs with exertion and resolves with rest because myocardial oxygen balance is restored. Plaque rupture with thrombosis (A)
describes unstable angina or myocardial infarction, vasospasm (B) describes variant or Prinzmetal angina, and left atrial
microembolization (D) is not a mechanism of exertional chest pain.
Walden University - Graduate Nursing 1
,NURS 6501 ADVANCED PATHOPHYSIOLOGY | FINAL EXAM REVIEW GUIDE | WEEKS 7-11
Q3: A 58-year-old woman presents to the emergency department 90 minutes after the onset of crushing substernal
chest pain. The initial ECG shows ST depression and the first troponin I is within normal limits. Which laboratory
principle best guides the next diagnostic step?
A. Myoglobin should be ordered because it is the most specific marker of myocardial necrosis
B. CK-MB is superior to troponin because it remains elevated for up to two weeks
C. Troponin testing should be repeated in 2 to 3 hours because troponin I typically becomes detectable within 3
to 4 hours of injury [CORRECT]
D. A normal initial troponin excludes myocardial infarction and no further testing is indicated
Correct Answer: C
Rationale: Cardiac troponin I or T is the most specific biomarker of myocardial injury, rising within approximately 3 to 4
hours of symptom onset, peaking at 18 to 24 hours, and remaining elevated for 7 to 14 days. Serial testing at 2 to 3 hour
intervals is standard because a single early value cannot exclude infarction. Myoglobin (A) appears earliest but is the least
specific marker, CK-MB (B) rises within 4 to 6 hours and normalizes in 2 to 3 days rather than persisting for two weeks, and
an early normal troponin (D) never excludes myocardial infarction in a symptomatic patient.
Q4: Six days after an inferior myocardial infarction, a 71-year-old man suddenly develops pulmonary edema and
hypotension. Auscultation reveals a new holosystolic murmur at the apex radiating to the axilla. Which mechanical
complication most likely occurred?
A. Ventricular free wall rupture with cardiac tamponade
B. Rupture of the posteromedial papillary muscle causing acute mitral regurgitation [CORRECT]
C. Post-infarction ventricular septal defect
D. Ventricular aneurysm with mural thrombus formation
Correct Answer: B
Rationale: Papillary muscle rupture classically occurs 3 to 7 days after infarction and most often involves the posteromedial
papillary muscle, which receives blood supply solely from the posterior descending artery. Loss of chordal support produces
abrupt, severe mitral regurgitation with an apical holosystolic murmur and flash pulmonary edema. Free wall rupture (A)
presents with tamponade and sudden collapse, a post-infarction ventricular septal defect (C) produces a harsh left sternal
border murmur with a palpable thrill, and ventricular aneurysm (D) is a later remodeling complication that causes heart failure
and dysrhythmias rather than acute pulmonary edema.
Q5: Which mechanism best explains sustained blood pressure elevation in primary (essential) hypertension?
A. Excess atrial natriuretic peptide causing sodium retention
B. Chronic suppression of the sympathetic nervous system
C. Decreased renin release from the juxtaglomerular cells
D. Activation of the renin-angiotensin-aldosterone system promoting vasoconstriction and sodium retention
[CORRECT]
Correct Answer: D
Rationale: In essential hypertension, kidneys with relative underperfusion and sympathetic overactivity increase renin release,
generating angiotensin II, a potent vasoconstrictor that also stimulates aldosterone secretion. The resulting sodium and water
retention expands intravascular volume while angiotensin II directly raises peripheral resistance, sustaining elevated afterload.
Atrial natriuretic peptide (A) promotes sodium excretion rather than retention, sympathetic suppression (B) would lower blood
pressure, and renin is increased rather than decreased (C) in most renin-dependent hypertension. This neurohormonal model is
a core NURS 6501 pathophysiology competency.
