1|Page
NSG 530 FINAL EXAM 2026) ADVANCED PATHOPHYSIOLOGY |
120 QUESTIONS WITH 100 % CORRECT ANSWERS &
RATIONALES, ALREADY GRADED A+
1. A 52-year-old male presents with progressive fatigue, pallor, and
shortness of breath. Laboratory tests reveal decreased hemoglobin, low
hematocrit, and microcytic hypochromic red blood cells. Which underlying
process most likely explains his anemia?
A. Defective DNA synthesis due to B12 deficiency
B. Chronic blood loss leading to iron depletion
C. Autoimmune destruction of red blood cells
D. Reduced erythropoietin production by kidneys
Correct Answer: B
Rationale: Microcytic hypochromic anemia is most commonly caused by
iron deficiency, often due to chronic blood loss (e.g., GI bleeding).
2. A patient with chronic kidney disease develops metabolic acidosis. Which
mechanism best explains this acid–base disturbance?
A. Increased bicarbonate reabsorption in the proximal tubule
B. Decreased hydrogen ion secretion and reduced bicarbonate regeneration
,2|Page
C. Excess lactic acid production in skeletal muscle
D. Hyperventilation leading to CO₂ loss
Correct Answer: B
Rationale: In renal failure, impaired excretion of hydrogen ions and reduced
bicarbonate regeneration cause metabolic acidosis.
3. During the inflammatory response, which vascular change is primarily
responsible for the local swelling and edema seen in acute inflammation?
A. Vasoconstriction of arterioles
B. Increased capillary hydrostatic pressure
C. Increased vascular permeability due to histamine release
D. Lymphatic obstruction by neutrophils
Correct Answer: C
Rationale: Histamine and other mediators increase vascular permeability,
allowing plasma proteins and fluid to leak into tissues, producing edema.
4. A 68-year-old smoker presents with chronic productive cough and
progressive dyspnea. Pulmonary function tests show decreased FEV1/FVC
ratio and increased residual volume. What pathophysiological process
underlies this disease?
A. Loss of alveolar elastic recoil due to emphysema
B. Restrictive lung fibrosis limiting expansion
,3|Page
C. Airway hyperresponsiveness to allergens
D. Pulmonary embolism reducing perfusion
Correct Answer: A
Rationale: Emphysema, a COPD subtype, is caused by destruction of
alveolar walls and loss of elastic recoil, resulting in air trapping.
5. A patient with heart failure develops pulmonary edema. Which
pathophysiological mechanism best explains this condition?
A. Increased oncotic pressure within pulmonary capillaries
B. Increased hydrostatic pressure in pulmonary circulation
C. Reduced alveolar surfactant production
D. Obstruction of lymphatic drainage
Correct Answer: B
Rationale: Left-sided heart failure elevates pulmonary venous and capillary
hydrostatic pressure, pushing fluid into alveolar spaces.
6. A 33-year-old woman develops tachycardia, heat intolerance, and weight
loss despite increased appetite. Laboratory tests show low TSH and elevated
free T4. Which disorder is most consistent with these findings?
A. Hashimoto’s thyroiditis
B. Graves’ disease
, 4|Page
C. Subclinical hypothyroidism
D. Cushing’s syndrome
Correct Answer: B
Rationale: Graves’ disease is an autoimmune condition where antibodies
stimulate TSH receptors, causing hyperthyroidism with suppressed TSH
levels.
7. In type 2 diabetes mellitus, which mechanism contributes most to
hyperglycemia in early disease progression?
A. Autoimmune destruction of pancreatic β-cells
B. Peripheral insulin resistance in muscle and adipose tissue
C. Increased insulin receptor sensitivity
D. Reduced cortisol secretion
Correct Answer: B
Rationale: Type 2 diabetes is characterized initially by insulin resistance in
peripheral tissues, with compensatory hyperinsulinemia.
8. A patient develops jaundice, dark urine, and elevated unconjugated
bilirubin. Which mechanism best explains this clinical presentation?
