NR507 FINAL EXAM NR 507 WEEK 8 EXAM
ADVANCED PATHOPHYSIOLOGY EXPECTED QUESTIONS
AND ANSWERS () (VERIFIED ANSWERS)-
CHAMBERLAIN
CORE DOMAINS
Cellular Adaptation, Injury, and Death
Genetics and Genetic Disorders
Inflammation and Immunity
Hematologic Pathophysiology
Cardiovascular Pathophysiology
Pulmonary Pathophysiology
Renal and Urologic Pathophysiology
Endocrine and Metabolic Pathophysiology
Neurologic Pathophysiology
Gastrointestinal and Hepatobiliary Pathophysiology
INTRODUCTION
This comprehensive examination assesses the advanced pathophysiology
knowledge and clinical reasoning skills required of the graduate nursing
student. It evaluates foundational mechanisms of cellular adaptation, injury,
inflammation, immunity, and system-based pathophysiology across the
lifespan. The examination employs multiple-choice and case-based
questions to simulate realistic clinical encounters. Emphasis is placed on
critical thinking, integration of pathophysiologic mechanisms with clinical
presentation, and the application of evidence-based diagnostic reasoning.
This assessment prepares candidates for the rigor of advanced practice
nursing certification and real-world clinical practice.
SECTION ONE: QUESTIONS 1–100
1. A 58-year-old male construction worker with a 30-year history of
smoking two packs per day presents with chronic fatigue and
shortness of breath. Arterial blood gas reveals a carboxyhemoglobin
level of 12%. Cardiac myocytes show mitochondrial swelling and
,cristae disruption on electron microscopy. The cellular injury pattern
observed is best classified as which type?
A. Ischemic injury due to reduced arterial blood flow
B. Hypoxic injury due to decreased oxygen-carrying capacity of hemoglobin
C. Chemical injury due to direct toxin-mediated destruction of cell
membranes
D. Apoptotic injury due to programmed cell death triggered by carbon
monoxide
B. Hypoxic injury due to decreased oxygen-carrying capacity of
hemoglobin
RATIONALE: Carbon monoxide binds hemoglobin with 200 times the
affinity of oxygen, drastically reducing oxygen-carrying capacity and
causing hypoxic injury to tissues, including mitochondrial swelling and
cristae disruption. Ischemic injury refers specifically to reduced blood flow
rather than impaired oxygen transport.
2. A 42-year-old female with a long history of poorly controlled
hypertension is admitted with severe headache and visual
disturbances. Echocardiography reveals significant left ventricular
wall thickening, and myocardial biopsy shows enlarged cardiac
myocytes with increased amounts of cytoplasmic structural proteins.
This myocardial change is best described as which cellular
adaptation?
A. Hyperplasia resulting from increased number of cardiac myocytes under
stress
B. Hypertrophy resulting from increased cell size due to chronic pressure
overload
C. Metaplasia resulting from replacement of one mature cell type by
another
D. Dysplasia resulting from disorganized cellular proliferation in the
myocardium
B. Hypertrophy resulting from increased cell size due to chronic
pressure overload
, RATIONALE: Cardiac myocytes are terminally differentiated cells that
cannot undergo hyperplasia, so they respond to chronic pressure overload
by increasing in size through the addition of structural proteins, which
defines hypertrophy.
3. A 4-year-old boy is brought to the pediatric emergency department
with a 2-day history of high fever, severe sore throat, and swollen
cervical lymph nodes. A complete blood count shows marked
leukocytosis with atypical lymphocytes. Which pathophysiologic
mechanism best explains the lymph node enlargement?
A. Direct bacterial invasion of lymphoid tissue
B. Hyperplasia of lymphoid tissue in response to viral infection
C. Malignant transformation of lymphocytes
D. Granulomatous inflammation from mycobacterial infection
B. Hyperplasia of lymphoid tissue in response to viral infection
RATIONALE: Lymphoid hyperplasia is a common reactive response to
viral infections such as Epstein-Barr virus, leading to lymph node
enlargement. The atypical lymphocytes seen on CBC are characteristic of
viral lymphoproliferative responses.