Walden University - Graduate Nursing 2
, NURS 6501 ADVANCED PATHOPHYSIOLOGY | FINAL EXAM REVIEW GUIDE | WEEKS 7-11
Q6: A 38-year-old woman with resistant hypertension has a serum potassium of 2.8 mEq/L, bicarbonate of 32 mEq/L,
low plasma renin activity, and an elevated serum aldosterone level. CT imaging shows a 2-cm left adrenal nodule.
Which mechanism best explains her hypertension?
A. Renal artery stenosis triggering renin-dependent aldosterone release
B. Catecholamine excess from an adrenal medullary tumor
C. An aldosterone-secreting adenoma causing sodium retention and potassium wasting that is independent of
renin [CORRECT]
D. Excess cortisol activating mineralocorticoid receptors
Correct Answer: C
Rationale: Primary aldosteronism (Conn syndrome) results from an autonomous aldosterone-secreting adenoma that
promotes distal tubular sodium reabsorption and urinary excretion of potassium and hydrogen ion, producing hypertension
with hypokalemic metabolic alkalosis. Because aldosterone secretion is autonomous, plasma renin is characteristically
suppressed. Renal artery stenosis (A) produces secondary hyperaldosteronism with elevated renin, pheochromocytoma (B)
causes paroxysmal hypertension through catecholamine excess, and cortisol excess (D) defines Cushing syndrome, which
additionally produces glucocorticoid manifestations such as central obesity and hyperglycemia.
Q7: A 58-year-old man with heart failure and reduced ejection fraction (LVEF 28 percent) asks why his condition
continues to worsen despite stable coronary disease. Which mechanism best explains this progression?
A. Chronic neurohormonal activation drives maladaptive remodeling with myocyte hypertrophy, fibrosis, and
apoptosis [CORRECT]
B. Persistent elevation of preload progressively improves contractile efficiency
C. Compensatory tachycardia enhances long-term cardiac output
D. Downregulation of aldosterone promotes progressive ventricular dilation
Correct Answer: A
Rationale: Chronic activation of the sympathetic nervous system and the renin-angiotensin-aldosterone axis initially maintains
cardiac output but ultimately causes myocyte hypertrophy, interstitial fibrosis, apoptosis, and chamber dilation that
progressively impair contractile function. Norepinephrine, angiotensin II, and aldosterone are directly prohypertrophic and
profibrotic mediators, which is why beta blockers and ACE inhibitors improve survival in HFrEF. The Frank-Starling
mechanism (B) fails once myocytes stretch beyond optimal length, chronic tachycardia (C) raises oxygen demand and shortens
diastolic filling time, and aldosterone is upregulated (D) rather than downregulated in heart failure.
Walden University - Graduate Nursing 3
NURS 6501
Advanced
Pathophysiology
A comprehensive final examination review of 150
board-style questions with detailed rationales,
integrating pathophysiologic mechanisms,
laboratory interpretation, and clinical reasoning
across eight body-system domains.
Walden University · NURS 6501 / NURS6501
Aligned with the Course Syllabus, AACN Essentials of
Master's Education, and Advanced Pathophysiology
Competencies
Latest Edition
WA L DE N U N I V E R S I T Y · G R A DU AT E N U R S I N G
,NURS 6501 ADVANCED PATHOPHYSIOLOGY | FINAL EXAM REVIEW GUIDE | WEEKS 7-11
NURS 6501 / NURS6501: ADVANCED PATHOPHYSIOLOGY
FINAL EXAM REVIEW GUIDE - WEEKS 7 - 11 (LATEST )
WALDEN UNIVERSITY | Aligned with the NURS 6501 Course Syllabus, AACN Essentials of Master's Education, and
Advanced Pathophysiology Competencies
Section 1: Cardiovascular Pathophysiology
Q1: Which sequence of events best describes the earliest pathogenesis of an atherosclerotic plaque?
