NR 507 ADVANCED
PATHOPHYSIOLOGY WEEK 4
COMPREHENSIVE EXAM | 50
QUESTIONS | PROCTORED EXAM |
CHAMBERLAIN UNIVERSITY
1. Which of the following describes the primary pathological mechanism of emphysema?
A. Chronic inflammation of the bronchial tubes with excessive mucus production.
B. Destruction of alveolar walls and loss of elastic recoil leading to air trapping.
C. Hyper-responsiveness of the airways to environmental allergens.
D. Infection of the lower respiratory tract resulting in consolidation.
Answer: B
Conceptual Explanation: Emphysema is characterized by the permanent enlargement of
gas-exchange airways accompanied by the destruction of alveolar walls and loss of elastic
recoil, which leads to airflow limitation and air trapping.
2. What is the hallmark physiological finding in a patient with a pulmonary embolism?
A. Low V/Q ratio (Shunt)
B. Normal V/Q ratio
C. High V/Q ratio (Dead Space)
,D. Silent Unit
Answer: C
Conceptual Explanation: A pulmonary embolism obstructs blood flow to a segment of the
lung while ventilation continues, creating an area of high V/Q, also known as alveolar dead
space.
3. A patient presents with dyspnea, orthopnea, and crackles in the lungs. Which condition is
most consistent with these findings?
A. Right-sided heart failure
B. Peripheral artery disease
C. Left-sided heart failure
D. Pulmonary hypertension
Answer: C
Conceptual Explanation: Left-sided heart failure leads to increased pulmonary venous
pressure and fluid extravasation into the alveoli (pulmonary edema), causing dyspnea and
crackles.
4. Which hormone is released by the heart in response to atrial stretch to promote sodium
and water excretion?
A. Aldosterone
B. Antidiuretic hormone
, C. Atrial natriuretic peptide (ANP)
D. Renin
Answer: C
Conceptual Explanation: ANP is secreted by the atria in response to increased stretch; it
acts to lower blood pressure by promoting sodium and water loss in the kidneys.
5. In the pathophysiology of atherosclerosis, what occurs immediately after endothelial
injury?
A. Formation of a fibrous plaque
B. Oxidation of LDL and macrophage migration
C. Rupture of the lipid core
D. Calcification of the vessel wall
Answer: B
Conceptual Explanation: Following endothelial injury, LDL enters the tunica intima and
becomes oxidized, attracting macrophages which ingest the LDL to become foam cells, the
earliest step in plaque formation.
6. Which of the following is a characteristic feature of Prinzmetal angina?
A. Vasospasm of the coronary arteries occurring at rest, often at night.
B. Pain triggered by physical exertion and relieved by rest.
C. Necrosis of the myocardium due to total occlusion.
PATHOPHYSIOLOGY WEEK 4
COMPREHENSIVE EXAM | 50
QUESTIONS | PROCTORED EXAM |
CHAMBERLAIN UNIVERSITY
1. Which of the following describes the primary pathological mechanism of emphysema?
A. Chronic inflammation of the bronchial tubes with excessive mucus production.
B. Destruction of alveolar walls and loss of elastic recoil leading to air trapping.
C. Hyper-responsiveness of the airways to environmental allergens.
D. Infection of the lower respiratory tract resulting in consolidation.
Answer: B
Conceptual Explanation: Emphysema is characterized by the permanent enlargement of
gas-exchange airways accompanied by the destruction of alveolar walls and loss of elastic
recoil, which leads to airflow limitation and air trapping.
2. What is the hallmark physiological finding in a patient with a pulmonary embolism?
A. Low V/Q ratio (Shunt)
B. Normal V/Q ratio
C. High V/Q ratio (Dead Space)
,D. Silent Unit
Answer: C
Conceptual Explanation: A pulmonary embolism obstructs blood flow to a segment of the
lung while ventilation continues, creating an area of high V/Q, also known as alveolar dead
space.
3. A patient presents with dyspnea, orthopnea, and crackles in the lungs. Which condition is
most consistent with these findings?
A. Right-sided heart failure
B. Peripheral artery disease
C. Left-sided heart failure
D. Pulmonary hypertension
Answer: C
Conceptual Explanation: Left-sided heart failure leads to increased pulmonary venous
pressure and fluid extravasation into the alveoli (pulmonary edema), causing dyspnea and
crackles.
4. Which hormone is released by the heart in response to atrial stretch to promote sodium
and water excretion?
A. Aldosterone
B. Antidiuretic hormone
, C. Atrial natriuretic peptide (ANP)
D. Renin
Answer: C
Conceptual Explanation: ANP is secreted by the atria in response to increased stretch; it
acts to lower blood pressure by promoting sodium and water loss in the kidneys.
5. In the pathophysiology of atherosclerosis, what occurs immediately after endothelial
injury?
A. Formation of a fibrous plaque
B. Oxidation of LDL and macrophage migration
C. Rupture of the lipid core
D. Calcification of the vessel wall
Answer: B
Conceptual Explanation: Following endothelial injury, LDL enters the tunica intima and
becomes oxidized, attracting macrophages which ingest the LDL to become foam cells, the
earliest step in plaque formation.
6. Which of the following is a characteristic feature of Prinzmetal angina?
A. Vasospasm of the coronary arteries occurring at rest, often at night.
B. Pain triggered by physical exertion and relieved by rest.
C. Necrosis of the myocardium due to total occlusion.