4. Which process results in the movement of water between the
intracellular fluid (ICF) and extracellular fluid (ECF) compartments?
A. Active transport
B. Facilitated diffusion
C. Osmosis
D. Endocytosis
C. Osmosis
RATIONALE: Osmosis is the movement of water across a
semipermeable membrane from an area of low solute concentration to high
solute concentration to maintain equilibrium. It is the primary mechanism
for water movement between fluid compartments.
5. A patient has a pH of 7.22 and a PaCO2 of 60 mmHg. This is
characteristic of which acid-base disorder?
, A. Metabolic Acidosis
B. Respiratory Acidosis
C. Metabolic Alkalosis
D. Respiratory Alkalosis
B. Respiratory Acidosis
RATIONALE: A pH below 7.35 indicates acidosis, and a PaCO2 above
45 mmHg indicates the cause is respiratory (hypoventilation). The lungs
are failing to adequately eliminate carbon dioxide.
6. Which type of cell adaptation occurs when the lining of the
esophagus changes from squamous to columnar cells due to chronic
acid reflux?
A. Atrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
C. Metaplasia
RATIONALE: Metaplasia is the reversible replacement of one mature
cell type by another, often as a protective response to chronic irritation.
Barrett esophagus is a classic example where squamous epithelium is
replaced by columnar epithelium in response to chronic acid exposure.
7. What is the primary cause of symptoms in pernicious anemia?
A. Iron deficiency
B. Chronic blood loss
C. Lack of intrinsic factor
D. Folic acid deficiency
C. Lack of intrinsic factor
RATIONALE: Intrinsic factor is required for vitamin B12 absorption in
the ileum; without it, megaloblastic anemia and neurological symptoms
occur. Pernicious anemia is an autoimmune condition targeting parietal
cells and intrinsic factor production.
ADVANCED PATHOPHYSIOLOGY EXPECTED QUESTIONS
AND ANSWERS () (VERIFIED ANSWERS)-
CHAMBERLAIN
CORE DOMAINS
Cellular Adaptation, Injury, and Death
Genetics and Genetic Disorders
Inflammation and Immunity
Hematologic Pathophysiology
Cardiovascular Pathophysiology
Pulmonary Pathophysiology
Renal and Urologic Pathophysiology
Endocrine and Metabolic Pathophysiology
Neurologic Pathophysiology
Gastrointestinal and Hepatobiliary Pathophysiology
INTRODUCTION
This comprehensive examination assesses the advanced pathophysiology
knowledge and clinical reasoning skills required of the graduate nursing
student. It evaluates foundational mechanisms of cellular adaptation, injury,
inflammation, immunity, and system-based pathophysiology across the
lifespan. The examination employs multiple-choice and case-based
questions to simulate realistic clinical encounters. Emphasis is placed on
critical thinking, integration of pathophysiologic mechanisms with clinical
presentation, and the application of evidence-based diagnostic reasoning.
This assessment prepares candidates for the rigor of advanced practice
nursing certification and real-world clinical practice.
SECTION ONE: QUESTIONS 1–100
1. A 58-year-old male construction worker with a 30-year history of
smoking two packs per day presents with chronic fatigue and
shortness of breath. Arterial blood gas reveals a carboxyhemoglobin
level of 12%. Cardiac myocytes show mitochondrial swelling and
,cristae disruption on electron microscopy. The cellular injury pattern
observed is best classified as which type?