A. Platelet aggregation on an intact endothelial surface with fibrin deposition
B. Endothelial injury permitting low-density lipoprotein infiltration, oxidation, and macrophage-derived foam
cell formation [CORRECT]
C. Proliferation of smooth muscle cells within the intima prior to any lipid accumulation
D. Dystrophic calcification of the tunica media secondary to chronic hypoxia
Correct Answer: B
Rationale: Atherosclerosis begins with endothelial injury or dysfunction, which increases permeability to LDL particles that
become trapped and oxidized within the intima. Circulating monocytes migrate into the vessel wall, differentiate into
macrophages, and engulf oxidized LDL to form foam cells, producing the earliest lesion, the fatty streak. Smooth muscle
proliferation (C), platelet aggregation on disrupted plaque (A), and dystrophic calcification (D) are later events in plaque
evolution. This endothelial injury mechanism is foundational content in the NURS 6501 advanced pathophysiology
curriculum.
Q2: A 62-year-old man reports substernal chest pressure that begins after walking two blocks and resolves within five
minutes of resting. Cardiac biomarkers are negative and the baseline ECG is normal. Which pathophysiologic
mechanism best explains his pain?
A. Spontaneous rupture of an unstable plaque with partial thrombotic occlusion
B. Coronary artery vasospasm unrelated to atherosclerotic burden
C. A fixed atherosclerotic coronary stenosis limiting perfusion during increased myocardial oxygen demand
[CORRECT]
D. Microembolization of platelet aggregates from the left atrial appendage
Correct Answer: C
Rationale: Stable angina results from a fixed coronary stenosis, typically 70 percent or greater, which is adequate at rest but
creates a supply-demand mismatch when exertion increases heart rate, contractility, and wall tension. The pain predictably
occurs with exertion and resolves with rest because myocardial oxygen balance is restored. Plaque rupture with thrombosis (A)
describes unstable angina or myocardial infarction, vasospasm (B) describes variant or Prinzmetal angina, and left atrial
microembolization (D) is not a mechanism of exertional chest pain.
Walden University - Graduate Nursing 1
,NURS 6501 ADVANCED PATHOPHYSIOLOGY | FINAL EXAM REVIEW GUIDE | WEEKS 7-11
Q3: A 58-year-old woman presents to the emergency department 90 minutes after the onset of crushing substernal
chest pain. The initial ECG shows ST depression and the first troponin I is within normal limits. Which laboratory
principle best guides the next diagnostic step?
A. Myoglobin should be ordered because it is the most specific marker of myocardial necrosis
B. CK-MB is superior to troponin because it remains elevated for up to two weeks
C. Troponin testing should be repeated in 2 to 3 hours because troponin I typically becomes detectable within 3
to 4 hours of injury [CORRECT]
D. A normal initial troponin excludes myocardial infarction and no further testing is indicated
Correct Answer: C
Rationale: Cardiac troponin I or T is the most specific biomarker of myocardial injury, rising within approximately 3 to 4
hours of symptom onset, peaking at 18 to 24 hours, and remaining elevated for 7 to 14 days. Serial testing at 2 to 3 hour
intervals is standard because a single early value cannot exclude infarction. Myoglobin (A) appears earliest but is the least
specific marker, CK-MB (B) rises within 4 to 6 hours and normalizes in 2 to 3 days rather than persisting for two weeks, and
an early normal troponin (D) never excludes myocardial infarction in a symptomatic patient.
Q4: Six days after an inferior myocardial infarction, a 71-year-old man suddenly develops pulmonary edema and
hypotension. Auscultation reveals a new holosystolic murmur at the apex radiating to the axilla. Which mechanical
complication most likely occurred?
A. Ventricular free wall rupture with cardiac tamponade
B. Rupture of the posteromedial papillary muscle causing acute mitral regurgitation [CORRECT]
C. Post-infarction ventricular septal defect
D. Ventricular aneurysm with mural thrombus formation
Correct Answer: B
Rationale: Papillary muscle rupture classically occurs 3 to 7 days after infarction and most often involves the posteromedial
papillary muscle, which receives blood supply solely from the posterior descending artery. Loss of chordal support produces
abrupt, severe mitral regurgitation with an apical holosystolic murmur and flash pulmonary edema. Free wall rupture (A)
presents with tamponade and sudden collapse, a post-infarction ventricular septal defect (C) produces a harsh left sternal
border murmur with a palpable thrill, and ventricular aneurysm (D) is a later remodeling complication that causes heart failure
and dysrhythmias rather than acute pulmonary edema.
