NURS 6501 ADVANCED PATHOPHYSIOLOGY
WALDEN UNIVERSITY MIDTERM EXAM
COMPLETE QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
Q1
A patient with severe hemorrhage after trauma develops
cool extremities, hypotension, and tachycardia. Which
cellular mechanism is most responsible for early tissue
dysfunction?
A. Increased ATP production via anaerobic glycolysis
B. Failure of Na⁺/K⁺ ATPase pump due to ATP depletion
C. Excess protein synthesis in mitochondria
D. Increased oxygen diffusion across membranes
Answer: B
Rationale: Hemorrhagic shock reduces oxygen delivery
leading to ATP depletion and failure of membrane ion
pumps.
Q2
,A diabetic patient develops neuropathy after years of
uncontrolled hyperglycemia. Which mechanism best
explains this complication?
A. Autoimmune destruction of neurons
B. Sorbitol accumulation causing osmotic injury
C. Increased insulin receptor sensitivity
D. Excess dopamine depletion
Answer: B
Rationale: Chronic hyperglycemia activates the polyol
pathway causing sorbitol buildup and nerve damage.
Q3
A hospitalized patient develops fever, tachycardia, and
leukocytosis after bacterial infection. Which cytokine is
most responsible for initiating fever response?
A. Interleukin-1 (IL-1)
B. Albumin
C. Erythropoietin
D. Insulin
Answer: A
Rationale: IL-1 acts as an endogenous pyrogen triggering
hypothalamic temperature elevation.
,Q4
A patient with chronic hypertension develops left
ventricular hypertrophy. Which cellular adaptation is
primarily involved?
A. Atrophy due to decreased workload
B. Hyperplasia of cardiac myocytes
C. Hypertrophy of myocardial cells
D. Metaplasia of endocardial tissue
Answer: C
Rationale: Increased pressure load causes myocardial cells
to enlarge (hypertrophy).
Q5
A patient with COPD has persistent hypercapnia and
respiratory acidosis. What is the primary pathophysiologic
cause?
A. Increased alveolar ventilation
B. Impaired CO₂ excretion due to airway obstruction
C. Excess oxygen therapy
D. Increased lung compliance
Answer: B
Rationale: Airflow limitation traps CO₂ leading to
respiratory acidosis.
, Q6
A patient in septic shock presents with warm, flushed skin
and hypotension. What mechanism explains this
presentation?
A. Vasoconstriction and decreased cardiac output
B. Systemic vasodilation due to inflammatory mediators
C. Increased blood viscosity
D. Increased erythrocyte production
Answer: B
Rationale: Sepsis causes cytokine-mediated vasodilation
reducing vascular resistance.
Q7
A patient with acute myocardial infarction has elevated
troponin levels. What does this biomarker indicate?
A. Liver cell regeneration
B. Skeletal muscle breakdown
C. Cardiac myocyte necrosis
D. Renal tubular regeneration
Answer: C
Rationale: Troponin is released when cardiac muscle cells
are damaged.
WALDEN UNIVERSITY MIDTERM EXAM
COMPLETE QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
Q1
A patient with severe hemorrhage after trauma develops
cool extremities, hypotension, and tachycardia. Which
cellular mechanism is most responsible for early tissue
dysfunction?
A. Increased ATP production via anaerobic glycolysis
B. Failure of Na⁺/K⁺ ATPase pump due to ATP depletion
C. Excess protein synthesis in mitochondria
D. Increased oxygen diffusion across membranes
Answer: B
Rationale: Hemorrhagic shock reduces oxygen delivery
leading to ATP depletion and failure of membrane ion
pumps.
Q2
,A diabetic patient develops neuropathy after years of
uncontrolled hyperglycemia. Which mechanism best
explains this complication?
A. Autoimmune destruction of neurons
B. Sorbitol accumulation causing osmotic injury
C. Increased insulin receptor sensitivity
D. Excess dopamine depletion
Answer: B
Rationale: Chronic hyperglycemia activates the polyol
pathway causing sorbitol buildup and nerve damage.
Q3
A hospitalized patient develops fever, tachycardia, and
leukocytosis after bacterial infection. Which cytokine is
most responsible for initiating fever response?
A. Interleukin-1 (IL-1)
B. Albumin
C. Erythropoietin
D. Insulin
Answer: A
Rationale: IL-1 acts as an endogenous pyrogen triggering
hypothalamic temperature elevation.
,Q4
A patient with chronic hypertension develops left
ventricular hypertrophy. Which cellular adaptation is
primarily involved?
A. Atrophy due to decreased workload
B. Hyperplasia of cardiac myocytes
C. Hypertrophy of myocardial cells
D. Metaplasia of endocardial tissue
Answer: C
Rationale: Increased pressure load causes myocardial cells
to enlarge (hypertrophy).
Q5
A patient with COPD has persistent hypercapnia and
respiratory acidosis. What is the primary pathophysiologic
cause?
A. Increased alveolar ventilation
B. Impaired CO₂ excretion due to airway obstruction
C. Excess oxygen therapy
D. Increased lung compliance
Answer: B
Rationale: Airflow limitation traps CO₂ leading to
respiratory acidosis.
, Q6
A patient in septic shock presents with warm, flushed skin
and hypotension. What mechanism explains this
presentation?
A. Vasoconstriction and decreased cardiac output
B. Systemic vasodilation due to inflammatory mediators
C. Increased blood viscosity
D. Increased erythrocyte production
Answer: B
Rationale: Sepsis causes cytokine-mediated vasodilation
reducing vascular resistance.
Q7
A patient with acute myocardial infarction has elevated
troponin levels. What does this biomarker indicate?
A. Liver cell regeneration
B. Skeletal muscle breakdown
C. Cardiac myocyte necrosis
D. Renal tubular regeneration
Answer: C
Rationale: Troponin is released when cardiac muscle cells
are damaged.
