NUR 635 MIDTERM EXAM – ADVANCED PATHOPHYSIOLOGY GRAND CANYON UNIVERSITY
(GCU) – QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS
RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE | EXAM PREP | STUDY GUIDE |
PRACTICE TEST
1. A patient with long-standing hypertension develops left ventricular hypertrophy. Which
pathophysiologic mechanism most directly contributes to this adaptation?
A. Cellular atrophy
B. Increased apoptotic activity
C. Increased workload leading to myocyte enlargement
D. Fatty infiltration of myocardial tissue
════════════════════
Correct Answer: C. Increased workload leading to myocyte enlargement
Rationale:
Increased afterload from hypertension causes cardiac muscle cells to enlarge to generate
greater contractile force. This compensatory hypertrophy initially helps maintain cardiac
output. The other options do not represent the primary adaptive response to chronic pressure
overload.
════════════════════
2. A nurse reviews laboratory findings for a patient with acute inflammation. Which
laboratory value is most likely elevated?
A. C-reactive protein
B. Serum albumin
C. Calcium
D. Hemoglobin
════════════════════
Correct Answer: A. C-reactive protein
Rationale:
C-reactive protein is an acute-phase reactant produced by the liver during inflammation.
Albumin commonly decreases during inflammatory states, while calcium and hemoglobin are
not reliable indicators of acute inflammation.
,════════════════════
3. Which cellular process is primarily responsible for removing damaged organelles and
proteins within a cell?
A. Necrosis
B. Autophagy
C. Hyperplasia
D. Dysplasia
════════════════════
Correct Answer: B. Autophagy
Rationale:
Autophagy is a regulated mechanism that degrades and recycles damaged cellular
components. Necrosis is uncontrolled cell death, while hyperplasia and dysplasia involve
changes in cellular growth patterns.
════════════════════
4. A patient experiences an anaphylactic reaction after exposure to peanuts. Which
immunoglobulin is most directly involved?
A. IgA
B. IgG
C. IgM
D. IgE
════════════════════
Correct Answer: D. IgE
Rationale:
IgE binds to mast cells and basophils, triggering histamine release during allergic reactions.
IgA protects mucosal surfaces, IgG provides long-term immunity, and IgM is associated with
primary immune responses.
════════════════════
5. Which electrolyte abnormality is most commonly associated with cardiac dysrhythmias?
,A. Hyperkalemia
B. Hypermagnesemia
C. Hyperphosphatemia
D. Hypernatremia
════════════════════
Correct Answer: A. Hyperkalemia
Rationale:
Potassium plays a critical role in cardiac electrical conduction. Elevated potassium levels can
significantly alter membrane potentials and precipitate life-threatening dysrhythmias.
════════════════════
6. A patient develops edema due to reduced plasma oncotic pressure. Which condition is the
most likely cause?
A. Polycythemia
B. Hypoalbuminemia
C. Hypertension
D. Hyperglycemia
════════════════════
Correct Answer: B. Hypoalbuminemia
Rationale:
Albumin maintains plasma oncotic pressure. Low albumin levels allow fluid to shift into the
interstitial space, producing edema. The other conditions do not directly reduce oncotic
pressure.
════════════════════
7. Which statement best describes apoptosis?
A. Uncontrolled inflammatory cell death
B. Programmed cell death
C. Bacterial destruction of tissue
D. Ischemic tissue necrosis
, ════════════════════
Correct Answer: B. Programmed cell death
Rationale:
Apoptosis is an organized, energy-dependent process that removes damaged or unnecessary
cells without provoking significant inflammation.
════════════════════
8. A patient with chronic kidney disease develops metabolic acidosis. What is the primary
cause?
A. Excessive bicarbonate production
B. Reduced acid excretion
C. Excess insulin secretion
D. Increased oxygen delivery
════════════════════
Correct Answer: B. Reduced acid excretion
Rationale:
Impaired kidney function limits hydrogen ion excretion and bicarbonate regulation, resulting
in metabolic acidosis.
════════════════════
9. Which mediator is primarily responsible for vasodilation during inflammation?
A. Histamine
B. Fibrinogen
C. Hemoglobin
D. Albumin
════════════════════
Correct Answer: A. Histamine
Rationale:
Histamine released from mast cells rapidly increases vasodilation and vascular permeability
during inflammatory responses.
