Applied Pathophysiology for the Advanced Practice Nurse (2nd Edition) by
Dlugasch & Story – Advanced Nursing Study Guide_ Test Bank with Answers
,CHAPTER 1: Foundations of Pathophysiology
1. Question Stem: A 42-year-old female presents with progressive fatigue and joint pain.
Laboratory studies reveal elevated inflammatory markers. Her nurse practitioner understands
that understanding cellular adaptation is essential. Which cellular response describes the
hypertrophy of cardiac myocytes in response to chronic hypertension?
A. An increase in cell number due to hormonal stimulation B. An increase in cell size due to
increased functional demand C. A decrease in cell size due to disuse or inadequate nutrition D.
A change from one differentiated cell type to another
Correct Answer: B
Explainer: The correct answer is B, an increase in cell size due to increased functional demand.
Hypertrophy refers to an increase in the size of cells, resulting in an increase in the size of the
organ. In chronic hypertension, the heart must work against increased afterload, leading to
hypertrophy of cardiac myocytes to generate greater contractile force. This is an adaptive
mechanism to maintain cardiac output but can eventually become maladaptive, leading to
heart failure. Option A describes hyperplasia (increase in cell number), which occurs in tissues
capable of mitosis but not in cardiac muscle. Option C describes atrophy. Option D describes
metaplasia, a reversible change where one differentiated cell type replaces another, often in
response to chronic irritation.
2. Question Stem: A 55-year-old male with a 30-pack-year smoking history is found to have
cellular changes in his bronchial epithelium. The cells have altered shape and size with nuclear
hyperchromasia, but the basement membrane remains intact. Which pathophysiologic concept
best describes these findings?
A. Neoplasia with metastatic potential B. Dysplasia, a potentially reversible pre-neoplastic
change C. Metaplasia with transformation to a more specialized cell type D. Anaplasia with
complete loss of cellular differentiation
Correct Answer: B
Explainer: The correct answer is B, dysplasia. Dysplasia refers to disordered cellular
development with variations in cell size and shape, nuclear enlargement, and hyperchromasia.
It is often a precursor to neoplasia but may be reversible if the stimulus (in this case, smoking)
is removed. Importantly, dysplasia does not breach the basement membrane. Option A is
incorrect because neoplasia implies autonomous, uncontrolled growth with potential for
invasion or metastasis. Option C is incorrect because metaplasia involves replacement of one
mature cell type with another, not the disordered maturation seen here. Option D describes
anaplasia, which is a hallmark of malignant tumors with complete loss of differentiation and
bizarre cellular morphology.
,3. Question Stem: During cellular stress, a 68-year-old patient's myocardial cells demonstrate
accumulation of lipofuscin pigment. Which cellular process best explains this finding?
A. Active phagocytosis of bacterial debris B. Autophagy of damaged organelles with incomplete
degradation C. Endocytosis of extracellular lipid particles D. Exocytosis of cellular waste
products
Correct Answer: B
Explainer: The correct answer is B, autophagy of damaged organelles with incomplete
degradation. Lipofuscin ("wear-and-tear" pigment) accumulates in long-lived cells like neurons
and cardiac myocytes as a result of autophagy, where cellular components are enclosed in
vesicles and fused with lysosomes for degradation. When lysosomal enzymes cannot
completely digest certain substances, residual bodies containing lipofuscin remain. This
increases with age and cellular stress. Option A describes phagocytosis, typically performed by
macrophages, not intrinsic cellular accumulation. Option C describes endocytosis of
extracellular substances. Option D describes exocytosis, which is the release of substances from
cells, not intracellular accumulation.
4. Question Stem: A patient with sepsis develops lactic acidosis. The nurse practitioner
understands that this results from impaired cellular metabolism. Which cellular organelle is
primarily responsible for oxidative phosphorylation and ATP production under aerobic
conditions?
A. Ribosomes B. Smooth endoplasmic reticulum C. Mitochondria D. Golgi apparatus
Correct Answer: C
Explainer: The correct answer is C, mitochondria. Mitochondria are the powerhouses of the cell,
containing the electron transport chain and ATP synthase necessary for oxidative
phosphorylation. In sepsis, tissue hypoperfusion leads to cellular hypoxia, forcing cells to rely
on anaerobic glycolysis. This results in lactate accumulation as pyruvate is converted to lactate
instead of entering the mitochondria for the Krebs cycle, leading to lactic acidosis. Option A
(ribosomes) is responsible for protein synthesis. Option B (smooth ER) is involved in lipid
synthesis and detoxification. Option D (Golgi apparatus) modifies, packages, and sorts proteins
and lipids.
5. Question Stem: A 35-year-old female presents with symptoms of multiple organ dysfunction.
Her laboratory values show elevated lactate, hypoglycemia, and coagulopathy. Understanding
the stages of cellular response to stress is critical. Which sequence correctly describes the
progression of cellular injury when stress exceeds adaptive capacity?