A. Increased breakdown of red blood cells
B. Obstruction of bile ducts
NSG 530 FINAL EXAM 2026) ADVANCED PATHOPHYSIOLOGY |
120 QUESTIONS WITH 100 % CORRECT ANSWERS &
RATIONALES, ALREADY GRADED A+
1. A 52-year-old male presents with progressive fatigue, pallor, and
shortness of breath. Laboratory tests reveal decreased hemoglobin, low
hematocrit, and microcytic hypochromic red blood cells. Which underlying
process most likely explains his anemia?
A. Defective DNA synthesis due to B12 deficiency
B. Chronic blood loss leading to iron depletion
C. Autoimmune destruction of red blood cells
D. Reduced erythropoietin production by kidneys
Correct Answer: B
Rationale: Microcytic hypochromic anemia is most commonly caused by
iron deficiency, often due to chronic blood loss (e.g., GI bleeding).
2. A patient with chronic kidney disease develops metabolic acidosis. Which
mechanism best explains this acid–base disturbance?
A. Increased bicarbonate reabsorption in the proximal tubule
B. Decreased hydrogen ion secretion and reduced bicarbonate regeneration
,2|Page
C. Excess lactic acid production in skeletal muscle
D. Hyperventilation leading to CO₂ loss
Correct Answer: B
Rationale: In renal failure, impaired excretion of hydrogen ions and reduced
bicarbonate regeneration cause metabolic acidosis.
3. During the inflammatory response, which vascular change is primarily
responsible for the local swelling and edema seen in acute inflammation?
A. Vasoconstriction of arterioles
B. Increased capillary hydrostatic pressure
C. Increased vascular permeability due to histamine release
D. Lymphatic obstruction by neutrophils
Correct Answer: C
Rationale: Histamine and other mediators increase vascular permeability,
allowing plasma proteins and fluid to leak into tissues, producing edema.
4. A 68-year-old smoker presents with chronic productive cough and
progressive dyspnea. Pulmonary function tests show decreased FEV1/FVC
ratio and increased residual volume. What pathophysiological process
underlies this disease?
A. Loss of alveolar elastic recoil due to emphysema
B. Restrictive lung fibrosis limiting expansion
,3|Page
C. Airway hyperresponsiveness to allergens
D. Pulmonary embolism reducing perfusion
Correct Answer: A
Rationale: Emphysema, a COPD subtype, is caused by destruction of
alveolar walls and loss of elastic recoil, resulting in air trapping.
5. A patient with heart failure develops pulmonary edema. Which
pathophysiological mechanism best explains this condition?
A. Increased oncotic pressure within pulmonary capillaries
B. Increased hydrostatic pressure in pulmonary circulation
C. Reduced alveolar surfactant production
D. Obstruction of lymphatic drainage
Correct Answer: B
Rationale: Left-sided heart failure elevates pulmonary venous and capillary
hydrostatic pressure, pushing fluid into alveolar spaces.
6. A 33-year-old woman develops tachycardia, heat intolerance, and weight
loss despite increased appetite. Laboratory tests show low TSH and elevated
free T4. Which disorder is most consistent with these findings?
A. Hashimoto’s thyroiditis
B. Graves’ disease
, 4|Page
C. Subclinical hypothyroidism
D. Cushing’s syndrome
Correct Answer: B
Rationale: Graves’ disease is an autoimmune condition where antibodies
stimulate TSH receptors, causing hyperthyroidism with suppressed TSH
levels.
7. In type 2 diabetes mellitus, which mechanism contributes most to
hyperglycemia in early disease progression?
A. Autoimmune destruction of pancreatic β-cells
B. Peripheral insulin resistance in muscle and adipose tissue
C. Increased insulin receptor sensitivity
D. Reduced cortisol secretion
Correct Answer: B
Rationale: Type 2 diabetes is characterized initially by insulin resistance in
peripheral tissues, with compensatory hyperinsulinemia.
8. A patient develops jaundice, dark urine, and elevated unconjugated
bilirubin. Which mechanism best explains this clinical presentation?
A. Increased breakdown of red blood cells
B. Obstruction of bile ducts