(GCU) – QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS
RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE | EXAM PREP | STUDY GUIDE |
PRACTICE TEST
1. A patient with long-standing hypertension develops left ventricular hypertrophy. Which
pathophysiologic mechanism most directly contributes to this adaptation?
A. Cellular atrophy
B. Increased apoptotic activity
C. Increased workload leading to myocyte enlargement
D. Fatty infiltration of myocardial tissue
════════════════════
Correct Answer: C. Increased workload leading to myocyte enlargement
Rationale:
Increased afterload from hypertension causes cardiac muscle cells to enlarge to generate
greater contractile force. This compensatory hypertrophy initially helps maintain cardiac
output. The other options do not represent the primary adaptive response to chronic pressure
overload.
════════════════════
2. A nurse reviews laboratory findings for a patient with acute inflammation. Which
laboratory value is most likely elevated?
A. C-reactive protein
B. Serum albumin
C. Calcium
D. Hemoglobin
════════════════════
Correct Answer: A. C-reactive protein
Rationale:
C-reactive protein is an acute-phase reactant produced by the liver during inflammation.
Albumin commonly decreases during inflammatory states, while calcium and hemoglobin are
not reliable indicators of acute inflammation.
,════════════════════
3. Which cellular process is primarily responsible for removing damaged organelles and
proteins within a cell?
A. Necrosis
B. Autophagy
C. Hyperplasia
D. Dysplasia
════════════════════
Correct Answer: B. Autophagy
Rationale:
Autophagy is a regulated mechanism that degrades and recycles damaged cellular
components. Necrosis is uncontrolled cell death, while hyperplasia and dysplasia involve
changes in cellular growth patterns.
════════════════════
4. A patient experiences an anaphylactic reaction after exposure to peanuts. Which
immunoglobulin is most directly involved?
A. IgA
B. IgG
C. IgM
D. IgE
════════════════════
Correct Answer: D. IgE
Rationale:
IgE binds to mast cells and basophils, triggering histamine release during allergic reactions.
IgA protects mucosal surfaces, IgG provides long-term immunity, and IgM is associated with
primary immune responses.
════════════════════
5. Which electrolyte abnormality is most commonly associated with cardiac dysrhythmias?
,A. Hyperkalemia
B. Hypermagnesemia
C. Hyperphosphatemia
D. Hypernatremia
════════════════════
Correct Answer: A. Hyperkalemia
Rationale:
Potassium plays a critical role in cardiac electrical conduction. Elevated potassium levels can
significantly alter membrane potentials and precipitate life-threatening dysrhythmias.
════════════════════
6. A patient develops edema due to reduced plasma oncotic pressure. Which condition is the
most likely cause?
A. Polycythemia
B. Hypoalbuminemia
C. Hypertension
D. Hyperglycemia
════════════════════
Correct Answer: B. Hypoalbuminemia
Rationale:
Albumin maintains plasma oncotic pressure. Low albumin levels allow fluid to shift into the
interstitial space, producing edema. The other conditions do not directly reduce oncotic
pressure.
════════════════════
7. Which statement best describes apoptosis?
A. Uncontrolled inflammatory cell death
B. Programmed cell death
C. Bacterial destruction of tissue
D. Ischemic tissue necrosis
, ════════════════════
Correct Answer: B. Programmed cell death
Rationale:
Apoptosis is an organized, energy-dependent process that removes damaged or unnecessary
cells without provoking significant inflammation.
════════════════════
8. A patient with chronic kidney disease develops metabolic acidosis. What is the primary
cause?
A. Excessive bicarbonate production
B. Reduced acid excretion
C. Excess insulin secretion
D. Increased oxygen delivery
════════════════════
Correct Answer: B. Reduced acid excretion
Rationale:
Impaired kidney function limits hydrogen ion excretion and bicarbonate regulation, resulting
in metabolic acidosis.
════════════════════
9. Which mediator is primarily responsible for vasodilation during inflammation?
A. Histamine
B. Fibrinogen
C. Hemoglobin
D. Albumin
════════════════════
Correct Answer: A. Histamine
Rationale:
Histamine released from mast cells rapidly increases vasodilation and vascular permeability
during inflammatory responses.
