NR-507 ADVANCED PATHOPHYSIOLOGY EXAM 2 QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A | LATEST EXAM UPDATE 2026/2027 CHAMBERLAIN UNIVERSITY.
Core Domains:
Cellular Adaptation and Injury
Inflammation and Immunity
Genetics and Genetic Disorders
Fluid, Electrolyte, and Acid-Base Balance
Alterations in Hematologic Function
Alterations in Cardiovascular Function
Alterations in Respiratory Function
Alterations in Renal and Urinary Function
Introduction
This comprehensive examination is designed to assess the advanced practice nursing student's mastery of key
concepts in pathophysiology. The exam evaluates the ability to apply foundational knowledge of disease
mechanisms to clinical scenarios, integrating principles of cellular biology, immunology, genetics, and systemic
physiology. Through a series of multiple-choice questions and clinical case studies, students will demonstrate
critical thinking and clinical decision-making skills essential for safe and effective patient care. The questions
emphasize the underlying pathophysiological processes that lead to common and complex health alterations,
preparing the student for real-world diagnostic and therapeutic challenges.
,SECTION ONE: QUESTIONS 1–100
Question 1
A patient presents with fatigue, pallor, and shortness of breath. Laboratory results reveal a hemoglobin of 8.2
g/dL, mean corpuscular volume (MCV) of 68 fL, and low serum ferritin. Which pathophysiological mechanism
best explains these findings?
A. Impaired DNA synthesis leading to ineffective erythropoiesis
B. Chronic blood loss leading to depleted iron stores and microcytic anemia
C. Autoimmune destruction of erythrocytes in the peripheral circulation
D. Bone marrow failure resulting in pancytopenia
🟢B
🔴 RATIONALE: The patient's presentation (fatigue, pallor, dyspnea) along with low hemoglobin, microcytic (low
MCV) indices, and low ferritin are classic findings of iron deficiency anemia. The most common cause is chronic
blood loss, which depletes iron stores, leading to decreased hemoglobin synthesis and the production of small,
pale red blood cells.
Question 2
A 65-year-old patient with a history of hypertension is diagnosed with left-sided heart failure. Which of the
following findings is most directly related to this condition?
A. Jugular venous distention
B. Peripheral edema
,C. Pulmonary congestion and dyspnea
D. Hepatomegaly
🟢C
🔴 RATIONALE: Left-sided heart failure results in an inability of the left ventricle to effectively pump blood
forward, leading to a backup of pressure into the pulmonary circulation. This causes pulmonary congestion,
manifesting as dyspnea, cough, and crackles on auscultation. The other options are characteristic of right-sided
heart failure.
Question 3
A child is diagnosed with cystic fibrosis. This autosomal recessive disorder is caused by a mutation in the CFTR
gene, which encodes for a protein that functions as a:
A. Sodium channel
B. Potassium channel
C. Chloride channel
D. Calcium channel
🟢C
🔴 RATIONALE: The CFTR (cystic fibrosis transmembrane conductance regulator) gene encodes for a protein
that functions as a chloride channel. Defective chloride transport leads to the production of thick, viscous
secretions in the lungs, pancreas, and other organs, which is the hallmark of cystic fibrosis.
Question 4
, A patient with chronic obstructive pulmonary disease (COPD) is experiencing respiratory acidosis. Which
compensatory mechanism would the body initiate?
A. Increased ventilation to blow off CO2
B. Decreased ventilation to retain CO2
C. Renal excretion of bicarbonate
D. Renal retention of hydrogen ions
🟢A
🔴 RATIONALE: Respiratory acidosis is characterized by an increase in PaCO2. The primary compensatory
mechanism is a metabolic response by the kidneys, which retain bicarbonate and excrete hydrogen ions.
However, the immediate physiologic response is increased ventilation (if possible) to eliminate CO2. In the
context of COPD, the body's compensatory mechanism is renal retention of bicarbonate to buffer the acidosis.
Question 5
A patient is diagnosed with acute pyelonephritis. Which of the following is the most common causative
pathogen?
