NSG 5140 ADVANCED
PATHOPHYSIOLOGY FINAL EXAM
QUESTIONS AND ANSWERS
1. A 55-year-old male presents with persistent cough, exertional dyspnea, and a history of
smoking. Spirometry reveals a decreased FEV1/FVC ratio that does not significantly improve
with bronchodilators. Which pathological change is most characteristic of his condition?
A. Hypertrophy of bronchial smooth muscle and eosinophilic infiltration
B. Destruction of alveolar walls and enlargement of air spaces distal to terminal
bronchioles
C. Reversible airway narrowing caused by immunoglobulin E mediated response
D. Formation of non-caseating granulomas in the pulmonary parenchyma
Answer: B
Conceptual Explanation: The description points to COPD, specifically emphysema, which
is characterized by the permanent enlargement of gas-exchange airways and destruction of
alveolar walls without obvious fibrosis.
,2. In the context of Heart Failure with Preserved Ejection Fraction (HFpEF), which
physiological mechanism is primarily responsible for the clinical symptoms?
A. Significant reduction in myocardial contractility and stroke volume
B. Impaired ventricular relaxation and increased stiffness during diastole
C. Excessive dilation of the left ventricle leading to mitral valve regurgitation
D. Obstruction of the left ventricular outflow tract due to septal hypertrophy
Answer: B
Conceptual Explanation: HFpEF is primarily a diastolic dysfunction issue where the heart
cannot relax properly to fill with blood, despite having a near-normal ejection fraction.
3. A patient exhibits high serum calcium levels and low serum phosphate levels. A bone scan
reveals increased osteoclast activity. Which hormone is most likely elevated?
A. Calcitonin
B. Vitamin D3
C. Parathyroid Hormone (PTH)
D. Thyroid Stimulating Hormone (TSH)
Answer: C
Conceptual Explanation: PTH increases serum calcium by stimulating osteoclast activity
in bones and increasing renal calcium reabsorption while decreasing phosphate
reabsorption.
, 4. Which type of hypersensitivity reaction is characterized by the formation of immune
complexes that deposit in vessel walls, leading to complement activation and inflammation?
A. Type I
B. Type II
C. Type III
D. Type IV
Answer: C
Conceptual Explanation: Type III hypersensitivity involves the deposition of antigen-
antibody complexes in tissues, which triggers inflammation via the complement system,
unlike Type II which is tissue-specific antibody binding.
5. In the pathogenesis of Atherosclerosis, what is the specific role of ‘Foam Cells’?
A. They are smooth muscle cells that have migrated to the intima and calcified
B. They are macrophages that have engulfed oxidized LDL cholesterol
C. They are endothelial cells that have become detached from the basement membrane
D. They are platelets that have aggregated to form a stable thrombus
Answer: B
Conceptual Explanation: Foam cells are formed when macrophages ingest oxidized low-
density lipoprotein (LDL) at the site of a fatty streak in an artery wall.
PATHOPHYSIOLOGY FINAL EXAM
QUESTIONS AND ANSWERS
1. A 55-year-old male presents with persistent cough, exertional dyspnea, and a history of
smoking. Spirometry reveals a decreased FEV1/FVC ratio that does not significantly improve
with bronchodilators. Which pathological change is most characteristic of his condition?
A. Hypertrophy of bronchial smooth muscle and eosinophilic infiltration
B. Destruction of alveolar walls and enlargement of air spaces distal to terminal
bronchioles
C. Reversible airway narrowing caused by immunoglobulin E mediated response
D. Formation of non-caseating granulomas in the pulmonary parenchyma
Answer: B
Conceptual Explanation: The description points to COPD, specifically emphysema, which
is characterized by the permanent enlargement of gas-exchange airways and destruction of
alveolar walls without obvious fibrosis.
,2. In the context of Heart Failure with Preserved Ejection Fraction (HFpEF), which
physiological mechanism is primarily responsible for the clinical symptoms?
A. Significant reduction in myocardial contractility and stroke volume
B. Impaired ventricular relaxation and increased stiffness during diastole
C. Excessive dilation of the left ventricle leading to mitral valve regurgitation
D. Obstruction of the left ventricular outflow tract due to septal hypertrophy
Answer: B
Conceptual Explanation: HFpEF is primarily a diastolic dysfunction issue where the heart
cannot relax properly to fill with blood, despite having a near-normal ejection fraction.
3. A patient exhibits high serum calcium levels and low serum phosphate levels. A bone scan
reveals increased osteoclast activity. Which hormone is most likely elevated?
A. Calcitonin
B. Vitamin D3
C. Parathyroid Hormone (PTH)
D. Thyroid Stimulating Hormone (TSH)
Answer: C
Conceptual Explanation: PTH increases serum calcium by stimulating osteoclast activity
in bones and increasing renal calcium reabsorption while decreasing phosphate
reabsorption.
, 4. Which type of hypersensitivity reaction is characterized by the formation of immune
complexes that deposit in vessel walls, leading to complement activation and inflammation?
A. Type I
B. Type II
C. Type III
D. Type IV
Answer: C
Conceptual Explanation: Type III hypersensitivity involves the deposition of antigen-
antibody complexes in tissues, which triggers inflammation via the complement system,
unlike Type II which is tissue-specific antibody binding.
5. In the pathogenesis of Atherosclerosis, what is the specific role of ‘Foam Cells’?
A. They are smooth muscle cells that have migrated to the intima and calcified
B. They are macrophages that have engulfed oxidized LDL cholesterol
C. They are endothelial cells that have become detached from the basement membrane
D. They are platelets that have aggregated to form a stable thrombus
Answer: B
Conceptual Explanation: Foam cells are formed when macrophages ingest oxidized low-
density lipoprotein (LDL) at the site of a fatty streak in an artery wall.
