NR 547 CEA Exam 2026 | Chamberlain University
Comprehensive Exam Assessment Study Guide with
Practice Questions & Rationales
Advanced Pathophysiology Practice Questions
Question 1
Chronic activation of neurohormonal pathways plays a significant role in the
progression of heart failure. Which physiological change iHs associated with
prolonged renin-angiotensin-aldosterone system (RAAS) activation?
A. Increased myocardial efficiency through reduced ventricular workload
B. Decreased fluid retention caused by suppression of aldosterone
C. Myocardial fibrosis and ventricular remodeling caused by chronic hormonal
stimulation
D. Permanent improvement in cardiac contractility through sympathetic activation
Correct Answer✅: C
Rationale:
Long-term RAAS activation increases angiotensin II and aldosterone release,
resulting in vasoconstriction, sodium and water retention, inflammation, oxidative
stress, and myocardial fibrosis. These changes contribute to ventricular
,remodeling, which initially compensates for cardiac stress but eventually worsens
cardiac function and promotes heart failure progression.
Question 2
A review of cellular injury mechanisms focuses on the ability of cells to recover
after exposure to a harmful stimulus. Which finding is most consistent with
reversible cellular injury?
A. Rupture of the plasma membrane with leakage of intracellular enzymes
B. Severe mitochondrial damage resulting in loss of cellular function
C. Cellular swelling caused by impaired sodium-potassium pump activity
D. Nuclear fragmentation caused by enzymatic degradation
Correct Answer✅: C
Rationale:
Reversible cellular injury occurs when the damaging stimulus is removed before
permanent damage develops. A common early change is cellular swelling caused
by decreased ATP production and failure of the sodium-potassium pump, resulting
in sodium and water accumulation inside the cell.
Question 3
A discussion regarding chronic inflammation focuses on how prolonged immune
activation contributes to disease development. Which mechanism best explains the
effect of chronic inflammation on tissues?
,A. Persistent inflammatory signaling causing cellular injury and fibrosis
B. Complete suppression of immune responses preventing tissue damage
C. Rapid resolution of inflammation with immediate tissue restoration
D. Increased regeneration of damaged tissue through continuous immune
stimulation
Correct Answer✅: A
Rationale:
Chronic inflammation occurs when inflammatory responses continue for prolonged
periods. Persistent activation of macrophages, lymphocytes, and inflammatory
mediators causes ongoing tissue injury, oxidative stress, abnormal repair processes,
and fibrosis. This mechanism contributes to conditions such as autoimmune
disorders, chronic infections, and cardiovascular disease.
Question 4
Arterial blood gas results are obtained during evaluation of a patient experiencing
respiratory distress:
• pH: 7.28
• PaCO₂: 55 mmHg
• HCO₃⁻: 25 mEq/L
Which interpretation is most accurate?
A. Acute respiratory acidosis
B. Metabolic alkalosis with compensation
, C. Metabolic acidosis with respiratory compensation
D. Respiratory alkalosis
Correct Answer✅: A
Rationale:
The decreased pH indicates acidemia. The elevated PaCO₂ identifies a respiratory
cause because carbon dioxide retention increases acidity. The normal bicarbonate
level indicates that renal compensation has not significantly occurred, suggesting
an acute respiratory acidosis.
Question 5
The inflammatory response protects the body against infection; however,
uncontrolled activation may result in systemic injury. Which mechanism
contributes to organ dysfunction during severe systemic inflammation?
A. Increased local immune activity restricted to the original infection site
B. Excessive inflammatory mediator release causing endothelial injury and
impaired tissue perfusion
C. Complete inhibition of immune cell activation
D. Increased oxygen delivery caused by improved vascular function
Correct Answer✅: B
Rationale:
Severe systemic inflammation, such as sepsis, causes excessive release of
cytokines and inflammatory mediators. This results in endothelial dysfunction,
increased vascular permeability, abnormal blood flow distribution, impaired tissue
oxygen delivery, and potential organ failure.