A. Reversible injury → irreversible injury → cell death B. Atrophy → metaplasia → hyperplasia
→ neoplasia C. Steatosis → apoptosis → necrosis → fibrosis D. Compensation →
decompensation → irreversible shock
, Correct Answer: A
Explainer: The correct answer is A, reversible injury → irreversible injury → cell death. When
cellular stress exceeds adaptive mechanisms, cells first undergo reversible injury characterized
by cellular swelling, fatty change, and organelle dysfunction. If the stress continues, irreversible
injury occurs with damage to cell membranes, mitochondrial dysfunction, and lysosomal
rupture, ultimately leading to cell death through necrosis or apoptosis. This progression is
fundamental to understanding multiple organ dysfunction syndrome. Option B describes
adaptive and neoplastic changes, not injury progression. Option C mixes different pathologic
processes incorrectly. Option D describes systemic hemodynamic stages, not cellular injury
progression.
6. Question Stem: A patient undergoing cancer chemotherapy experiences significant cellular
damage. The nurse practitioner explains that some cells will die through a programmed,
energy-dependent process that maintains membrane integrity and does not trigger
inflammation. Which type of cell death is being described?
A. Necrosis B. Apoptosis C. Autophagic cell death D. Pyroptosis
Correct Answer: B
Explainer: The correct answer is B, apoptosis. Apoptosis is programmed cell death characterized
by cell shrinkage, chromatin condensation, formation of apoptotic bodies, and phagocytosis by
neighboring cells or macrophages without triggering an inflammatory response. It requires ATP
and is regulated by caspases. Many chemotherapeutic agents induce apoptosis in cancer cells.
Option A (necrosis) is accidental cell death due to injury, characterized by cell swelling,
membrane rupture, and inflammation. Option C involves autophagy but may or may not be
programmed. Option D (pyroptosis) is a pro-inflammatory form of programmed cell death
associated with inflammasome activation.
7. Question Stem: A 28-year-old athlete training at high altitude experiences increased
erythropoietin production. Which principle of pathophysiology best explains this adaptive
response?
A. Genetic mutation leading to altered protein synthesis B. Cellular adaptation to
environmental stress through gene expression changes C. Metaplasia of renal tubular cells D.
Dysplasia of bone marrow precursors
Correct Answer: B
Explainer: The correct answer is B, cellular adaptation to environmental stress through gene
expression changes. At high altitude, decreased oxygen tension stimulates renal cells to
produce erythropoietin, which increases red blood cell production. This represents cellular and
systemic adaptation to environmental stress through altered gene expression and protein
synthesis, not permanent genetic mutation. Option A describes genetic mutation, which is
Dlugasch & Story – Advanced Nursing Study Guide_ Test Bank with Answers
,CHAPTER 1: Foundations of Pathophysiology
1. Question Stem: A 42-year-old female presents with progressive fatigue and joint pain.
Laboratory studies reveal elevated inflammatory markers. Her nurse practitioner understands
that understanding cellular adaptation is essential. Which cellular response describes the
hypertrophy of cardiac myocytes in response to chronic hypertension?
A. An increase in cell number due to hormonal stimulation B. An increase in cell size due to
increased functional demand C. A decrease in cell size due to disuse or inadequate nutrition D.
A change from one differentiated cell type to another
Correct Answer: B
Explainer: The correct answer is B, an increase in cell size due to increased functional demand.
Hypertrophy refers to an increase in the size of cells, resulting in an increase in the size of the
organ. In chronic hypertension, the heart must work against increased afterload, leading to
hypertrophy of cardiac myocytes to generate greater contractile force. This is an adaptive
mechanism to maintain cardiac output but can eventually become maladaptive, leading to
heart failure. Option A describes hyperplasia (increase in cell number), which occurs in tissues
capable of mitosis but not in cardiac muscle. Option C describes atrophy. Option D describes
metaplasia, a reversible change where one differentiated cell type replaces another, often in
response to chronic irritation.
2. Question Stem: A 55-year-old male with a 30-pack-year smoking history is found to have
cellular changes in his bronchial epithelium. The cells have altered shape and size with nuclear
hyperchromasia, but the basement membrane remains intact. Which pathophysiologic concept
best describes these findings?
A. Neoplasia with metastatic potential B. Dysplasia, a potentially reversible pre-neoplastic
change C. Metaplasia with transformation to a more specialized cell type D. Anaplasia with
complete loss of cellular differentiation
Correct Answer: B
Explainer: The correct answer is B, dysplasia. Dysplasia refers to disordered cellular
development with variations in cell size and shape, nuclear enlargement, and hyperchromasia.
It is often a precursor to neoplasia but may be reversible if the stimulus (in this case, smoking)
is removed. Importantly, dysplasia does not breach the basement membrane. Option A is
incorrect because neoplasia implies autonomous, uncontrolled growth with potential for
invasion or metastasis. Option C is incorrect because metaplasia involves replacement of one
mature cell type with another, not the disordered maturation seen here. Option D describes
anaplasia, which is a hallmark of malignant tumors with complete loss of differentiation and
bizarre cellular morphology.