A. Streptococcus pneumoniae
B. Staphylococcus aureus
C. Escherichia coli
D. Pseudomonas aeruginosa
🟢C
ANSWERS) PLUS RATIONALES 2026 Q&A | LATEST EXAM UPDATE 2026/2027 CHAMBERLAIN UNIVERSITY.
Core Domains:
Cellular Adaptation and Injury
Inflammation and Immunity
Genetics and Genetic Disorders
Fluid, Electrolyte, and Acid-Base Balance
Alterations in Hematologic Function
Alterations in Cardiovascular Function
Alterations in Respiratory Function
Alterations in Renal and Urinary Function
Introduction
This comprehensive examination is designed to assess the advanced practice nursing student's mastery of key
concepts in pathophysiology. The exam evaluates the ability to apply foundational knowledge of disease
mechanisms to clinical scenarios, integrating principles of cellular biology, immunology, genetics, and systemic
physiology. Through a series of multiple-choice questions and clinical case studies, students will demonstrate
critical thinking and clinical decision-making skills essential for safe and effective patient care. The questions
emphasize the underlying pathophysiological processes that lead to common and complex health alterations,
preparing the student for real-world diagnostic and therapeutic challenges.
,SECTION ONE: QUESTIONS 1–100
Question 1
A patient presents with fatigue, pallor, and shortness of breath. Laboratory results reveal a hemoglobin of 8.2
g/dL, mean corpuscular volume (MCV) of 68 fL, and low serum ferritin. Which pathophysiological mechanism
best explains these findings?
A. Impaired DNA synthesis leading to ineffective erythropoiesis
B. Chronic blood loss leading to depleted iron stores and microcytic anemia
C. Autoimmune destruction of erythrocytes in the peripheral circulation
D. Bone marrow failure resulting in pancytopenia
🟢B
🔴 RATIONALE: The patient's presentation (fatigue, pallor, dyspnea) along with low hemoglobin, microcytic (low
MCV) indices, and low ferritin are classic findings of iron deficiency anemia. The most common cause is chronic
blood loss, which depletes iron stores, leading to decreased hemoglobin synthesis and the production of small,
pale red blood cells.
Question 2
A 65-year-old patient with a history of hypertension is diagnosed with left-sided heart failure. Which of the
following findings is most directly related to this condition?
A. Jugular venous distention
B. Peripheral edema
,C. Pulmonary congestion and dyspnea
D. Hepatomegaly
🟢C
🔴 RATIONALE: Left-sided heart failure results in an inability of the left ventricle to effectively pump blood
forward, leading to a backup of pressure into the pulmonary circulation. This causes pulmonary congestion,
manifesting as dyspnea, cough, and crackles on auscultation. The other options are characteristic of right-sided
heart failure.
Question 3
A child is diagnosed with cystic fibrosis. This autosomal recessive disorder is caused by a mutation in the CFTR
gene, which encodes for a protein that functions as a:
A. Sodium channel
B. Potassium channel
C. Chloride channel
D. Calcium channel
🟢C
🔴 RATIONALE: The CFTR (cystic fibrosis transmembrane conductance regulator) gene encodes for a protein
that functions as a chloride channel. Defective chloride transport leads to the production of thick, viscous
secretions in the lungs, pancreas, and other organs, which is the hallmark of cystic fibrosis.
Question 4
, A patient with chronic obstructive pulmonary disease (COPD) is experiencing respiratory acidosis. Which
compensatory mechanism would the body initiate?
A. Increased ventilation to blow off CO2
B. Decreased ventilation to retain CO2
C. Renal excretion of bicarbonate
D. Renal retention of hydrogen ions
🟢A
🔴 RATIONALE: Respiratory acidosis is characterized by an increase in PaCO2. The primary compensatory
mechanism is a metabolic response by the kidneys, which retain bicarbonate and excrete hydrogen ions.
However, the immediate physiologic response is increased ventilation (if possible) to eliminate CO2. In the
context of COPD, the body's compensatory mechanism is renal retention of bicarbonate to buffer the acidosis.
Question 5
A patient is diagnosed with acute pyelonephritis. Which of the following is the most common causative
pathogen?
A. Streptococcus pneumoniae
B. Staphylococcus aureus
C. Escherichia coli
D. Pseudomonas aeruginosa
🟢C
