NR507 FINAL EXAM – COMPREHENSIVE
ADVANCED PATHOPHYSIOLOGY REVIEW
CHAMBERLAIN UNIVERSITY ACTUAL EXAM
QUESTIONS AND VERIFIED ANSWERS WITH
RATIONALES GRADED A+ LATEST
Question 1
A 45-year-old male presents with fatigue, pallor, and dyspnea on exertion.
Laboratory studies reveal hemoglobin of 8.5 g/dL, mean corpuscular volume
(MCV) of 70 fL, and serum ferritin of 8 ng/mL. Which condition is most
consistent with these findings?
A. Vitamin B12 deficiency
B. Iron deficiency anemia
C. Aplastic anemia
D. Hemolytic anemia
Answer: B. Iron deficiency anemia
Rationale: Microcytic anemia (low MCV) with low ferritin is classic for iron
deficiency anemia. Vitamin B12 deficiency typically causes macrocytic anemia
(high MCV). Aplastic anemia presents with pancytopenia. Hemolytic anemia often
shows normocytic anemia with elevated reticulocytes.
Question 2
A patient with chronic kidney disease (CKD) develops metabolic acidosis. Which
compensatory mechanism is expected in arterial blood gases?
A. Hypoventilation
B. Hyperventilation
C. Increased renal hydrogen retention
D. Increased bicarbonate excretion
,Answer: B. Hyperventilation
Rationale: Metabolic acidosis leads to compensatory hyperventilation (Kussmaul
respirations) to blow off CO₂ and reduce acidity. The kidneys attempt to retain
bicarbonate and excrete hydrogen, but hyperventilation is the immediate
respiratory compensation.
Question 3
A 30-year-old woman presents with recurrent episodes of diarrhea, flushing, and
wheezing. Labs reveal elevated urinary 5-hydroxyindoleacetic acid (5-HIAA).
What is the most likely diagnosis?
A. Ulcerative colitis
B. Carcinoid syndrome
C. Irritable bowel syndrome
D. Celiac disease
Answer: B. Carcinoid syndrome
Rationale: Carcinoid tumors secrete serotonin, leading to diarrhea, flushing, and
bronchospasm. Elevated 5-HIAA in urine is diagnostic. Other conditions do not
cause serotonin overproduction.
Question 4
A patient presents with fever, productive cough, and shortness of breath. Chest X-
ray shows consolidation in the right lower lobe. Which pathophysiologic process is
responsible for the consolidation?
A. Alveolar collapse due to surfactant deficiency
B. Accumulation of inflammatory exudate in alveoli
C. Interstitial edema from left-sided heart failure
D. Bronchial smooth muscle hyperactivity
Answer: B. Accumulation of inflammatory exudate in alveoli
,Rationale: Pneumonia causes alveolar filling with inflammatory cells and exudate,
leading to consolidation visible on X-ray. Surfactant deficiency causes atelectasis,
interstitial edema causes diffuse infiltrates, and bronchial hyperactivity is seen in
asthma.
Question 5
A 65-year-old male with a history of hypertension presents with sudden left-sided
weakness and slurred speech. CT scan shows an infarct in the right middle cerebral
artery (MCA) territory. Which deficit is most likely?
A. Left-sided hemiplegia and aphasia
B. Right-sided hemiplegia and aphasia
C. Left-sided hemiplegia and neglect
D. Right-sided hemiplegia and neglect
Answer: C. Left-sided hemiplegia and neglect
Rationale: The right MCA supplies the lateral aspect of the cerebral hemisphere.
Right MCA stroke causes left-sided motor deficits and left-sided neglect. Aphasia
occurs with left MCA strokes in most individuals.
Question 6
Which mechanism best explains insulin resistance in type 2 diabetes mellitus?
A. Autoimmune destruction of beta cells
B. Increased hepatic gluconeogenesis
C. Downregulation of insulin receptors and post-receptor signaling defects
D. Excessive renal glucose reabsorption
Answer: C. Downregulation of insulin receptors and post-receptor signaling
defects
, Rationale: Type 2 diabetes involves decreased insulin sensitivity due to receptor
downregulation and post-receptor defects. Autoimmune destruction is
characteristic of type 1 diabetes. Hepatic gluconeogenesis increases secondary to
insulin resistance.
Question 7
A patient develops a DVT after surgery. Which factor contributes to Virchow's
triad in this patient?
A. Hypocoagulable state
B. Hypervolemia
C. Venous stasis
D. High-grade fever
Answer: C. Venous stasis
Rationale: Virchow’s triad includes stasis of blood flow, endothelial injury, and
hypercoagulability. Postoperative immobility contributes to venous stasis,
predisposing to DVT formation.
Question 8
A patient presents with polyuria, polydipsia, and a fasting blood glucose of 220
mg/dL. Which of the following best explains the polyuria?
A. Renal tubular necrosis
B. Osmotic diuresis due to hyperglycemia
C. Excessive ADH secretion
D. Hyperaldosteronism
Answer: B. Osmotic diuresis due to hyperglycemia
Rationale: High glucose levels in the blood exceed renal tubular reabsorption
capacity, causing osmotic diuresis and polyuria. ADH would decrease urine output,
and aldosterone increases sodium reabsorption, not glucose-mediated diuresis.
