1
NSG 5003 ADVANCED PATHOPHYSIOLOGY
KNOWLEDGE CHECK QUIZ ANSWERS
1. A patient experiences prolonged tissue hypoxia resulting from severe
hypotension. At the cellular level, inadequate oxygen delivery causes impaired
oxidative phosphorylation and declining ATP production. The sodium-potassium
pump subsequently becomes less effective, resulting in intracellular sodium and
water accumulation. Which cellular change best represents the early reversible
phase of this injury?
A. Cellular swelling caused by failure of ion transport
B. Irreversible mitochondrial membrane rupture
C. Extensive nuclear fragmentation with membrane destruction
D. Complete dissolution of lysosomal membranes
Answer: A
2. A patient develops acute inflammation after a bacterial organism enters a
superficial wound. Within minutes, local blood vessels undergo changes that
increase blood flow and vascular permeability. Neutrophils subsequently migrate
toward the injured tissue by following chemical concentration gradients. Which
process specifically describes the directed movement of leukocytes toward the site
of injury?
A. Margination
B. Chemotaxis
C. Diapedesis
D. Opsonization
Answer: B
3. A patient with a history of recurrent respiratory infections undergoes evaluation
for an inherited disorder involving impaired immune function. Laboratory testing
demonstrates reduced ability to produce effective antibodies against extracellular
pathogens. Which component of adaptive immunity is primarily responsible for
antibody-mediated protection?
A. B lymphocytes
B. Natural killer cells
,2
C. Neutrophils
D. Cytotoxic T lymphocytes
Answer: A
4. A patient develops an immediate hypersensitivity reaction shortly after exposure
to an environmental allergen. The patient develops bronchoconstriction, increased
mucus production, and tissue edema because inflammatory mediators are rapidly
released from sensitized cells. Which immunoglobulin is most strongly associated
with this type of hypersensitivity?
A. IgA
B. IgG
C. IgM
D. IgE
Answer: D
5. A patient presents with fever, hypotension, tachycardia, and altered mental
status during a severe systemic bacterial infection. The inflammatory response
becomes widespread and produces significant vasodilation and increased vascular
permeability. Which pathophysiologic process most directly contributes to
hypotension during severe systemic inflammation?
A. Generalized peripheral vasodilation and capillary leakage
B. Increased systemic vascular resistance from vasoconstriction
C. Increased plasma oncotic pressure
D. Reduced endothelial permeability
Answer: A
6. A patient with a history of hypertension develops progressive left ventricular
enlargement. The increased workload causes cardiac muscle cells to increase in
size rather than number. Which adaptive cellular response is occurring?
A. Hyperplasia
B. Hypertrophy
C. Atrophy
D. Metaplasia
Answer: B
,3
7. A patient with chronic gastroesophageal reflux develops replacement of the
normal esophageal squamous epithelium with a different epithelial cell type better
able to tolerate chronic irritation. Which cellular adaptation is demonstrated?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
Answer: C
8. A patient develops progressive renal dysfunction associated with long-standing
diabetes mellitus. Persistent hyperglycemia produces biochemical and vascular
changes that damage renal structures over time. Which mechanism is particularly
important in the development of diabetic microvascular injury?
A. Chronic nonenzymatic glycation of proteins
B. Acute destruction of erythrocytes
C. Complete inhibition of insulin receptors
D. Increased breakdown of circulating albumin
Answer: A
9. A patient with chronic obstructive pulmonary disease has difficulty exhaling
because of persistent airflow limitation. Destruction of alveolar walls decreases the
surface area available for gas exchange and reduces elastic recoil. Which disease
process most closely corresponds to this pathophysiology?
A. Pulmonary edema
B. Emphysema
C. Pleural effusion
D. Pulmonary fibrosis
Answer: B
10. A patient with severe asthma develops acute bronchoconstriction after
exposure to a known trigger. Airway smooth muscle contracts, mucosal edema
develops, and mucus production increases, resulting in airway narrowing. Which
mechanism is most responsible for the acute reduction in airway diameter?
, 4
A. Bronchial smooth-muscle contraction
B. Destruction of alveolar septa
C. Decreased pulmonary blood flow
D. Increased pleural pressure
Answer: A
11. A patient develops acute kidney injury after prolonged hypotension. Reduced
renal perfusion decreases glomerular filtration and activates compensatory
mechanisms intended to preserve circulating volume. Which hormonal system
becomes particularly important in maintaining blood pressure and renal perfusion?
A. Renin-angiotensin-aldosterone system
B. Hypothalamic-pituitary-thyroid axis
C. Parathyroid-vitamin D system
D. Insulin-glucagon system
Answer: A
12. A patient with chronic renal disease develops metabolic abnormalities because
the kidneys are unable to adequately eliminate hydrogen ions and maintain normal
bicarbonate concentrations. Which acid-base disturbance is most consistent with
advanced renal dysfunction?
A. Respiratory alkalosis
B. Metabolic alkalosis
C. Respiratory acidosis
D. Metabolic acidosis
Answer: D
13. A patient develops type 1 diabetes mellitus after autoimmune destruction of
pancreatic beta cells. The loss of these cells results in inadequate production of the
hormone required for glucose uptake and regulation. Which hormone is deficient?
