NURSING PATHOPHYSIOLOGY QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A
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Core Domains
Cellular Pathophysiology and Injury
Immune Response and Inflammation
Cardiovascular Pathophysiology
Respiratory Pathophysiology
Renal and Urinary Tract Pathophysiology
Gastrointestinal Pathophysiology
Neurological Pathophysiology
Endocrine Pathophysiology
Infectious Disease and Hypersensitivity
Metabolic and Nutritional Disorders
Introduction
This comprehensive assessment evaluates critical knowledge and clinical decision-making skills essential for advanced nursing practice in
pathophysiology. The exam consists of 100 multiple-choice and scenario-based questions designed to test understanding of disease mechanisms,
cellular processes, immune responses, and system-specific pathologies. Questions emphasize real-world application, requiring students to analyze
clinical scenarios, interpret diagnostic data, and make informed nursing decisions. The assessment covers foundational theory alongside applied
professional knowledge, regulatory compliance, ethics, and professional standards. Success on this exam demonstrates readiness to apply
pathophysiological concepts in clinical practice, supporting patient-centered care and evidence-based intervention strategies.
Section One: Questions 1–100
Question 1
Which cellular change is most characteristic of reversible cell injury?
,A. Nuclear pyknosis
B. Cellular swelling
C. Membrane rupture
D. Karyorrhexis
🟢 Correct answer: B. Cellular swelling
🔴 RATIONALE: Cellular swelling (hydropic change) is the most common and earliest sign of reversible cell injury, resulting from failure of ATP-
dependent ion pumps. Nuclear pyknosis, membrane rupture, and karyorrhexis are features of irreversible injury and necrosis.
Question 2
A patient presents with fever, elevated CRP, and neutrophilia. Which immune response component is primarily responsible for these findings?
A. Basophils
B. Macrophages releasing cytokines
C. Erythrocytes
D. Platelets
🟢 Correct answer: B. Macrophages releasing cytokines
🔴 RATIONALE: Macrophages are key innate immune cells that release pro-inflammatory cytokines (IL-1, IL-6, TNF-α) triggering fever, CRP
production, and neutrophil mobilization. Basophils, erythrocytes, and platelets do not primarily drive these systemic inflammatory responses.
Question 3
Which finding is most specific for left-sided heart failure?
A. Peripheral edema
B. Pulmonary crackles
C. Hepatomegaly
D. Jugular venous distension
,🟢 Correct answer: B. Pulmonary crackles
🔴 RATIONALE: Left-sided heart failure causes pulmonary congestion leading to crackles on auscultation. Peripheral edema, hepatomegaly, and
JVD are signs of right-sided heart failure due to systemic venous congestion.
Question 4
In allergic (Type I) hypersensitivity, which antibody mediates the response?
A. IgA
B. IgG
C. IgM
D. IgE
🟢 Correct answer: D. IgE
🔴 RATIONALE: IgE binds to mast cells and basophils, triggering degranulation and release of histamine upon allergen exposure. IgA, IgG, and IgM
are not involved in Type I hypersensitivity reactions.
Question 5
A patient with type 2 diabetes has elevated HbA1c despite medication. Which pathophysiological mechanism is most likely contributing?
A. Autoimmune beta-cell destruction
B. Insulin resistance in peripheral tissues
C. Complete insulin deficiency
D. Excessive glucagon secretion only
🟢 Correct answer: B. Insulin resistance in peripheral tissues
🔴 RATIONALE: Type 2 diabetes is characterized primarily by insulin resistance in muscle, liver, and adipose tissue, combined with relative insulin
deficiency. Autoimmune beta-cell destruction (A) and complete insulin deficiency (C) characterize type 1 diabetes.
, Question 6
Which acid-base disturbance is expected in a patient with severe salicylate poisoning?
A. Metabolic alkalosis only
B. Mixed respiratory alkalosis and metabolic acidosis
C. Respiratory acidosis only
D. Metabolic acidosis only
🟢 Correct answer: B. Mixed respiratory alkalosis and metabolic acidosis
🔴 RATIONALE: Salicylates directly stimulate the respiratory center causing respiratory alkalosis while also causing uncoupling of oxidative
phosphorylation leading to metabolic acidosis. This mixed pattern is characteristic of salicylate toxicity.
Question 7
What is the primary pathophysiological mechanism of acute kidney injury in sepsis?
A. Glomerular autoimmunity
B. Renal vasoconstriction and ischemia
C. Obstructive uropathy
D. Tubular crystal deposition
🟢 Correct answer: B. Renal vasoconstriction and ischemia
🔴 RATIONALE: Sepsis-induced AKI results from systemic inflammation causing renal vasoconstriction, microvascular dysfunction, and ischemic
injury to tubules. Autoimmunity, obstruction, and crystal deposition are not primary mechanisms in septic AKI.
