NR 507 ADVANCED PATHOPHYSIOLOGY MIDTERM |
CHAMBERLAIN UNIVERSITY | ACADEMIC YEAR
2026/2027 | MIDTERM
CORE DOMAINS
• Cellular Adaptation, Injury, and Death
• Genetics, Genomics, and Mitochondrial Disorders
• Inflammation, Tissue Repair, and Wound Healing
• Immunity, Hypersensitivity, and Immunodeficiency
• Fluid, Electrolyte, and Acid-Base Imbalances
• Cardiovascular Pathophysiology
• Respiratory Pathophysiology
• Renal and Endocrine Pathophysiology
INTRODUCTION
This comprehensive midterm examination evaluates the advanced knowledge,
clinical reasoning, and decision-making skills essential for safe, competent
advanced practice nursing. The assessment covers cellular adaptation and injury,
genetic and mitochondrial disorders, inflammation and immunity, fluid-electrolyte
and acid-base imbalances, and multisystem pathophysiology. Questions are
designed at the analysis and synthesis levels, requiring the candidate to recognize
subtle clinical cues, analyze multidimensional data, prioritize competing
pathophysiologic mechanisms, and generate evidence-based solutions using the
NGN Clinical Judgment Measurement Model. The examination emphasizes high-
risk disease processes, molecular mechanisms of injury, and the delivery of safe,
quality, patient-centered care.
,1. A 58-year-old man with long-standing hypertension is found to have left
ventricular hypertrophy on echocardiography. The cardiologist explains that his
cardiac myocytes have enlarged in response to chronic pressure overload.
Which cellular adaptation best describes this process?
A. Hyperplasia of cardiac myocytes secondary to increased workload
B. Hypertrophy of cardiac myocytes due to increased protein synthesis
C. Metaplasia of cardiac tissue into fibrotic connective tissue
D. Atrophy of neighboring myocytes compensating for pressure changes
B. Hypertrophy of cardiac myocytes due to increased protein synthesis
RATIONALE: Hypertrophy is an increase in cell size without an increase in cell
number and is the primary response of terminally differentiated cardiac myocytes
to chronic pressure overload. Hyperplasia is not possible in mature cardiac muscle
cells; metaplasia and atrophy do not explain the observed enlargement. This
adaptation allows the heart to maintain cardiac output against increased
afterload, but eventually leads to impaired diastolic function and heart failure.
2. A pathologist examines a liver biopsy from a patient who has consumed large
amounts of alcohol for 20 years. Many hepatocytes contain large clear vacuoles
that displace the nucleus to the periphery. What is the most likely composition
of these vacuoles?
A. Glycogen accumulation secondary to impaired glucose metabolism
B. Triglyceride accumulation from altered lipid handling
C. Protein aggregates from misfolded intermediate filaments
D. Hemosiderin deposits from chronic hemolysis
B. Triglyceride accumulation from altered lipid handling
RATIONALE: Alcoholic fatty liver is characterized by steatosis, the
accumulation of triglycerides within hepatocytes. Glycogen appears different
histologically, protein aggregates form Mallory bodies, and hemosiderin is iron
,storage pigment. Chronic alcohol consumption alters lipid metabolism, leading to
increased fatty acid synthesis and decreased fatty acid oxidation, resulting in
triglyceride accumulation.
3. A 34-year-old woman develops progressive muscle weakness and is
diagnosed with a mitochondrial disorder. Laboratory studies show elevated
lactate. Which statement correctly describes the inheritance pattern of most
mitochondrial DNA mutations?
A. They follow classic Mendelian autosomal dominant inheritance
B. They are transmitted exclusively through the maternal lineage
C. They are inherited equally from both parents via nuclear genes
D. They exhibit X-linked recessive transmission with incomplete penetrance
B. They are transmitted exclusively through the maternal lineage
RATIONALE: Mitochondrial DNA is inherited almost exclusively from the
mother because the oocyte contributes the cytoplasm and mitochondria to the
zygote. Paternal mitochondria are typically eliminated after fertilization. This
maternal inheritance pattern explains why mitochondrial disorders often affect
multiple generations through the maternal line. Elevated lactate reflects impaired
oxidative phosphorylation and anaerobic metabolism.
