1
NU 578 Unit 3 Exam Advanced Nursing University of
South Alabama Actual Exam 2026/2027 – Complete
Exam-Style Questions with Detailed Rationales | Pass
Guaranteed – A+ Graded
[SECTION 1: Advanced Pathophysiology — Questions 1-20]
Q1: A 58-year-old male presents with crushing chest pain. Cardiac biomarkers reveal necrosis of
cardiac cells. Which cellular injury mechanism is primarily responsible for the irreversible
damage seen in myocardial infarction?
A. Cellular atrophy
C. Ischemia leading to ATP depletion [CORRECT]
D. Viral cytolysis
Correct Answer: C
Rationale: In myocardial infarction, ischemia (lack of blood flow) causes the cessation of
oxidative phosphorylation, leading to rapid depletion of ATP. Without ATP, the sodium-
potassium pump fails, leading to cellular swelling (hydropic degeneration) and eventual cell
lysis. Atrophy is a decrease in cell size, not injury. Viral cytolysis causes myocarditis, not typical
MI.
Q2: Which of the following best distinguishes apoptosis from necrosis?
A. Necrosis is programmed cell death; apoptosis is accidental.
C. Apoptosis does not trigger an inflammatory response; necrosis does. [CORRECT]
D. Apoptosis affects large groups of cells; necrosis affects individual cells.
Correct Answer: C
Rationale: Apoptosis is a highly regulated, programmed cell death process that occurs in single
cells without releasing cellular contents into the surrounding tissue, thus avoiding inflammation.
Necrosis is an unprogrammed, accidental cell death caused by severe injury that releases cellular
debris, triggering a robust inflammatory response.
,2
Q3: In the context of hemodynamic disorders, which of the following factors constitutes
Virchow's Triad for the development of thrombosis?
A. Hypertension, hyperlipidemia, and obesity
C. Endothelial injury, stasis of blood flow, and hypercoagulability [CORRECT]
D. Platelet count, fibrinogen levels, and viscosity
Correct Answer: C
Rationale: Virchow's Triad comprises the three broad categories of factors that contribute to
thrombosis: endothelial injury (exposing subendothelial collagen), stasis of blood flow
(preventing dilution of activated clotting factors), and hypercoagulability (increased tendency of
blood to clot). Hypertension and obesity are risk factors, but not the components of the triad
itself.
Q4: A patient in the intensive care unit exhibits cool, clammy skin, tachycardia, and a decreased
urine output, despite a normal CVP reading. The pathophysiology suggests:
A. Neurogenic shock
C. Distributive shock (specifically septic shock) [CORRECT]
D. Obstructive shock
Correct Answer: C
Rationale: The patient exhibits signs of decreased tissue perfusion (cool skin, low urine output)
and compensatory tachycardia. In the early "hyperdynamic" or "warm" phase of distributive
shock (like sepsis), cardiac output may be high, but vasodilation leads to maldistribution of flow.
As shock progresses, cardiac output may drop. The normal CVP argues against hypovolemic
shock initially, and cool skin suggests late shock or compensated shock.
Q5: Which type of shock is characterized by severe systemic vasodilation and increased capillary
permeability due to a massive allergic reaction?
A. Hypovolemic shock
C. Anaphylactic shock [CORRECT]
, 3
D. Cardiogenic shock
Correct Answer: C
Rationale: Anaphylactic shock is a Type I hypersensitivity reaction mediated by IgE. Massive
release of histamine and other mediators causes profound vasodilation (decreased SVR) and
increased capillary permeability (fluid shift out of vessels), leading to hypotension and shock.
Hypovolemic is fluid loss, Cardiogenic is pump failure.
Q6: In the development of atherosclerosis, which cell type is the primary player in the uptake of
oxidized LDL to form "foam cells"?
A. Endothelial cells
C. Macrophages [CORRECT]
D. Smooth muscle cells
Correct Answer: C
Rationale: Macrophages in the arterial intima scavenge oxidized LDL. When they accumulate
large amounts of lipid, they transform into foam cells, which are the primary cellular component
of the fatty streak, the earliest visible lesion of atherosclerosis. While smooth muscle cells
contribute later to the fibrous cap, they are not the initial foam cells.
Q7: A patient with heart failure has a left ventricular ejection fraction (LVEF) of 35%. Which
classification of heart failure is this?
A. Heart Failure with Preserved EF (HFpEF)
C. Heart Failure with Reduced EF (HFrEF) [CORRECT]
D. Right-sided Heart Failure
Correct Answer: C
Rationale: HFrEF is defined by an LVEF of 40% or lower. This patient's EF of 35% indicates
systolic dysfunction where the heart cannot pump effectively. HFpEF involves diastolic
dysfunction with an EF of 50% or greater. Right-sided failure refers to the affected ventricle, not
the EF value.