,3. Question Stem: During cellular stress, a 68-year-old patient's myocardial cells demonstrate
accumulation of lipofuscin pigment. Which cellular process best explains this finding?
A. Active phagocytosis of bacterial debris B. Autophagy of damaged organelles with incomplete
degradation C. Endocytosis of extracellular lipid particles D. Exocytosis of cellular waste
products
Correct Answer: B
Explainer: The correct answer is B, autophagy of damaged organelles with incomplete
degradation. Lipofuscin ("wear-and-tear" pigment) accumulates in long-lived cells like neurons
and cardiac myocytes as a result of autophagy, where cellular components are enclosed in
vesicles and fused with lysosomes for degradation. When lysosomal enzymes cannot
completely digest certain substances, residual bodies containing lipofuscin remain. This
increases with age and cellular stress. Option A describes phagocytosis, typically performed by
macrophages, not intrinsic cellular accumulation. Option C describes endocytosis of
extracellular substances. Option D describes exocytosis, which is the release of substances from
cells, not intracellular accumulation.
4. Question Stem: A patient with sepsis develops lactic acidosis. The nurse practitioner
understands that this results from impaired cellular metabolism. Which cellular organelle is
primarily responsible for oxidative phosphorylation and ATP production under aerobic
conditions?
A. Ribosomes B. Smooth endoplasmic reticulum C. Mitochondria D. Golgi apparatus
Correct Answer: C
Explainer: The correct answer is C, mitochondria. Mitochondria are the powerhouses of the cell,
containing the electron transport chain and ATP synthase necessary for oxidative
phosphorylation. In sepsis, tissue hypoperfusion leads to cellular hypoxia, forcing cells to rely
on anaerobic glycolysis. This results in lactate accumulation as pyruvate is converted to lactate
instead of entering the mitochondria for the Krebs cycle, leading to lactic acidosis. Option A
(ribosomes) is responsible for protein synthesis. Option B (smooth ER) is involved in lipid
synthesis and detoxification. Option D (Golgi apparatus) modifies, packages, and sorts proteins
and lipids.
5. Question Stem: A 35-year-old female presents with symptoms of multiple organ dysfunction.
Her laboratory values show elevated lactate, hypoglycemia, and coagulopathy. Understanding
the stages of cellular response to stress is critical. Which sequence correctly describes the
progression of cellular injury when stress exceeds adaptive capacity?
A. Reversible injury → irreversible injury → cell death B. Atrophy → metaplasia → hyperplasia
→ neoplasia C. Steatosis → apoptosis → necrosis → fibrosis D. Compensation →
decompensation → irreversible shock
, Correct Answer: A
Explainer: The correct answer is A, reversible injury → irreversible injury → cell death. When
cellular stress exceeds adaptive mechanisms, cells first undergo reversible injury characterized
by cellular swelling, fatty change, and organelle dysfunction. If the stress continues, irreversible
injury occurs with damage to cell membranes, mitochondrial dysfunction, and lysosomal
rupture, ultimately leading to cell death through necrosis or apoptosis. This progression is
fundamental to understanding multiple organ dysfunction syndrome. Option B describes
adaptive and neoplastic changes, not injury progression. Option C mixes different pathologic
processes incorrectly. Option D describes systemic hemodynamic stages, not cellular injury
progression.
6. Question Stem: A patient undergoing cancer chemotherapy experiences significant cellular
damage. The nurse practitioner explains that some cells will die through a programmed,
energy-dependent process that maintains membrane integrity and does not trigger
inflammation. Which type of cell death is being described?
A. Necrosis B. Apoptosis C. Autophagic cell death D. Pyroptosis
Correct Answer: B
Explainer: The correct answer is B, apoptosis. Apoptosis is programmed cell death characterized
by cell shrinkage, chromatin condensation, formation of apoptotic bodies, and phagocytosis by
neighboring cells or macrophages without triggering an inflammatory response. It requires ATP
and is regulated by caspases. Many chemotherapeutic agents induce apoptosis in cancer cells.
Option A (necrosis) is accidental cell death due to injury, characterized by cell swelling,
membrane rupture, and inflammation. Option C involves autophagy but may or may not be
programmed. Option D (pyroptosis) is a pro-inflammatory form of programmed cell death
associated with inflammasome activation.
7. Question Stem: A 28-year-old athlete training at high altitude experiences increased
erythropoietin production. Which principle of pathophysiology best explains this adaptive
response?
A. Genetic mutation leading to altered protein synthesis B. Cellular adaptation to
environmental stress through gene expression changes C. Metaplasia of renal tubular cells D.
Dysplasia of bone marrow precursors
Correct Answer: B
Explainer: The correct answer is B, cellular adaptation to environmental stress through gene
expression changes. At high altitude, decreased oxygen tension stimulates renal cells to
produce erythropoietin, which increases red blood cell production. This represents cellular and
systemic adaptation to environmental stress through altered gene expression and protein
synthesis, not permanent genetic mutation. Option A describes genetic mutation, which is