A. Ischemic injury due to reduced arterial blood flow
B. Hypoxic injury due to decreased oxygen-carrying capacity of hemoglobin
C. Chemical injury due to direct toxin-mediated destruction of cell
membranes
D. Apoptotic injury due to programmed cell death triggered by carbon
monoxide
B. Hypoxic injury due to decreased oxygen-carrying capacity of
hemoglobin
RATIONALE: Carbon monoxide binds hemoglobin with 200 times the
affinity of oxygen, drastically reducing oxygen-carrying capacity and
causing hypoxic injury to tissues, including mitochondrial swelling and
cristae disruption. Ischemic injury refers specifically to reduced blood flow
rather than impaired oxygen transport.
2. A 42-year-old female with a long history of poorly controlled
hypertension is admitted with severe headache and visual
disturbances. Echocardiography reveals significant left ventricular
wall thickening, and myocardial biopsy shows enlarged cardiac
myocytes with increased amounts of cytoplasmic structural proteins.
This myocardial change is best described as which cellular
adaptation?
A. Hyperplasia resulting from increased number of cardiac myocytes under
stress
B. Hypertrophy resulting from increased cell size due to chronic pressure
overload
C. Metaplasia resulting from replacement of one mature cell type by
another
D. Dysplasia resulting from disorganized cellular proliferation in the
myocardium
B. Hypertrophy resulting from increased cell size due to chronic
pressure overload
, RATIONALE: Cardiac myocytes are terminally differentiated cells that
cannot undergo hyperplasia, so they respond to chronic pressure overload
by increasing in size through the addition of structural proteins, which
defines hypertrophy.
3. A 4-year-old boy is brought to the pediatric emergency department
with a 2-day history of high fever, severe sore throat, and swollen
cervical lymph nodes. A complete blood count shows marked
leukocytosis with atypical lymphocytes. Which pathophysiologic
mechanism best explains the lymph node enlargement?
A. Direct bacterial invasion of lymphoid tissue
B. Hyperplasia of lymphoid tissue in response to viral infection
C. Malignant transformation of lymphocytes
D. Granulomatous inflammation from mycobacterial infection
B. Hyperplasia of lymphoid tissue in response to viral infection
RATIONALE: Lymphoid hyperplasia is a common reactive response to
viral infections such as Epstein-Barr virus, leading to lymph node
enlargement. The atypical lymphocytes seen on CBC are characteristic of
viral lymphoproliferative responses.
4. Which process results in the movement of water between the
intracellular fluid (ICF) and extracellular fluid (ECF) compartments?
A. Active transport
B. Facilitated diffusion
C. Osmosis
D. Endocytosis
C. Osmosis
RATIONALE: Osmosis is the movement of water across a
semipermeable membrane from an area of low solute concentration to high
solute concentration to maintain equilibrium. It is the primary mechanism
for water movement between fluid compartments.
5. A patient has a pH of 7.22 and a PaCO2 of 60 mmHg. This is
characteristic of which acid-base disorder?
, A. Metabolic Acidosis
B. Respiratory Acidosis
C. Metabolic Alkalosis
D. Respiratory Alkalosis
B. Respiratory Acidosis
RATIONALE: A pH below 7.35 indicates acidosis, and a PaCO2 above
45 mmHg indicates the cause is respiratory (hypoventilation). The lungs
are failing to adequately eliminate carbon dioxide.
6. Which type of cell adaptation occurs when the lining of the
esophagus changes from squamous to columnar cells due to chronic
acid reflux?
A. Atrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
C. Metaplasia
RATIONALE: Metaplasia is the reversible replacement of one mature
cell type by another, often as a protective response to chronic irritation.
Barrett esophagus is a classic example where squamous epithelium is
replaced by columnar epithelium in response to chronic acid exposure.
7. What is the primary cause of symptoms in pernicious anemia?
A. Iron deficiency
B. Chronic blood loss
C. Lack of intrinsic factor
D. Folic acid deficiency
C. Lack of intrinsic factor
RATIONALE: Intrinsic factor is required for vitamin B12 absorption in
the ileum; without it, megaloblastic anemia and neurological symptoms
occur. Pernicious anemia is an autoimmune condition targeting parietal
cells and intrinsic factor production.
