NURS 6501 ADVANCED
PATHOPHYSIOLOGY FINAL EXAM
PREP QUESTIONS AND ANSWERS
1. Which mechanism is primarily responsible for the development of sodium and water
retention in heart failure?
A. Decreased production of antidiuretic hormone (ADH)
B. Increased production of atrial natriuretic peptide (ANP)
C. Activation of the renin-angiotensin-aldosterone system (RAAS)
D. Inhibition of the sympathetic nervous system
Answer: C
Conceptual Explanation: Heart failure triggers a decrease in cardiac output, which leads
to reduced renal perfusion. This activates the RAAS, resulting in aldosterone-mediated
sodium and water retention to increase blood volume.
2. In the context of cellular injury, what is the most significant consequence of ATP depletion?
A. Excessive protein synthesis
B. Failure of the sodium-potassium pump leading to cellular swelling
,C. Decrease in intracellular calcium levels
D. Increased intracellular pH
Answer: B
Conceptual Explanation: ATP is required for the Na+/K+ pump. When ATP is depleted,
sodium stays inside the cell, pulling water in by osmosis, which causes cellular swelling
(hydropic degeneration).
3. A patient presents with a high fever, stiff neck, and a positive Brudzinski sign. Which
pathophysiological finding is most likely in the cerebrospinal fluid (CSF)?
A. Low glucose and high protein
B. High glucose and low protein
C. Clear appearance with normal cell count
D. Absence of neutrophils
Answer: A
Conceptual Explanation: In bacterial meningitis, bacteria consume glucose for energy,
resulting in low CSF glucose levels. Increased vascular permeability and inflammatory
debris lead to elevated protein levels.
4. Which type of hypersensitivity reaction is mediated by IgE and involves the degranulation
of mast cells?
A. Type I
, B. Type II
C. Type III
D. Type IV
Answer: A
Conceptual Explanation: Type I hypersensitivity is an immediate allergic reaction where
IgE binds to mast cells, triggering the release of histamine and other inflammatory
mediators.
5. A 55-year-old male with chronic kidney disease (CKD) develops secondary
hyperparathyroidism. What is the underlying cause?
A. Hypercalcemia due to excessive Vitamin D
B. Increased renal excretion of calcium
C. Direct stimulation of the parathyroid gland by urea
D. Hypocalcemia resulting from phosphorus retention and decreased Vitamin D activation
Answer: D
Conceptual Explanation: In CKD, the kidneys fail to excrete phosphate and cannot activate
Vitamin D. High phosphate binds calcium, and low Vitamin D reduces calcium absorption,
both leading to hypocalcemia, which stimulates the parathyroid gland.
6. Which characteristic is a hallmark of malignant tumors compared to benign tumors?
A. Presence of a fibrous capsule
PATHOPHYSIOLOGY FINAL EXAM
PREP QUESTIONS AND ANSWERS
1. Which mechanism is primarily responsible for the development of sodium and water
retention in heart failure?
A. Decreased production of antidiuretic hormone (ADH)
B. Increased production of atrial natriuretic peptide (ANP)
C. Activation of the renin-angiotensin-aldosterone system (RAAS)
D. Inhibition of the sympathetic nervous system
Answer: C
Conceptual Explanation: Heart failure triggers a decrease in cardiac output, which leads
to reduced renal perfusion. This activates the RAAS, resulting in aldosterone-mediated
sodium and water retention to increase blood volume.
2. In the context of cellular injury, what is the most significant consequence of ATP depletion?
A. Excessive protein synthesis
B. Failure of the sodium-potassium pump leading to cellular swelling
,C. Decrease in intracellular calcium levels
D. Increased intracellular pH
Answer: B
Conceptual Explanation: ATP is required for the Na+/K+ pump. When ATP is depleted,
sodium stays inside the cell, pulling water in by osmosis, which causes cellular swelling
(hydropic degeneration).
3. A patient presents with a high fever, stiff neck, and a positive Brudzinski sign. Which
pathophysiological finding is most likely in the cerebrospinal fluid (CSF)?
A. Low glucose and high protein
B. High glucose and low protein
C. Clear appearance with normal cell count
D. Absence of neutrophils
Answer: A
Conceptual Explanation: In bacterial meningitis, bacteria consume glucose for energy,
resulting in low CSF glucose levels. Increased vascular permeability and inflammatory
debris lead to elevated protein levels.
4. Which type of hypersensitivity reaction is mediated by IgE and involves the degranulation
of mast cells?
A. Type I
, B. Type II
C. Type III
D. Type IV
Answer: A
Conceptual Explanation: Type I hypersensitivity is an immediate allergic reaction where
IgE binds to mast cells, triggering the release of histamine and other inflammatory
mediators.
5. A 55-year-old male with chronic kidney disease (CKD) develops secondary
hyperparathyroidism. What is the underlying cause?
A. Hypercalcemia due to excessive Vitamin D
B. Increased renal excretion of calcium
C. Direct stimulation of the parathyroid gland by urea
D. Hypocalcemia resulting from phosphorus retention and decreased Vitamin D activation
Answer: D
Conceptual Explanation: In CKD, the kidneys fail to excrete phosphate and cannot activate
Vitamin D. High phosphate binds calcium, and low Vitamin D reduces calcium absorption,
both leading to hypocalcemia, which stimulates the parathyroid gland.
6. Which characteristic is a hallmark of malignant tumors compared to benign tumors?
A. Presence of a fibrous capsule
