NURS 5432 ADVANCED
PATHOPHYSIOLOGY FINAL EXAM
QUESTIONS AND ANSWERS
1. A 65-year-old patient with chronic heart failure presents with increased dyspnea and
orthopnea. What is the primary pathophysiological mechanism causing pulmonary edema in
this patient?
A. Increased capillary oncotic pressure
B. Increased capillary hydrostatic pressure
C. Decreased capillary hydrostatic pressure
D. Decreased capillary permeability
Answer: B
Conceptual Explanation: In left-sided heart failure, the heart cannot pump blood
efficiently, leading to a backup of pressure into the pulmonary vasculature. This increases
capillary hydrostatic pressure, forcing fluid into the interstitial and alveolar spaces.
2. Which mechanism best describes the development of insulin resistance in Type 2 Diabetes
Mellitus?
A. Autoimmune destruction of pancreatic beta cells
,B. Down-regulation of insulin receptors and post-receptor signaling defects
C. Increased production of glucagon-like peptide-1 (GLP-1)
D. Absolute deficiency of insulin production
Answer: B
Conceptual Explanation: Type 2 Diabetes is characterized by insulin resistance, where
cells fail to respond to insulin due to down-regulation of receptors and impaired
intracellular signaling, often associated with obesity and inflammation.
3. In the pathogenesis of emphysema, what is the role of alpha-1 antitrypsin?
A. It stimulates the production of mucus in the bronchioles
B. It promotes the constriction of smooth muscle in the airways
C. It inhibits elastase, an enzyme that breaks down lung tissue
D. It increases the surface tension within the alveoli
Answer: C
Conceptual Explanation: Alpha-1 antitrypsin is a protease inhibitor that protects the
lungs from elastase, an enzyme released by neutrophils. A deficiency leads to unchecked
destruction of alveolar walls.
4. Which of the following describes the pathophysiology of Myasthenia Gravis?
A. Destruction of the myelin sheath in the central nervous system
B. Degeneration of dopaminergic neurons in the substantia nigra
, C. Antibody-mediated destruction of acetylcholine receptors at the neuromuscular junction
D. Excessive release of glutamate causing neurotoxicity
Answer: C
Conceptual Explanation: Myasthenia Gravis is an autoimmune disorder where IgG
antibodies block or destroy acetylcholine receptors at the postsynaptic neuromuscular
junction, leading to muscle weakness.
5. What is the primary cause of metabolic acidosis in a patient with chronic kidney disease?
A. Failure of the kidneys to excrete fixed acids and regenerate bicarbonate
B. Excessive loss of bicarbonate through the skin
C. Increased excretion of hydrogen ions
D. Hyperventilation resulting in low CO2 levels
Answer: A
Conceptual Explanation: As kidney function declines, the ability to excrete metabolic
acids (like phosphoric and sulfuric acid) and reabsorb/regenerate bicarbonate is impaired,
resulting in metabolic acidosis.
6. During the compensatory phase of shock, which hormone is released to increase blood
volume and pressure?
A. Atrial Natriuretic Peptide (ANP)
B. Aldosterone
PATHOPHYSIOLOGY FINAL EXAM
QUESTIONS AND ANSWERS
1. A 65-year-old patient with chronic heart failure presents with increased dyspnea and
orthopnea. What is the primary pathophysiological mechanism causing pulmonary edema in
this patient?
A. Increased capillary oncotic pressure
B. Increased capillary hydrostatic pressure
C. Decreased capillary hydrostatic pressure
D. Decreased capillary permeability
Answer: B
Conceptual Explanation: In left-sided heart failure, the heart cannot pump blood
efficiently, leading to a backup of pressure into the pulmonary vasculature. This increases
capillary hydrostatic pressure, forcing fluid into the interstitial and alveolar spaces.
2. Which mechanism best describes the development of insulin resistance in Type 2 Diabetes
Mellitus?
A. Autoimmune destruction of pancreatic beta cells
,B. Down-regulation of insulin receptors and post-receptor signaling defects
C. Increased production of glucagon-like peptide-1 (GLP-1)
D. Absolute deficiency of insulin production
Answer: B
Conceptual Explanation: Type 2 Diabetes is characterized by insulin resistance, where
cells fail to respond to insulin due to down-regulation of receptors and impaired
intracellular signaling, often associated with obesity and inflammation.
3. In the pathogenesis of emphysema, what is the role of alpha-1 antitrypsin?
A. It stimulates the production of mucus in the bronchioles
B. It promotes the constriction of smooth muscle in the airways
C. It inhibits elastase, an enzyme that breaks down lung tissue
D. It increases the surface tension within the alveoli
Answer: C
Conceptual Explanation: Alpha-1 antitrypsin is a protease inhibitor that protects the
lungs from elastase, an enzyme released by neutrophils. A deficiency leads to unchecked
destruction of alveolar walls.
4. Which of the following describes the pathophysiology of Myasthenia Gravis?
A. Destruction of the myelin sheath in the central nervous system
B. Degeneration of dopaminergic neurons in the substantia nigra
, C. Antibody-mediated destruction of acetylcholine receptors at the neuromuscular junction
D. Excessive release of glutamate causing neurotoxicity
Answer: C
Conceptual Explanation: Myasthenia Gravis is an autoimmune disorder where IgG
antibodies block or destroy acetylcholine receptors at the postsynaptic neuromuscular
junction, leading to muscle weakness.
5. What is the primary cause of metabolic acidosis in a patient with chronic kidney disease?
A. Failure of the kidneys to excrete fixed acids and regenerate bicarbonate
B. Excessive loss of bicarbonate through the skin
C. Increased excretion of hydrogen ions
D. Hyperventilation resulting in low CO2 levels
Answer: A
Conceptual Explanation: As kidney function declines, the ability to excrete metabolic
acids (like phosphoric and sulfuric acid) and reabsorb/regenerate bicarbonate is impaired,
resulting in metabolic acidosis.
6. During the compensatory phase of shock, which hormone is released to increase blood
volume and pressure?
A. Atrial Natriuretic Peptide (ANP)
B. Aldosterone
