NUR 6111 ADVANCED
PATHOPHYSIOLOGY EXAM 3
QUESTIONS AND ANSWERS WITH
VERIFIED SOLUTIONS 2026/2027
UPDATE. JUST RELEASED
1. Which physiological mechanism is primarily responsible for the ventricular remodeling
observed in chronic heart failure?
A. Decrease in systemic vascular resistance
B. Increased parasympathetic nervous system activity
C. Activation of the renin-angiotensin-aldosterone system (RAAS)
D. Downregulation of endothelin-1 receptors
Answer: C
Conceptual Explanation: Chronic activation of the RAAS and the sympathetic nervous
system leads to structural changes in the myocardium, including hypertrophy and fibrosis,
known as ventricular remodeling.
2. In the pathogenesis of atherosclerosis, which cell type is responsible for the formation of
‘foam cells’ after ingesting oxidized LDL?
A. Macrophages
,B. Endothelial cells
C. Neutrophils
D. Smooth muscle cells
Answer: A
Conceptual Explanation: Macrophages ingest oxidized LDL in the tunica intima, becoming
foam cells, which are the hallmark of early fatty streaks in atherosclerosis.
3. Which clinical finding is most characteristic of Left-sided Heart Failure rather than Right-
sided Heart Failure?
A. Jugular venous distention
B. Pulmonary crackles and orthopnea
C. Peripheral edema
D. Hepatomegaly
Answer: B
Conceptual Explanation: Left-sided failure leads to pulmonary congestion and increased
pulmonary capillary wedge pressure, resulting in dyspnea and crackles. The other options
reflect systemic venous congestion typical of right-sided failure.
4. What is the primary compensatory mechanism for metabolic acidosis?
A. Renal excretion of bicarbonate
B. Increased reabsorption of hydrogen ions in the distal tubule
, C. Respiratory hyperventilation to decrease PaCO2
D. Decrease in tidal volume
Answer: C
Conceptual Explanation: To compensate for metabolic acidosis (low pH), the respiratory
system increases the rate and depth of breathing (Kussmaul respirations) to blow off CO2
and raise pH.
5. In Heart Failure with Preserved Ejection Fraction (HFpEF), the primary pathophysiology
involves:
A. Impaired ventricular contractility
B. Excessive venous return
C. Dilation of the left ventricular cavity
D. Impaired ventricular relaxation and filling
Answer: D
Conceptual Explanation: HFpEF, also known as diastolic heart failure, is characterized by
a stiff ventricle that cannot fill properly despite a normal ejection fraction.
6. A patient with chronic obstructive pulmonary disease (COPD) develops pulmonary
hypertension. What is the most likely underlying cause?
A. Excessive production of nitric oxide
B. Increased left atrial pressure
PATHOPHYSIOLOGY EXAM 3
QUESTIONS AND ANSWERS WITH
VERIFIED SOLUTIONS 2026/2027
UPDATE. JUST RELEASED
1. Which physiological mechanism is primarily responsible for the ventricular remodeling
observed in chronic heart failure?
A. Decrease in systemic vascular resistance
B. Increased parasympathetic nervous system activity
C. Activation of the renin-angiotensin-aldosterone system (RAAS)
D. Downregulation of endothelin-1 receptors
Answer: C
Conceptual Explanation: Chronic activation of the RAAS and the sympathetic nervous
system leads to structural changes in the myocardium, including hypertrophy and fibrosis,
known as ventricular remodeling.
2. In the pathogenesis of atherosclerosis, which cell type is responsible for the formation of
‘foam cells’ after ingesting oxidized LDL?
A. Macrophages
,B. Endothelial cells
C. Neutrophils
D. Smooth muscle cells
Answer: A
Conceptual Explanation: Macrophages ingest oxidized LDL in the tunica intima, becoming
foam cells, which are the hallmark of early fatty streaks in atherosclerosis.
3. Which clinical finding is most characteristic of Left-sided Heart Failure rather than Right-
sided Heart Failure?
A. Jugular venous distention
B. Pulmonary crackles and orthopnea
C. Peripheral edema
D. Hepatomegaly
Answer: B
Conceptual Explanation: Left-sided failure leads to pulmonary congestion and increased
pulmonary capillary wedge pressure, resulting in dyspnea and crackles. The other options
reflect systemic venous congestion typical of right-sided failure.
4. What is the primary compensatory mechanism for metabolic acidosis?
A. Renal excretion of bicarbonate
B. Increased reabsorption of hydrogen ions in the distal tubule
, C. Respiratory hyperventilation to decrease PaCO2
D. Decrease in tidal volume
Answer: C
Conceptual Explanation: To compensate for metabolic acidosis (low pH), the respiratory
system increases the rate and depth of breathing (Kussmaul respirations) to blow off CO2
and raise pH.
5. In Heart Failure with Preserved Ejection Fraction (HFpEF), the primary pathophysiology
involves:
A. Impaired ventricular contractility
B. Excessive venous return
C. Dilation of the left ventricular cavity
D. Impaired ventricular relaxation and filling
Answer: D
Conceptual Explanation: HFpEF, also known as diastolic heart failure, is characterized by
a stiff ventricle that cannot fill properly despite a normal ejection fraction.
6. A patient with chronic obstructive pulmonary disease (COPD) develops pulmonary
hypertension. What is the most likely underlying cause?
A. Excessive production of nitric oxide
B. Increased left atrial pressure
