APEA PATHOPHYSIOLOGY ACTUAL EXAM REVIEW 60 QUESTIONS AND
CORRECT ANSWERS WITH RATIONALES 2026 LATEST EDITION
OVERVIEW
The APEA Pathophysiology exam evaluates understanding of disease mechanisms across
major body systems and the ability to apply that knowledge to clinical scenarios. The exam
emphasizes cardiovascular, respiratory, endocrine, renal, neurologic, gastrointestinal,
hematologic, and women’s health pathophysiology, with strong focus on how and why
diseases develop, not just symptoms. Questions require linking clinical presentations, labs, and
risk factors to underlying physiologic disruptions. Overall, the exam tests critical thinking,
pattern recognition, and foundational disease processes essential for safe and effective
advanced practice nursing.
1. The most common cause of croup is:
A. Bordetella pertussis
B. Parainfluenza virus
C. Coronavirus
D. Haemophilus influenzae
Answer: B – Parainfluenza virus
Rationale: Parainfluenza virus is the most common cause of viral croup, leading to subglottic
inflammation and airway narrowing.
2. Results from spirometry testing of a 60-year-old man indicate an FEV1/FVC <70%, FEV1 30–80%
predicted. Expected symptoms include:
A. Shortness of breath and pursed-lip breathing at rest
B. Productive cough and dyspnea on exertion
C. Decreased pulses and peripheral edema
D. Bradycardia with tachypnea
Answer: B – Productive cough and dyspnea on exertion
Rationale: These findings are consistent with moderate COPD, which presents with cough, sputum
production, and exertional dyspnea.
3. Annual influenza vaccination is necessary due to:
A. Active immunity
B. Passive immunity
C. Adaptive immunity
D. Antigenic variation
, Answer: D – Antigenic variation
Rationale: Influenza viruses undergo frequent antigenic changes, requiring annual vaccine updates.
4. Which of the following is a clinical manifestation of pulmonary edema?
A. Foul-smelling, blood-tinged sputum
B. Red or green sputum containing pus
C. A cough producing pink, frothy sputum
D. A frequent dry, nonproductive cough
Answer: C – A cough producing pink, frothy sputum
Rationale: Pulmonary edema causes fluid leakage into alveoli, producing pink, frothy sputum.
5. Acute respiratory consequences of pulmonary embolism include:
A. Endothelial injury
B. Turbulence of blood flow
C. Hypercoagulability
D. Pulmonary infarction
Answer: D – Pulmonary infarction
Rationale: Pulmonary infarction is an acute consequence of PE; the other options are components of
Virchow’s triad.
6. A common assessment finding in patients with cystic fibrosis is steatorrhea due to:
A. Hyperalgesia
B. Pancreatic insufficiency
C. Short gut syndrome
D. Increased intestinal mobility
Answer: B – Pancreatic insufficiency
Rationale: CF causes pancreatic enzyme deficiency, leading to fat malabsorption and oily stools.
7. An acute hemodynamic consequence of pulmonary embolism that may cause significant mortality
is:
A. Pulmonary hypertension
B. Right ventricular failure
C. Pleural effusion
D. Pulmonary infarction
CORRECT ANSWERS WITH RATIONALES 2026 LATEST EDITION
OVERVIEW
The APEA Pathophysiology exam evaluates understanding of disease mechanisms across
major body systems and the ability to apply that knowledge to clinical scenarios. The exam
emphasizes cardiovascular, respiratory, endocrine, renal, neurologic, gastrointestinal,
hematologic, and women’s health pathophysiology, with strong focus on how and why
diseases develop, not just symptoms. Questions require linking clinical presentations, labs, and
risk factors to underlying physiologic disruptions. Overall, the exam tests critical thinking,
pattern recognition, and foundational disease processes essential for safe and effective
advanced practice nursing.
1. The most common cause of croup is:
A. Bordetella pertussis
B. Parainfluenza virus
C. Coronavirus
D. Haemophilus influenzae
Answer: B – Parainfluenza virus
Rationale: Parainfluenza virus is the most common cause of viral croup, leading to subglottic
inflammation and airway narrowing.
2. Results from spirometry testing of a 60-year-old man indicate an FEV1/FVC <70%, FEV1 30–80%
predicted. Expected symptoms include:
A. Shortness of breath and pursed-lip breathing at rest
B. Productive cough and dyspnea on exertion
C. Decreased pulses and peripheral edema
D. Bradycardia with tachypnea
Answer: B – Productive cough and dyspnea on exertion
Rationale: These findings are consistent with moderate COPD, which presents with cough, sputum
production, and exertional dyspnea.
3. Annual influenza vaccination is necessary due to:
A. Active immunity
B. Passive immunity
C. Adaptive immunity
D. Antigenic variation
, Answer: D – Antigenic variation
Rationale: Influenza viruses undergo frequent antigenic changes, requiring annual vaccine updates.
4. Which of the following is a clinical manifestation of pulmonary edema?
A. Foul-smelling, blood-tinged sputum
B. Red or green sputum containing pus
C. A cough producing pink, frothy sputum
D. A frequent dry, nonproductive cough
Answer: C – A cough producing pink, frothy sputum
Rationale: Pulmonary edema causes fluid leakage into alveoli, producing pink, frothy sputum.
5. Acute respiratory consequences of pulmonary embolism include:
A. Endothelial injury
B. Turbulence of blood flow
C. Hypercoagulability
D. Pulmonary infarction
Answer: D – Pulmonary infarction
Rationale: Pulmonary infarction is an acute consequence of PE; the other options are components of
Virchow’s triad.
6. A common assessment finding in patients with cystic fibrosis is steatorrhea due to:
A. Hyperalgesia
B. Pancreatic insufficiency
C. Short gut syndrome
D. Increased intestinal mobility
Answer: B – Pancreatic insufficiency
Rationale: CF causes pancreatic enzyme deficiency, leading to fat malabsorption and oily stools.
7. An acute hemodynamic consequence of pulmonary embolism that may cause significant mortality
is:
A. Pulmonary hypertension
B. Right ventricular failure
C. Pleural effusion
D. Pulmonary infarction