NU 578 Unit 3 Exam Advanced Nursing University of
South Alabama Actual Exam 2026/2027 – Complete
Exam-Style Questions with Detailed Rationales | Pass
Guaranteed – A+ Graded
[SECTION 1: Advanced Pathophysiology — Questions 1-20]
Q1: A 58-year-old male presents with crushing chest pain. Cardiac biomarkers reveal necrosis of
cardiac cells. Which cellular injury mechanism is primarily responsible for the irreversible
damage seen in myocardial infarction?
A. Cellular atrophy
C. Ischemia leading to ATP depletion [CORRECT]
D. Viral cytolysis
Correct Answer: C
Rationale: In myocardial infarction, ischemia (lack of blood flow) causes the cessation of
oxidative phosphorylation, leading to rapid depletion of ATP. Without ATP, the sodium-
potassium pump fails, leading to cellular swelling (hydropic degeneration) and eventual cell
lysis. Atrophy is a decrease in cell size, not injury. Viral cytolysis causes myocarditis, not typical
MI.
Q2: Which of the following best distinguishes apoptosis from necrosis?
A. Necrosis is programmed cell death; apoptosis is accidental.
C. Apoptosis does not trigger an inflammatory response; necrosis does. [CORRECT]
D. Apoptosis affects large groups of cells; necrosis affects individual cells.
Correct Answer: C
Rationale: Apoptosis is a highly regulated, programmed cell death process that occurs in single
cells without releasing cellular contents into the surrounding tissue, thus avoiding inflammation.
Necrosis is an unprogrammed, accidental cell death caused by severe injury that releases cellular
debris, triggering a robust inflammatory response.
,2
Q3: In the context of hemodynamic disorders, which of the following factors constitutes
Virchow's Triad for the development of thrombosis?
A. Hypertension, hyperlipidemia, and obesity
C. Endothelial injury, stasis of blood flow, and hypercoagulability [CORRECT]
D. Platelet count, fibrinogen levels, and viscosity
Correct Answer: C
Rationale: Virchow's Triad comprises the three broad categories of factors that contribute to
thrombosis: endothelial injury (exposing subendothelial collagen), stasis of blood flow
(preventing dilution of activated clotting factors), and hypercoagulability (increased tendency of
blood to clot). Hypertension and obesity are risk factors, but not the components of the triad
itself.
Q4: A patient in the intensive care unit exhibits cool, clammy skin, tachycardia, and a decreased
urine output, despite a normal CVP reading. The pathophysiology suggests:
A. Neurogenic shock
C. Distributive shock (specifically septic shock) [CORRECT]
D. Obstructive shock
Correct Answer: C
Rationale: The patient exhibits signs of decreased tissue perfusion (cool skin, low urine output)
and compensatory tachycardia. In the early "hyperdynamic" or "warm" phase of distributive
shock (like sepsis), cardiac output may be high, but vasodilation leads to maldistribution of flow.
As shock progresses, cardiac output may drop. The normal CVP argues against hypovolemic
shock initially, and cool skin suggests late shock or compensated shock.
Q5: Which type of shock is characterized by severe systemic vasodilation and increased capillary
permeability due to a massive allergic reaction?
A. Hypovolemic shock
C. Anaphylactic shock [CORRECT]
, 3
D. Cardiogenic shock
Correct Answer: C
Rationale: Anaphylactic shock is a Type I hypersensitivity reaction mediated by IgE. Massive
release of histamine and other mediators causes profound vasodilation (decreased SVR) and
increased capillary permeability (fluid shift out of vessels), leading to hypotension and shock.
Hypovolemic is fluid loss, Cardiogenic is pump failure.
Q6: In the development of atherosclerosis, which cell type is the primary player in the uptake of
oxidized LDL to form "foam cells"?
A. Endothelial cells
C. Macrophages [CORRECT]
D. Smooth muscle cells
Correct Answer: C
Rationale: Macrophages in the arterial intima scavenge oxidized LDL. When they accumulate
large amounts of lipid, they transform into foam cells, which are the primary cellular component
of the fatty streak, the earliest visible lesion of atherosclerosis. While smooth muscle cells
contribute later to the fibrous cap, they are not the initial foam cells.
Q7: A patient with heart failure has a left ventricular ejection fraction (LVEF) of 35%. Which
classification of heart failure is this?
A. Heart Failure with Preserved EF (HFpEF)
C. Heart Failure with Reduced EF (HFrEF) [CORRECT]
D. Right-sided Heart Failure
Correct Answer: C
Rationale: HFrEF is defined by an LVEF of 40% or lower. This patient's EF of 35% indicates
systolic dysfunction where the heart cannot pump effectively. HFpEF involves diastolic
dysfunction with an EF of 50% or greater. Right-sided failure refers to the affected ventricle, not
the EF value.
