WGU D115 – Advanced Pathophysiology for
the Advanced Practice Nurse (OA) Practice
Exam Complete LATEST UPDATE THIS
YEAR.pdf
Total Questions: 150 Original Graduate-Level Practice Questions with Rationales
Coverage: Cellular Adaptation • Inflammation and Immunity • Genetics • Fluid and Electrolyte Disorders •
Cardiovascular Pathophysiology • Respiratory Disorders • Renal Disease • Gastrointestinal and Hepatic
Disorders • Hematology • Endocrine Disorders • Neurological Disease • Autoimmune Conditions • Shock,
Sepsis, and Multisystem Organ Dysfunction • Advanced Clinical Reasoning and Differential Diagnosis.
1.
A client with longstanding hypertension develops left ventricular hypertrophy.
Which cellular adaptation best explains this change?
A. Hyperplasia
B. Metaplasia
C. Hypertrophy
D. Dysplasia
Answer: C. Hypertrophy
,Rationale: Hypertrophy is an increase in cell size in response to increased
workload. Cardiac muscle cells enlarge because they have limited ability to
undergo hyperplasia.
2.
A client experiences prolonged myocardial ischemia resulting in irreversible
injury and cell membrane rupture. Which type of cellular death has most likely
occurred?
A. Apoptosis
B. Necrosis
C. Atrophy
D. Autophagy
Answer: B. Necrosis
Rationale: Necrosis results from irreversible cellular injury and is characterized
by cell swelling, membrane rupture, and inflammation.
,3.
A patient with severe dehydration develops increased serum osmolality. Which
movement of water occurs at the cellular level?
A. Water moves into cells, causing swelling.
B. Water moves out of cells, causing cellular shrinkage.
C. Water movement stops completely.
D. Sodium moves into cells and water remains unchanged.
Answer: B. Water moves out of cells, causing cellular shrinkage.
Rationale: Increased extracellular osmolality causes water to leave cells by
osmosis, resulting in cellular dehydration.
4.
A client develops a fever after exposure to bacterial pathogens. Which cytokine
is most responsible for stimulating the hypothalamic temperature set point?
A. Erythropoietin
B. Histamine
, C. Interleukin-1
D. Insulin
Answer: C. Interleukin-1
Rationale: Interleukin-1 is a proinflammatory cytokine that stimulates
prostaglandin production and increases the hypothalamic temperature set point.
5.
A patient with a severe allergic reaction develops widespread vasodilation and
bronchoconstriction within minutes of exposure to peanuts. Which
hypersensitivity mechanism is responsible?
A. Type I hypersensitivity
B. Type II hypersensitivity
C. Type III hypersensitivity
D. Type IV hypersensitivity
Answer: A. Type I hypersensitivity
the Advanced Practice Nurse (OA) Practice
Exam Complete LATEST UPDATE THIS
YEAR.pdf
Total Questions: 150 Original Graduate-Level Practice Questions with Rationales
Coverage: Cellular Adaptation • Inflammation and Immunity • Genetics • Fluid and Electrolyte Disorders •
Cardiovascular Pathophysiology • Respiratory Disorders • Renal Disease • Gastrointestinal and Hepatic
Disorders • Hematology • Endocrine Disorders • Neurological Disease • Autoimmune Conditions • Shock,
Sepsis, and Multisystem Organ Dysfunction • Advanced Clinical Reasoning and Differential Diagnosis.
1.
A client with longstanding hypertension develops left ventricular hypertrophy.
Which cellular adaptation best explains this change?
A. Hyperplasia
B. Metaplasia
C. Hypertrophy
D. Dysplasia
Answer: C. Hypertrophy
,Rationale: Hypertrophy is an increase in cell size in response to increased
workload. Cardiac muscle cells enlarge because they have limited ability to
undergo hyperplasia.
2.
A client experiences prolonged myocardial ischemia resulting in irreversible
injury and cell membrane rupture. Which type of cellular death has most likely
occurred?
A. Apoptosis
B. Necrosis
C. Atrophy
D. Autophagy
Answer: B. Necrosis
Rationale: Necrosis results from irreversible cellular injury and is characterized
by cell swelling, membrane rupture, and inflammation.
,3.
A patient with severe dehydration develops increased serum osmolality. Which
movement of water occurs at the cellular level?
A. Water moves into cells, causing swelling.
B. Water moves out of cells, causing cellular shrinkage.
C. Water movement stops completely.
D. Sodium moves into cells and water remains unchanged.
Answer: B. Water moves out of cells, causing cellular shrinkage.
Rationale: Increased extracellular osmolality causes water to leave cells by
osmosis, resulting in cellular dehydration.
4.
A client develops a fever after exposure to bacterial pathogens. Which cytokine
is most responsible for stimulating the hypothalamic temperature set point?
A. Erythropoietin
B. Histamine
, C. Interleukin-1
D. Insulin
Answer: C. Interleukin-1
Rationale: Interleukin-1 is a proinflammatory cytokine that stimulates
prostaglandin production and increases the hypothalamic temperature set point.
5.
A patient with a severe allergic reaction develops widespread vasodilation and
bronchoconstriction within minutes of exposure to peanuts. Which
hypersensitivity mechanism is responsible?
A. Type I hypersensitivity
B. Type II hypersensitivity
C. Type III hypersensitivity
D. Type IV hypersensitivity
Answer: A. Type I hypersensitivity