A. Glucagon
B. Insulin
C. Cortisol
D. Aldosterone
Answer: B
NSG 5003 ADVANCED PATHOPHYSIOLOGY
KNOWLEDGE CHECK QUIZ ANSWERS
1. A patient experiences prolonged tissue hypoxia resulting from severe
hypotension. At the cellular level, inadequate oxygen delivery causes impaired
oxidative phosphorylation and declining ATP production. The sodium-potassium
pump subsequently becomes less effective, resulting in intracellular sodium and
water accumulation. Which cellular change best represents the early reversible
phase of this injury?
A. Cellular swelling caused by failure of ion transport
B. Irreversible mitochondrial membrane rupture
C. Extensive nuclear fragmentation with membrane destruction
D. Complete dissolution of lysosomal membranes
Answer: A
2. A patient develops acute inflammation after a bacterial organism enters a
superficial wound. Within minutes, local blood vessels undergo changes that
increase blood flow and vascular permeability. Neutrophils subsequently migrate
toward the injured tissue by following chemical concentration gradients. Which
process specifically describes the directed movement of leukocytes toward the site
of injury?
A. Margination
B. Chemotaxis
C. Diapedesis
D. Opsonization
Answer: B
3. A patient with a history of recurrent respiratory infections undergoes evaluation
for an inherited disorder involving impaired immune function. Laboratory testing
demonstrates reduced ability to produce effective antibodies against extracellular
pathogens. Which component of adaptive immunity is primarily responsible for
antibody-mediated protection?
A. B lymphocytes
B. Natural killer cells
,2
C. Neutrophils
D. Cytotoxic T lymphocytes
Answer: A
4. A patient develops an immediate hypersensitivity reaction shortly after exposure
to an environmental allergen. The patient develops bronchoconstriction, increased
mucus production, and tissue edema because inflammatory mediators are rapidly
released from sensitized cells. Which immunoglobulin is most strongly associated
with this type of hypersensitivity?
A. IgA
B. IgG
C. IgM
D. IgE
Answer: D
5. A patient presents with fever, hypotension, tachycardia, and altered mental
status during a severe systemic bacterial infection. The inflammatory response
becomes widespread and produces significant vasodilation and increased vascular
permeability. Which pathophysiologic process most directly contributes to
hypotension during severe systemic inflammation?
A. Generalized peripheral vasodilation and capillary leakage
B. Increased systemic vascular resistance from vasoconstriction
C. Increased plasma oncotic pressure
D. Reduced endothelial permeability
Answer: A
6. A patient with a history of hypertension develops progressive left ventricular
enlargement. The increased workload causes cardiac muscle cells to increase in
size rather than number. Which adaptive cellular response is occurring?
A. Hyperplasia
B. Hypertrophy
C. Atrophy
D. Metaplasia
Answer: B
,3
7. A patient with chronic gastroesophageal reflux develops replacement of the
normal esophageal squamous epithelium with a different epithelial cell type better
able to tolerate chronic irritation. Which cellular adaptation is demonstrated?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
Answer: C
8. A patient develops progressive renal dysfunction associated with long-standing
diabetes mellitus. Persistent hyperglycemia produces biochemical and vascular
changes that damage renal structures over time. Which mechanism is particularly
important in the development of diabetic microvascular injury?
A. Chronic nonenzymatic glycation of proteins
B. Acute destruction of erythrocytes
C. Complete inhibition of insulin receptors
D. Increased breakdown of circulating albumin
Answer: A
9. A patient with chronic obstructive pulmonary disease has difficulty exhaling
because of persistent airflow limitation. Destruction of alveolar walls decreases the
surface area available for gas exchange and reduces elastic recoil. Which disease
process most closely corresponds to this pathophysiology?
A. Pulmonary edema
B. Emphysema
C. Pleural effusion
D. Pulmonary fibrosis
Answer: B
10. A patient with severe asthma develops acute bronchoconstriction after
exposure to a known trigger. Airway smooth muscle contracts, mucosal edema
develops, and mucus production increases, resulting in airway narrowing. Which
mechanism is most responsible for the acute reduction in airway diameter?
, 4
A. Bronchial smooth-muscle contraction
B. Destruction of alveolar septa
C. Decreased pulmonary blood flow
D. Increased pleural pressure
Answer: A
11. A patient develops acute kidney injury after prolonged hypotension. Reduced
renal perfusion decreases glomerular filtration and activates compensatory
mechanisms intended to preserve circulating volume. Which hormonal system
becomes particularly important in maintaining blood pressure and renal perfusion?
A. Renin-angiotensin-aldosterone system
B. Hypothalamic-pituitary-thyroid axis
C. Parathyroid-vitamin D system
D. Insulin-glucagon system
Answer: A
12. A patient with chronic renal disease develops metabolic abnormalities because
the kidneys are unable to adequately eliminate hydrogen ions and maintain normal
bicarbonate concentrations. Which acid-base disturbance is most consistent with
advanced renal dysfunction?
A. Respiratory alkalosis
B. Metabolic alkalosis
C. Respiratory acidosis
D. Metabolic acidosis
Answer: D
13. A patient develops type 1 diabetes mellitus after autoimmune destruction of
pancreatic beta cells. The loss of these cells results in inadequate production of the
hormone required for glucose uptake and regulation. Which hormone is deficient?
A. Glucagon
B. Insulin
C. Cortisol
D. Aldosterone
Answer: B