4. During ischemia of myocardial tissue, reversible injury is characterized by
cellular swelling. Which of the following mechanisms primarily drives this
swelling?
A. Increased sodium-potassium ATPase activity pumping sodium inward
B. Failure of the Na⁺/K⁺ ATPase leading to sodium and water influx
C. Enhanced calcium extrusion through plasma membrane pumps
D. Activation of apoptotic caspases causing membrane blebbing
B. Failure of the Na⁺/K⁺ ATPase leading to sodium and water influx
, RATIONALE: Ischemia depletes ATP, impairing the Na⁺/K⁺ ATPase. Sodium
accumulates intracellularly, osmotically drawing water into the cell and causing
cellular swelling. This is the hallmark of reversible cell injury. Enhanced calcium
extrusion and caspase activation are not the primary drivers of ischemic swelling;
in fact, calcium overload occurs during reperfusion injury.
5. A 52-year-old male presents with chronic liver disease and laboratory findings
showing elevated liver enzymes and bilirubin. Cellular injury in this patient is
most likely mediated by which mechanism?
A. Free radical injury leading to lipid peroxidation of cell membranes
B. Apoptosis triggered by growth factor withdrawal only
C. Hypertrophic adaptation without cellular damage
D. Reversible cellular swelling without enzymatic leakage
A. Free radical injury leading to lipid peroxidation of cell membranes
RATIONALE: Free radical injury causes lipid peroxidation, disrupting
membrane integrity and leading to enzyme leakage (elevated liver enzymes) and
impaired bilirubin conjugation/excretion. Hypertrophy is an adaptive response,
not an injury mechanism, and reversible swelling does not explain elevated
enzymes. Chronic liver disease involves oxidative stress from reactive oxygen
species generated during inflammation and metabolism of toxins.
6. A 45-year-old woman with a history of smoking develops chronic hypoxia. Her
erythrocyte count is elevated on laboratory testing. This cellular adaptation is
best described as which type?
A. Physiologic hyperplasia in response to tissue demand
B. Pathologic hypertrophy due to nicotine exposure
C. Compensatory hyperplasia of erythroid precursors
D. Metaplasia of respiratory epithelium to squamous type
C. Compensatory hyperplasia of erythroid precursors
CHAMBERLAIN UNIVERSITY | ACADEMIC YEAR
2026/2027 | MIDTERM
CORE DOMAINS
• Cellular Adaptation, Injury, and Death
• Genetics, Genomics, and Mitochondrial Disorders
• Inflammation, Tissue Repair, and Wound Healing
• Immunity, Hypersensitivity, and Immunodeficiency
• Fluid, Electrolyte, and Acid-Base Imbalances
• Cardiovascular Pathophysiology
• Respiratory Pathophysiology
• Renal and Endocrine Pathophysiology
INTRODUCTION
This comprehensive midterm examination evaluates the advanced knowledge,
clinical reasoning, and decision-making skills essential for safe, competent
advanced practice nursing. The assessment covers cellular adaptation and injury,
genetic and mitochondrial disorders, inflammation and immunity, fluid-electrolyte
and acid-base imbalances, and multisystem pathophysiology. Questions are
designed at the analysis and synthesis levels, requiring the candidate to recognize
subtle clinical cues, analyze multidimensional data, prioritize competing
pathophysiologic mechanisms, and generate evidence-based solutions using the
NGN Clinical Judgment Measurement Model. The examination emphasizes high-
risk disease processes, molecular mechanisms of injury, and the delivery of safe,
quality, patient-centered care.
,1. A 58-year-old man with long-standing hypertension is found to have left
ventricular hypertrophy on echocardiography. The cardiologist explains that his
cardiac myocytes have enlarged in response to chronic pressure overload.
Which cellular adaptation best describes this process?
A. Hyperplasia of cardiac myocytes secondary to increased workload
B. Hypertrophy of cardiac myocytes due to increased protein synthesis
C. Metaplasia of cardiac tissue into fibrotic connective tissue
D. Atrophy of neighboring myocytes compensating for pressure changes
B. Hypertrophy of cardiac myocytes due to increased protein synthesis
RATIONALE: Hypertrophy is an increase in cell size without an increase in cell
number and is the primary response of terminally differentiated cardiac myocytes
to chronic pressure overload. Hyperplasia is not possible in mature cardiac muscle
cells; metaplasia and atrophy do not explain the observed enlargement. This
adaptation allows the heart to maintain cardiac output against increased
afterload, but eventually leads to impaired diastolic function and heart failure.