ADVANCED PATHOPHYSIOLOGY REVIEW
CHAMBERLAIN UNIVERSITY ACTUAL EXAM
QUESTIONS AND VERIFIED ANSWERS WITH
RATIONALES GRADED A+ LATEST
Question 1
A 45-year-old male presents with fatigue, pallor, and dyspnea on exertion.
Laboratory studies reveal hemoglobin of 8.5 g/dL, mean corpuscular volume
(MCV) of 70 fL, and serum ferritin of 8 ng/mL. Which condition is most
consistent with these findings?
A. Vitamin B12 deficiency
B. Iron deficiency anemia
C. Aplastic anemia
D. Hemolytic anemia
Answer: B. Iron deficiency anemia
Rationale: Microcytic anemia (low MCV) with low ferritin is classic for iron
deficiency anemia. Vitamin B12 deficiency typically causes macrocytic anemia
(high MCV). Aplastic anemia presents with pancytopenia. Hemolytic anemia often
shows normocytic anemia with elevated reticulocytes.
Question 2
A patient with chronic kidney disease (CKD) develops metabolic acidosis. Which
compensatory mechanism is expected in arterial blood gases?
A. Hypoventilation
B. Hyperventilation
C. Increased renal hydrogen retention
D. Increased bicarbonate excretion
,Answer: B. Hyperventilation
Rationale: Metabolic acidosis leads to compensatory hyperventilation (Kussmaul
respirations) to blow off CO₂ and reduce acidity. The kidneys attempt to retain
bicarbonate and excrete hydrogen, but hyperventilation is the immediate
respiratory compensation.
Question 3
A 30-year-old woman presents with recurrent episodes of diarrhea, flushing, and
wheezing. Labs reveal elevated urinary 5-hydroxyindoleacetic acid (5-HIAA).
What is the most likely diagnosis?
A. Ulcerative colitis
B. Carcinoid syndrome
C. Irritable bowel syndrome
D. Celiac disease
Answer: B. Carcinoid syndrome
Rationale: Carcinoid tumors secrete serotonin, leading to diarrhea, flushing, and
bronchospasm. Elevated 5-HIAA in urine is diagnostic. Other conditions do not
cause serotonin overproduction.
Question 4
A patient presents with fever, productive cough, and shortness of breath. Chest X-
ray shows consolidation in the right lower lobe. Which pathophysiologic process is
responsible for the consolidation?
A. Alveolar collapse due to surfactant deficiency
B. Accumulation of inflammatory exudate in alveoli
C. Interstitial edema from left-sided heart failure
D. Bronchial smooth muscle hyperactivity
Answer: B. Accumulation of inflammatory exudate in alveoli
,Rationale: Pneumonia causes alveolar filling with inflammatory cells and exudate,
leading to consolidation visible on X-ray. Surfactant deficiency causes atelectasis,
interstitial edema causes diffuse infiltrates, and bronchial hyperactivity is seen in
asthma.
Question 5
A 65-year-old male with a history of hypertension presents with sudden left-sided
weakness and slurred speech. CT scan shows an infarct in the right middle cerebral
artery (MCA) territory. Which deficit is most likely?
A. Left-sided hemiplegia and aphasia
B. Right-sided hemiplegia and aphasia
C. Left-sided hemiplegia and neglect
D. Right-sided hemiplegia and neglect
Answer: C. Left-sided hemiplegia and neglect
Rationale: The right MCA supplies the lateral aspect of the cerebral hemisphere.
Right MCA stroke causes left-sided motor deficits and left-sided neglect. Aphasia
occurs with left MCA strokes in most individuals.
Question 6
Which mechanism best explains insulin resistance in type 2 diabetes mellitus?
A. Autoimmune destruction of beta cells
B. Increased hepatic gluconeogenesis
C. Downregulation of insulin receptors and post-receptor signaling defects
D. Excessive renal glucose reabsorption
Answer: C. Downregulation of insulin receptors and post-receptor signaling
defects
, Rationale: Type 2 diabetes involves decreased insulin sensitivity due to receptor
downregulation and post-receptor defects. Autoimmune destruction is
characteristic of type 1 diabetes. Hepatic gluconeogenesis increases secondary to
insulin resistance.
Question 7
A patient develops a DVT after surgery. Which factor contributes to Virchow's
triad in this patient?
A. Hypocoagulable state
B. Hypervolemia
C. Venous stasis
D. High-grade fever
Answer: C. Venous stasis
Rationale: Virchow’s triad includes stasis of blood flow, endothelial injury, and
hypercoagulability. Postoperative immobility contributes to venous stasis,
predisposing to DVT formation.
Question 8
A patient presents with polyuria, polydipsia, and a fasting blood glucose of 220
mg/dL. Which of the following best explains the polyuria?
A. Renal tubular necrosis
B. Osmotic diuresis due to hyperglycemia
C. Excessive ADH secretion
D. Hyperaldosteronism
Answer: B. Osmotic diuresis due to hyperglycemia
Rationale: High glucose levels in the blood exceed renal tubular reabsorption
capacity, causing osmotic diuresis and polyuria. ADH would decrease urine output,
and aldosterone increases sodium reabsorption, not glucose-mediated diuresis.
