ADVANCED PATHOPHYSIOLOGY
COMPREHENSIVE FINAL EXAM (NURS
6501) QUESTIONS AND ANSWERS
1. A patient presents with widespread clotting followed by significant hemorrhage. The
clinician suspects Disseminated Intravascular Coagulation (DIC). What is the primary
underlying mechanism?
A. Excessive production of Vitamin K in the liver
B. Inhibition of the fibrinolytic system by plasminogen activator
C. Congenital deficiency of factor VIII and IX
D. Systemic activation of the coagulation cascade by tissue factor release
Answer: D
Conceptual Explanation: DIC is characterized by systemic activation of coagulation, often
triggered by tissue factor release during sepsis or trauma, which leads to microvascular
thrombosis and eventual depletion of clotting factors and platelets, causing hemorrhage.
,2. In the development of atherosclerosis, which cell type is responsible for ingesting oxidized
LDL to become foam cells?
A. Neutrophils
B. Macrophages
C. T-lymphocytes
D. Endothelial cells
Answer: B
Conceptual Explanation: Macrophages ingest oxidized low-density lipoproteins (LDL) in
the arterial wall, transforming into foam cells, which are the hallmark of early
atherosclerotic fatty streaks.
3. A patient with chronic kidney disease (CKD) has a significantly low hemoglobin level. What
is the most likely cause of this anemia?
A. Reduced production of erythropoietin by the kidneys
B. Deficiency in dietary iron absorption
C. Chronic blood loss during dialysis
D. Shortened lifespan of red blood cells due to uremia
Answer: A
, Conceptual Explanation: The kidneys produce erythropoietin in response to hypoxia; in
CKD, the loss of functional renal mass leads to a deficiency in erythropoietin, resulting in
decreased red blood cell production.
4. Which electrolyte imbalance is most commonly associated with the development of SIADH
(Syndrome of Inappropriate Antidiuretic Hormone)?
A. Hyperkalemia
B. Hypocalcemia
C. Hyponatremia
D. Hypernatremia
Answer: C
Conceptual Explanation: SIADH causes excessive water reabsorption by the kidneys,
leading to dilutional hyponatremia and concentrated urine.
5. During an acute asthma attack, the primary cause of airway obstruction is:
A. Destruction of alveolar walls and loss of elastic recoil
B. Mucosal edema, bronchoconstriction, and hypersecretion of mucus
C. Collapse of the small airways during inspiration
D. Calcification of the bronchial cartilage
Answer: B
COMPREHENSIVE FINAL EXAM (NURS
6501) QUESTIONS AND ANSWERS
1. A patient presents with widespread clotting followed by significant hemorrhage. The
clinician suspects Disseminated Intravascular Coagulation (DIC). What is the primary
underlying mechanism?
A. Excessive production of Vitamin K in the liver
B. Inhibition of the fibrinolytic system by plasminogen activator
C. Congenital deficiency of factor VIII and IX
D. Systemic activation of the coagulation cascade by tissue factor release
Answer: D
Conceptual Explanation: DIC is characterized by systemic activation of coagulation, often
triggered by tissue factor release during sepsis or trauma, which leads to microvascular
thrombosis and eventual depletion of clotting factors and platelets, causing hemorrhage.
,2. In the development of atherosclerosis, which cell type is responsible for ingesting oxidized
LDL to become foam cells?
A. Neutrophils
B. Macrophages
C. T-lymphocytes
D. Endothelial cells
Answer: B
Conceptual Explanation: Macrophages ingest oxidized low-density lipoproteins (LDL) in
the arterial wall, transforming into foam cells, which are the hallmark of early
atherosclerotic fatty streaks.
3. A patient with chronic kidney disease (CKD) has a significantly low hemoglobin level. What
is the most likely cause of this anemia?
A. Reduced production of erythropoietin by the kidneys
B. Deficiency in dietary iron absorption
C. Chronic blood loss during dialysis
D. Shortened lifespan of red blood cells due to uremia
Answer: A
, Conceptual Explanation: The kidneys produce erythropoietin in response to hypoxia; in
CKD, the loss of functional renal mass leads to a deficiency in erythropoietin, resulting in
decreased red blood cell production.
4. Which electrolyte imbalance is most commonly associated with the development of SIADH
(Syndrome of Inappropriate Antidiuretic Hormone)?
A. Hyperkalemia
B. Hypocalcemia
C. Hyponatremia
D. Hypernatremia
Answer: C
Conceptual Explanation: SIADH causes excessive water reabsorption by the kidneys,
leading to dilutional hyponatremia and concentrated urine.
5. During an acute asthma attack, the primary cause of airway obstruction is:
A. Destruction of alveolar walls and loss of elastic recoil
B. Mucosal edema, bronchoconstriction, and hypersecretion of mucus
C. Collapse of the small airways during inspiration
D. Calcification of the bronchial cartilage
Answer: B
