NR 507 EXAM 3 - ADVANCED
PATHOPHYSIOLOGY QUESTIONS
WITH VERIFIED ANSWERS 2026/2027.
CHAMBERLAIN
1. Which of the following describes the primary pathophysiology behind the development of
atherosclerotic plaques?
A. Hypertrophy of smooth muscle cells in the tunica media
B. Accumulation of LDL and subsequent macrophage migration into the subendothelial
space
C. Release of calcium from bone into the arterial wall
D. Primary bacterial infection of the endothelial lining
Answer: B
Conceptual Explanation: Atherosclerosis begins with endothelial injury, leading to the
accumulation of LDL in the subendothelial space, which is then oxidized and engulfed by
macrophages to form foam cells.
2. In Heart Failure with Preserved Ejection Fraction (HFpEF), the primary abnormality is:
A. Inability of the left ventricle to contract effectively
B. Excessive preload resulting in thin ventricular walls
,C. Obstruction of the aortic valve limiting cardiac output
D. Impaired ventricular relaxation and filling due to stiffening
Answer: D
Conceptual Explanation: HFpEF, also known as diastolic heart failure, is characterized by
a stiff left ventricle that cannot relax or fill properly, even though the ejection fraction
remains above 50%.
3. Which biomarker is considered the most specific indicator of myocardial infarction in the
clinical setting?
A. Creatine Kinase-MB (CK-MB)
B. Cardiac Troponin I (cTnI)
C. Myoglobin
D. Lactate Dehydrogenase (LDH)
Answer: B
Conceptual Explanation: Cardiac Troponins (I and T) are highly specific to cardiac muscle
tissue and are the gold standard for diagnosing acute myocardial infarction.
4. A patient with chronic obstructive pulmonary disease (COPD) develops pulmonary
hypertension. What is the most likely mechanism?
A. Left ventricular failure causing back pressure
B. Excessive production of erythropoietin leading to viscosity
, C. Hypoxic pulmonary vasoconstriction and vascular remodeling
D. Systemic hypertension affecting pulmonary circulation
Answer: C
Conceptual Explanation: In COPD, chronic hypoxia leads to pulmonary vasoconstriction
and permanent remodeling of pulmonary vessels, which increases pulmonary vascular
resistance and results in pulmonary hypertension.
5. Which condition is characterized by the presence of Reed-Sternberg cells in lymph node
tissue?
A. Hodgkin Lymphoma
B. Non-Hodgkin Lymphoma
C. Multiple Myeloma
D. Chronic Lymphocytic Leukemia
Answer: A
Conceptual Explanation: Reed-Sternberg cells are large, multinucleated malignant B cells
that are the hallmark diagnostic feature of Hodgkin Lymphoma.
6. In Acute Respiratory Distress Syndrome (ARDS), the fundamental cause of hypoxemia is:
A. Increased compliance of the lung tissue
B. Bronchoconstriction caused by histamine release
C. Decreased production of carbon dioxide
PATHOPHYSIOLOGY QUESTIONS
WITH VERIFIED ANSWERS 2026/2027.
CHAMBERLAIN
1. Which of the following describes the primary pathophysiology behind the development of
atherosclerotic plaques?
A. Hypertrophy of smooth muscle cells in the tunica media
B. Accumulation of LDL and subsequent macrophage migration into the subendothelial
space
C. Release of calcium from bone into the arterial wall
D. Primary bacterial infection of the endothelial lining
Answer: B
Conceptual Explanation: Atherosclerosis begins with endothelial injury, leading to the
accumulation of LDL in the subendothelial space, which is then oxidized and engulfed by
macrophages to form foam cells.
2. In Heart Failure with Preserved Ejection Fraction (HFpEF), the primary abnormality is:
A. Inability of the left ventricle to contract effectively
B. Excessive preload resulting in thin ventricular walls
,C. Obstruction of the aortic valve limiting cardiac output
D. Impaired ventricular relaxation and filling due to stiffening
Answer: D
Conceptual Explanation: HFpEF, also known as diastolic heart failure, is characterized by
a stiff left ventricle that cannot relax or fill properly, even though the ejection fraction
remains above 50%.
3. Which biomarker is considered the most specific indicator of myocardial infarction in the
clinical setting?
A. Creatine Kinase-MB (CK-MB)
B. Cardiac Troponin I (cTnI)
C. Myoglobin
D. Lactate Dehydrogenase (LDH)
Answer: B
Conceptual Explanation: Cardiac Troponins (I and T) are highly specific to cardiac muscle
tissue and are the gold standard for diagnosing acute myocardial infarction.
4. A patient with chronic obstructive pulmonary disease (COPD) develops pulmonary
hypertension. What is the most likely mechanism?
A. Left ventricular failure causing back pressure
B. Excessive production of erythropoietin leading to viscosity
, C. Hypoxic pulmonary vasoconstriction and vascular remodeling
D. Systemic hypertension affecting pulmonary circulation
Answer: C
Conceptual Explanation: In COPD, chronic hypoxia leads to pulmonary vasoconstriction
and permanent remodeling of pulmonary vessels, which increases pulmonary vascular
resistance and results in pulmonary hypertension.
5. Which condition is characterized by the presence of Reed-Sternberg cells in lymph node
tissue?
A. Hodgkin Lymphoma
B. Non-Hodgkin Lymphoma
C. Multiple Myeloma
D. Chronic Lymphocytic Leukemia
Answer: A
Conceptual Explanation: Reed-Sternberg cells are large, multinucleated malignant B cells
that are the hallmark diagnostic feature of Hodgkin Lymphoma.
6. In Acute Respiratory Distress Syndrome (ARDS), the fundamental cause of hypoxemia is:
A. Increased compliance of the lung tissue
B. Bronchoconstriction caused by histamine release
C. Decreased production of carbon dioxide