Comprehensive Exam Assessment Study Guide with
Practice Questions & Rationales
Advanced Pathophysiology Practice Questions
Question 1
Chronic activation of neurohormonal pathways plays a significant role in the
progression of heart failure. Which physiological change iHs associated with
prolonged renin-angiotensin-aldosterone system (RAAS) activation?
A. Increased myocardial efficiency through reduced ventricular workload
B. Decreased fluid retention caused by suppression of aldosterone
C. Myocardial fibrosis and ventricular remodeling caused by chronic hormonal
stimulation
D. Permanent improvement in cardiac contractility through sympathetic activation
Correct Answer✅: C
Rationale:
Long-term RAAS activation increases angiotensin II and aldosterone release,
resulting in vasoconstriction, sodium and water retention, inflammation, oxidative
stress, and myocardial fibrosis. These changes contribute to ventricular
,remodeling, which initially compensates for cardiac stress but eventually worsens
cardiac function and promotes heart failure progression.
Question 2
A review of cellular injury mechanisms focuses on the ability of cells to recover
after exposure to a harmful stimulus. Which finding is most consistent with
reversible cellular injury?
A. Rupture of the plasma membrane with leakage of intracellular enzymes
B. Severe mitochondrial damage resulting in loss of cellular function
C. Cellular swelling caused by impaired sodium-potassium pump activity
D. Nuclear fragmentation caused by enzymatic degradation
Correct Answer✅: C
Rationale:
Reversible cellular injury occurs when the damaging stimulus is removed before
permanent damage develops. A common early change is cellular swelling caused
by decreased ATP production and failure of the sodium-potassium pump, resulting
in sodium and water accumulation inside the cell.
Question 3
A discussion regarding chronic inflammation focuses on how prolonged immune
activation contributes to disease development. Which mechanism best explains the
effect of chronic inflammation on tissues?
,A. Persistent inflammatory signaling causing cellular injury and fibrosis
B. Complete suppression of immune responses preventing tissue damage
C. Rapid resolution of inflammation with immediate tissue restoration
D. Increased regeneration of damaged tissue through continuous immune
stimulation
Correct Answer✅: A
Rationale:
Chronic inflammation occurs when inflammatory responses continue for prolonged
periods. Persistent activation of macrophages, lymphocytes, and inflammatory
mediators causes ongoing tissue injury, oxidative stress, abnormal repair processes,
and fibrosis. This mechanism contributes to conditions such as autoimmune
disorders, chronic infections, and cardiovascular disease.
Question 4
Arterial blood gas results are obtained during evaluation of a patient experiencing
respiratory distress:
• pH: 7.28
• PaCO₂: 55 mmHg
• HCO₃⁻: 25 mEq/L
Which interpretation is most accurate?
A. Acute respiratory acidosis
B. Metabolic alkalosis with compensation
, C. Metabolic acidosis with respiratory compensation
D. Respiratory alkalosis
Correct Answer✅: A
Rationale:
The decreased pH indicates acidemia. The elevated PaCO₂ identifies a respiratory
cause because carbon dioxide retention increases acidity. The normal bicarbonate
level indicates that renal compensation has not significantly occurred, suggesting
an acute respiratory acidosis.
Question 5
The inflammatory response protects the body against infection; however,
uncontrolled activation may result in systemic injury. Which mechanism
contributes to organ dysfunction during severe systemic inflammation?
A. Increased local immune activity restricted to the original infection site
B. Excessive inflammatory mediator release causing endothelial injury and
impaired tissue perfusion
C. Complete inhibition of immune cell activation
D. Increased oxygen delivery caused by improved vascular function
Correct Answer✅: B
Rationale:
Severe systemic inflammation, such as sepsis, causes excessive release of
cytokines and inflammatory mediators. This results in endothelial dysfunction,
increased vascular permeability, abnormal blood flow distribution, impaired tissue
oxygen delivery, and potential organ failure.