2. A pathologist examines a liver biopsy from a patient who has consumed large
amounts of alcohol for 20 years. Many hepatocytes contain large clear vacuoles
that displace the nucleus to the periphery. What is the most likely composition
of these vacuoles?
A. Glycogen accumulation secondary to impaired glucose metabolism
B. Triglyceride accumulation from altered lipid handling
C. Protein aggregates from misfolded intermediate filaments
D. Hemosiderin deposits from chronic hemolysis
B. Triglyceride accumulation from altered lipid handling
RATIONALE: Alcoholic fatty liver is characterized by steatosis, the
accumulation of triglycerides within hepatocytes. Glycogen appears different
histologically, protein aggregates form Mallory bodies, and hemosiderin is iron
,storage pigment. Chronic alcohol consumption alters lipid metabolism, leading to
increased fatty acid synthesis and decreased fatty acid oxidation, resulting in
triglyceride accumulation.
3. A 34-year-old woman develops progressive muscle weakness and is
diagnosed with a mitochondrial disorder. Laboratory studies show elevated
lactate. Which statement correctly describes the inheritance pattern of most
mitochondrial DNA mutations?
A. They follow classic Mendelian autosomal dominant inheritance
B. They are transmitted exclusively through the maternal lineage
C. They are inherited equally from both parents via nuclear genes
D. They exhibit X-linked recessive transmission with incomplete penetrance
B. They are transmitted exclusively through the maternal lineage
RATIONALE: Mitochondrial DNA is inherited almost exclusively from the
mother because the oocyte contributes the cytoplasm and mitochondria to the
zygote. Paternal mitochondria are typically eliminated after fertilization. This
maternal inheritance pattern explains why mitochondrial disorders often affect
multiple generations through the maternal line. Elevated lactate reflects impaired
oxidative phosphorylation and anaerobic metabolism.
4. During ischemia of myocardial tissue, reversible injury is characterized by
cellular swelling. Which of the following mechanisms primarily drives this
swelling?
A. Increased sodium-potassium ATPase activity pumping sodium inward
B. Failure of the Na⁺/K⁺ ATPase leading to sodium and water influx
C. Enhanced calcium extrusion through plasma membrane pumps
D. Activation of apoptotic caspases causing membrane blebbing
B. Failure of the Na⁺/K⁺ ATPase leading to sodium and water influx
, RATIONALE: Ischemia depletes ATP, impairing the Na⁺/K⁺ ATPase. Sodium
accumulates intracellularly, osmotically drawing water into the cell and causing
cellular swelling. This is the hallmark of reversible cell injury. Enhanced calcium
extrusion and caspase activation are not the primary drivers of ischemic swelling;
in fact, calcium overload occurs during reperfusion injury.
5. A 52-year-old male presents with chronic liver disease and laboratory findings
showing elevated liver enzymes and bilirubin. Cellular injury in this patient is
most likely mediated by which mechanism?
A. Free radical injury leading to lipid peroxidation of cell membranes
B. Apoptosis triggered by growth factor withdrawal only
C. Hypertrophic adaptation without cellular damage
D. Reversible cellular swelling without enzymatic leakage
A. Free radical injury leading to lipid peroxidation of cell membranes
RATIONALE: Free radical injury causes lipid peroxidation, disrupting
membrane integrity and leading to enzyme leakage (elevated liver enzymes) and
impaired bilirubin conjugation/excretion. Hypertrophy is an adaptive response,
not an injury mechanism, and reversible swelling does not explain elevated
enzymes. Chronic liver disease involves oxidative stress from reactive oxygen
species generated during inflammation and metabolism of toxins.
6. A 45-year-old woman with a history of smoking develops chronic hypoxia. Her
erythrocyte count is elevated on laboratory testing. This cellular adaptation is
best described as which type?
A. Physiologic hyperplasia in response to tissue demand
B. Pathologic hypertrophy due to nicotine exposure
C. Compensatory hyperplasia of erythroid precursors
D. Metaplasia of respiratory epithelium to squamous type
C. Compensatory hyperplasia of erythroid precursors