Question 8
Which vitamin deficiency causes megaloblastic anemia with neurological symptoms?
| INSTANT DOWNLOAD PDF
Core Domains
Cellular Pathophysiology and Injury
Immune Response and Inflammation
Cardiovascular Pathophysiology
Respiratory Pathophysiology
Renal and Urinary Tract Pathophysiology
Gastrointestinal Pathophysiology
Neurological Pathophysiology
Endocrine Pathophysiology
Infectious Disease and Hypersensitivity
Metabolic and Nutritional Disorders
Introduction
This comprehensive assessment evaluates critical knowledge and clinical decision-making skills essential for advanced nursing practice in
pathophysiology. The exam consists of 100 multiple-choice and scenario-based questions designed to test understanding of disease mechanisms,
cellular processes, immune responses, and system-specific pathologies. Questions emphasize real-world application, requiring students to analyze
clinical scenarios, interpret diagnostic data, and make informed nursing decisions. The assessment covers foundational theory alongside applied
professional knowledge, regulatory compliance, ethics, and professional standards. Success on this exam demonstrates readiness to apply
pathophysiological concepts in clinical practice, supporting patient-centered care and evidence-based intervention strategies.
Section One: Questions 1–100
Question 1
Which cellular change is most characteristic of reversible cell injury?
,A. Nuclear pyknosis
B. Cellular swelling
C. Membrane rupture
D. Karyorrhexis
🟢 Correct answer: B. Cellular swelling
🔴 RATIONALE: Cellular swelling (hydropic change) is the most common and earliest sign of reversible cell injury, resulting from failure of ATP-
dependent ion pumps. Nuclear pyknosis, membrane rupture, and karyorrhexis are features of irreversible injury and necrosis.
Question 2
A patient presents with fever, elevated CRP, and neutrophilia. Which immune response component is primarily responsible for these findings?
A. Basophils
B. Macrophages releasing cytokines
C. Erythrocytes
D. Platelets
🟢 Correct answer: B. Macrophages releasing cytokines
🔴 RATIONALE: Macrophages are key innate immune cells that release pro-inflammatory cytokines (IL-1, IL-6, TNF-α) triggering fever, CRP
production, and neutrophil mobilization. Basophils, erythrocytes, and platelets do not primarily drive these systemic inflammatory responses.
Question 3
Which finding is most specific for left-sided heart failure?
A. Peripheral edema
B. Pulmonary crackles
C. Hepatomegaly
D. Jugular venous distension
,🟢 Correct answer: B. Pulmonary crackles
🔴 RATIONALE: Left-sided heart failure causes pulmonary congestion leading to crackles on auscultation. Peripheral edema, hepatomegaly, and
JVD are signs of right-sided heart failure due to systemic venous congestion.
Question 4
In allergic (Type I) hypersensitivity, which antibody mediates the response?
A. IgA
B. IgG
C. IgM
D. IgE
🟢 Correct answer: D. IgE
🔴 RATIONALE: IgE binds to mast cells and basophils, triggering degranulation and release of histamine upon allergen exposure. IgA, IgG, and IgM
are not involved in Type I hypersensitivity reactions.
Question 5
A patient with type 2 diabetes has elevated HbA1c despite medication. Which pathophysiological mechanism is most likely contributing?
A. Autoimmune beta-cell destruction
B. Insulin resistance in peripheral tissues
C. Complete insulin deficiency
D. Excessive glucagon secretion only
🟢 Correct answer: B. Insulin resistance in peripheral tissues
🔴 RATIONALE: Type 2 diabetes is characterized primarily by insulin resistance in muscle, liver, and adipose tissue, combined with relative insulin
deficiency. Autoimmune beta-cell destruction (A) and complete insulin deficiency (C) characterize type 1 diabetes.
, Question 6
Which acid-base disturbance is expected in a patient with severe salicylate poisoning?
A. Metabolic alkalosis only
B. Mixed respiratory alkalosis and metabolic acidosis
C. Respiratory acidosis only
D. Metabolic acidosis only
🟢 Correct answer: B. Mixed respiratory alkalosis and metabolic acidosis
🔴 RATIONALE: Salicylates directly stimulate the respiratory center causing respiratory alkalosis while also causing uncoupling of oxidative
phosphorylation leading to metabolic acidosis. This mixed pattern is characteristic of salicylate toxicity.
Question 7
What is the primary pathophysiological mechanism of acute kidney injury in sepsis?
A. Glomerular autoimmunity
B. Renal vasoconstriction and ischemia
C. Obstructive uropathy
D. Tubular crystal deposition
🟢 Correct answer: B. Renal vasoconstriction and ischemia
🔴 RATIONALE: Sepsis-induced AKI results from systemic inflammation causing renal vasoconstriction, microvascular dysfunction, and ischemic
injury to tubules. Autoimmunity, obstruction, and crystal deposition are not primary mechanisms in septic AKI.
Question 8
Which vitamin deficiency causes megaloblastic anemia with neurological symptoms?