Q5: Which mechanism best explains sustained blood pressure elevation in primary (essential) hypertension?
A. Excess atrial natriuretic peptide causing sodium retention
B. Chronic suppression of the sympathetic nervous system
C. Decreased renin release from the juxtaglomerular cells
D. Activation of the renin-angiotensin-aldosterone system promoting vasoconstriction and sodium retention
[CORRECT]
Correct Answer: D
Rationale: In essential hypertension, kidneys with relative underperfusion and sympathetic overactivity increase renin release,
generating angiotensin II, a potent vasoconstrictor that also stimulates aldosterone secretion. The resulting sodium and water
retention expands intravascular volume while angiotensin II directly raises peripheral resistance, sustaining elevated afterload.
Atrial natriuretic peptide (A) promotes sodium excretion rather than retention, sympathetic suppression (B) would lower blood
pressure, and renin is increased rather than decreased (C) in most renin-dependent hypertension. This neurohormonal model is
a core NURS 6501 pathophysiology competency.
Walden University - Graduate Nursing 2
, NURS 6501 ADVANCED PATHOPHYSIOLOGY | FINAL EXAM REVIEW GUIDE | WEEKS 7-11
Q6: A 38-year-old woman with resistant hypertension has a serum potassium of 2.8 mEq/L, bicarbonate of 32 mEq/L,
low plasma renin activity, and an elevated serum aldosterone level. CT imaging shows a 2-cm left adrenal nodule.
Which mechanism best explains her hypertension?
A. Renal artery stenosis triggering renin-dependent aldosterone release
B. Catecholamine excess from an adrenal medullary tumor
C. An aldosterone-secreting adenoma causing sodium retention and potassium wasting that is independent of
renin [CORRECT]
D. Excess cortisol activating mineralocorticoid receptors
Correct Answer: C
Rationale: Primary aldosteronism (Conn syndrome) results from an autonomous aldosterone-secreting adenoma that
promotes distal tubular sodium reabsorption and urinary excretion of potassium and hydrogen ion, producing hypertension
with hypokalemic metabolic alkalosis. Because aldosterone secretion is autonomous, plasma renin is characteristically
suppressed. Renal artery stenosis (A) produces secondary hyperaldosteronism with elevated renin, pheochromocytoma (B)
causes paroxysmal hypertension through catecholamine excess, and cortisol excess (D) defines Cushing syndrome, which
additionally produces glucocorticoid manifestations such as central obesity and hyperglycemia.
Q7: A 58-year-old man with heart failure and reduced ejection fraction (LVEF 28 percent) asks why his condition
continues to worsen despite stable coronary disease. Which mechanism best explains this progression?
A. Chronic neurohormonal activation drives maladaptive remodeling with myocyte hypertrophy, fibrosis, and
apoptosis [CORRECT]
B. Persistent elevation of preload progressively improves contractile efficiency
C. Compensatory tachycardia enhances long-term cardiac output
D. Downregulation of aldosterone promotes progressive ventricular dilation
Correct Answer: A
Rationale: Chronic activation of the sympathetic nervous system and the renin-angiotensin-aldosterone axis initially maintains
cardiac output but ultimately causes myocyte hypertrophy, interstitial fibrosis, apoptosis, and chamber dilation that
progressively impair contractile function. Norepinephrine, angiotensin II, and aldosterone are directly prohypertrophic and
profibrotic mediators, which is why beta blockers and ACE inhibitors improve survival in HFrEF. The Frank-Starling
mechanism (B) fails once myocytes stretch beyond optimal length, chronic tachycardia (C) raises oxygen demand and shortens
diastolic filling time, and aldosterone is upregulated (D) rather than downregulated in heart failure.
Walden University - Graduate Nursing 3
