NSG 530 ADVANCED PATHOPHYSIOLOGY EXAM 1 2026/2027 | WILKES UNIVERSITY | VERIFIED PRACTICE QUESTIONS & DETAILED ANSWERS

NSG 530 ADVANCED PATHOPHYSIOLOGY
EXAM 1 2026/2027 | WILKES UNIVERSITY |
VERIFIED PRACTICE QUESTIONS &
DETAILED ANSWERS
NSG 530 ADVANCED PATHOPHYSIOLOGY EXAM 1 2026/2027 WILKES
UNIVERSITY | VERIFIED PRACTICE QUESTIONS & DETAILED ANSWERS

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DOCUMENT OVERVIEW

• This practice exam contains verified multiple-choice questions covering
comprehensive pathophysiology concepts at the graduate nursing level, designed
to reinforce critical thinking and clinical application across all major body systems.

• Study this material by reviewing each question thoroughly, attempting answers
before checking solutions, and using the detailed rationales to understand the
pathophysiologic mechanisms—focus on the "why" behind each correct answer for
optimal retention and clinical competency.

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QUESTION 1

Which of the following best describes the cellular response when oxygen
delivery is severely compromised, leading to anaerobic metabolism?

A) Increased ATP production through oxidative phosphorylation

B) Activation of gluconeogenesis in the mitochondria

C) Accumulation of lactate and hydrogen ions, resulting in metabolic acidosis

D) Enhanced glycogen synthesis for immediate energy storage

E) Increased oxygen binding affinity of hemoglobin

CORRECT ANSWER: C) Accumulation of lactate and hydrogen ions, resulting in
metabolic acidosis

,RATIONALE: When cells shift to anaerobic metabolism due to severe hypoxia,
glucose is metabolized through glycolysis without the subsequent oxidation in the
electron transport chain. This process produces pyruvate, which is converted to
lactate to regenerate NAD+ for continued glycolysis. The accumulation of lactate
and hydrogen ions causes metabolic acidosis. Options A and B are incorrect
because they describe aerobic processes. Option D misrepresents the body's
response during hypoxia. Option E describes compensatory respiratory changes,
not the direct cellular response to hypoxia.

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QUESTION 2

A 58-year-old male with chronic hypertension develops left ventricular
hypertrophy. Which pathophysiologic mechanism is primarily responsible for
this adaptation?

A) Decreased afterload requiring increased muscle mass

B) Increased wall stress triggering growth factor synthesis and protein
accumulation

C) Reduced contractility necessitating additional myocardial tissue

D) Increased preload from fluid retention

E) Decreased sympathetic nervous system activity

CORRECT ANSWER: B) Increased wall stress triggering growth factor synthesis
and protein accumulation

RATIONALE: According to Laplace's law, chronic elevations in arterial pressure
increase wall stress on the left ventricle. This mechanical stress stimulates cardiac
myocytes to synthesize new contractile proteins and growth factors (including
angiotensin II and transforming growth factor-beta), leading to concentric
hypertrophy. Option A is incorrect as afterload increases with hypertension. Option
C misrepresents contractility mechanisms. Options D and E do not address the
primary stimulus for hypertrophic remodeling.

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QUESTION 3

Which of the following is the primary pathophysiologic consequence of
atherosclerotic plaque rupture in a coronary artery?

A) Gradual narrowing of the arterial lumen over several weeks

B) Platelet aggregation and thrombus formation on the exposed lipid core

C) Increased blood flow velocity through the stenotic segment

D) Migration of smooth muscle cells to the intima

E) Enhanced endothelial cell proliferation

CORRECT ANSWER: B) Platelet aggregation and thrombus formation on the
exposed lipid core

RATIONALE: When an atherosclerotic plaque ruptures, the lipid core becomes
exposed to circulating blood components. The exposed collagen and tissue factor
(TF) activate platelet adhesion and aggregation, with simultaneous initiation of the
coagulation cascade. This results in rapid thrombus formation that can occlude the
coronary artery and precipitate acute myocardial infarction. Option A describes the
chronic progression of atherosclerosis. Options C, D, and E do not address the
acute consequences of plaque rupture.

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QUESTION 4

A patient presenting with acute respiratory distress syndrome (ARDS)
demonstrates severe hypoxemia despite high supplemental oxygen. Which
pulmonary pathophysiologic mechanism best explains this finding?

A) Increased airway resistance preventing ventilation

B) Ventilation-perfusion (V/Q) mismatch with shunting through fluid-filled alveoli

C) Decreased elastic recoil of lung tissue

, D) Hyperventilation-induced respiratory alkalosis

E) Reduced cardiac output decreasing pulmonary circulation

CORRECT ANSWER: B) Ventilation-perfusion (V/Q) mismatch with shunting
through fluid-filled alveoli

RATIONALE: In ARDS, inflammatory mediators increase pulmonary capillary
permeability, causing protein-rich fluid to accumulate in alveolar spaces. This
results in true physiologic shunting, where blood perfuses non-ventilated alveoli
and returns to the systemic circulation deoxygenated, bypassing ventilated areas.
This explains the refractory hypoxemia despite supplemental oxygen. Option A
addresses flow obstruction, not the pathology of ARDS. Option C relates to elastic
properties. Options D and E are not primary mechanisms in ARDS pathophysiology.

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QUESTION 5

Which inflammatory mediator is primarily responsible for vasodilation and
increased vascular permeability in the acute inflammatory response?

A) Bradykinin and leukotrienes

B) Histamine and prostaglandin E2

C) Tumor necrosis factor-alpha (TNF-α)

D) Complement fragment C3a

E) Interleukin-12 (IL-12)

CORRECT ANSWER: B) Histamine and prostaglandin E2

RATIONALE: Histamine is released from mast cells and basophils and acts on H1
and H2 receptors to cause immediate vasodilation and endothelial cell contraction,
increasing vascular permeability. Prostaglandin E2 (PGE2) is a potent vasodilator
produced by COX-2 enzyme induction. Together, these mediators are responsible
for the cardinal signs of acute inflammation (heat, redness, swelling). Option A
describes pain and smooth muscle contraction. Options C and D are pro-