NR 283 PATHOPHYSIOLOGY COMPREHENSIVE
EXAM (PRACTICE TEST & STUDY GUIDE) | 2026–2027
EXAM PREP | DETAILED RATIONALES | PRACTICE
QUESTIONS | CERTIFICATION PREPARATION
1. A nurse is teaching a patient about cellular adaptation. Which process occurs when cells
increase in size due to increased workload?
A. Hyperplasia
B. Metaplasia
C. Hypertrophy
D. Dysplasia
Correct Answer: C. Hypertrophy
Rationale: Hypertrophy is an increase in cell size that results in enlargement of an organ or
tissue. Hyperplasia refers to an increase in cell number, metaplasia is replacement of one
mature cell type with another, and dysplasia involves abnormal cellular growth.
2. A patient experiences tissue injury after prolonged interruption of blood flow. What is
the most likely cause of this cellular damage?
A. Ischemia
B. Hyperplasia
C. Metastasis
D. Fibrosis
Correct Answer: A. Ischemia
Rationale: Ischemia results from inadequate blood supply and oxygen delivery to tissues, leading
to cellular injury. The other options are not primary causes of acute cellular damage due to
reduced perfusion.
3. Which electrolyte imbalance is most commonly associated with cardiac dysrhythmias?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hypermagnesemia
Correct Answer: B. Hypokalemia
,Rationale: Potassium plays a critical role in cardiac conduction. Low potassium levels can lead
to dangerous arrhythmias. Sodium, calcium, and magnesium abnormalities may also affect the
heart but are less commonly implicated than hypokalemia.
4. A patient develops edema following severe hypoalbuminemia. What is the primary
mechanism responsible?
A. Increased hydrostatic pressure
B. Increased lymphatic drainage
C. Reduced plasma oncotic pressure
D. Increased red blood cell production
Correct Answer: C. Reduced plasma oncotic pressure
Rationale: Albumin helps maintain oncotic pressure that keeps fluid within blood vessels. Low
albumin allows fluid to shift into interstitial spaces, causing edema.
5. Which type of necrosis is most commonly associated with myocardial infarction?
A. Liquefactive necrosis
B. Caseous necrosis
C. Fat necrosis
D. Coagulative necrosis
Correct Answer: D. Coagulative necrosis
Rationale: Coagulative necrosis occurs in ischemic injury of solid organs such as the heart and
kidneys. Liquefactive necrosis is more common in brain infarctions and abscesses.
6. A patient with chronic inflammation is at increased risk for which outcome?
A. Tissue repair and fibrosis
B. Immediate healing without scarring
C. Increased oxygen delivery
D. Reduced immune activity
Correct Answer: A. Tissue repair and fibrosis
Rationale: Chronic inflammation often results in tissue destruction and repair processes leading
to fibrosis and scarring.
7. Which white blood cell is primarily responsible for fighting bacterial infections?
A. Eosinophil
B. Basophil
, C. Monocyte
D. Neutrophil
Correct Answer: D. Neutrophil
Rationale: Neutrophils are the body's primary defense against bacterial infections and are
typically elevated during acute bacterial illnesses.
8. A patient develops a fever during an infection. Which substance is most directly
responsible for resetting the hypothalamic temperature set point?
A. Histamine
B. Prostaglandins
C. Albumin
D. Insulin
Correct Answer: B. Prostaglandins
Rationale: Pyrogens stimulate prostaglandin production, which raises the hypothalamic
temperature set point and causes fever.
9. Which statement best describes apoptosis?
A. Uncontrolled cellular swelling and rupture
B. Programmed cell death
C. Rapid bacterial growth
D. Excessive scar formation
Correct Answer: B. Programmed cell death
Rationale: Apoptosis is a regulated process that eliminates damaged or unnecessary cells
without triggering significant inflammation.
10. A patient with severe dehydration is expected to demonstrate which laboratory finding?
A. Decreased serum osmolality
B. Increased serum osmolality
C. Decreased hematocrit
D. Increased albumin loss
Correct Answer: B. Increased serum osmolality
Rationale: Water loss concentrates serum solutes, resulting in increased osmolality.
11. Which immune cell produces antibodies?
EXAM (PRACTICE TEST & STUDY GUIDE) | 2026–2027
EXAM PREP | DETAILED RATIONALES | PRACTICE
QUESTIONS | CERTIFICATION PREPARATION
1. A nurse is teaching a patient about cellular adaptation. Which process occurs when cells
increase in size due to increased workload?
A. Hyperplasia
B. Metaplasia
C. Hypertrophy
D. Dysplasia
Correct Answer: C. Hypertrophy
Rationale: Hypertrophy is an increase in cell size that results in enlargement of an organ or
tissue. Hyperplasia refers to an increase in cell number, metaplasia is replacement of one
mature cell type with another, and dysplasia involves abnormal cellular growth.
2. A patient experiences tissue injury after prolonged interruption of blood flow. What is
the most likely cause of this cellular damage?
A. Ischemia
B. Hyperplasia
C. Metastasis
D. Fibrosis
Correct Answer: A. Ischemia
Rationale: Ischemia results from inadequate blood supply and oxygen delivery to tissues, leading
to cellular injury. The other options are not primary causes of acute cellular damage due to
reduced perfusion.
3. Which electrolyte imbalance is most commonly associated with cardiac dysrhythmias?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hypermagnesemia
Correct Answer: B. Hypokalemia
,Rationale: Potassium plays a critical role in cardiac conduction. Low potassium levels can lead
to dangerous arrhythmias. Sodium, calcium, and magnesium abnormalities may also affect the
heart but are less commonly implicated than hypokalemia.
4. A patient develops edema following severe hypoalbuminemia. What is the primary
mechanism responsible?
A. Increased hydrostatic pressure
B. Increased lymphatic drainage
C. Reduced plasma oncotic pressure
D. Increased red blood cell production
Correct Answer: C. Reduced plasma oncotic pressure
Rationale: Albumin helps maintain oncotic pressure that keeps fluid within blood vessels. Low
albumin allows fluid to shift into interstitial spaces, causing edema.
5. Which type of necrosis is most commonly associated with myocardial infarction?
A. Liquefactive necrosis
B. Caseous necrosis
C. Fat necrosis
D. Coagulative necrosis
Correct Answer: D. Coagulative necrosis
Rationale: Coagulative necrosis occurs in ischemic injury of solid organs such as the heart and
kidneys. Liquefactive necrosis is more common in brain infarctions and abscesses.
6. A patient with chronic inflammation is at increased risk for which outcome?
A. Tissue repair and fibrosis
B. Immediate healing without scarring
C. Increased oxygen delivery
D. Reduced immune activity
Correct Answer: A. Tissue repair and fibrosis
Rationale: Chronic inflammation often results in tissue destruction and repair processes leading
to fibrosis and scarring.
7. Which white blood cell is primarily responsible for fighting bacterial infections?
A. Eosinophil
B. Basophil
, C. Monocyte
D. Neutrophil
Correct Answer: D. Neutrophil
Rationale: Neutrophils are the body's primary defense against bacterial infections and are
typically elevated during acute bacterial illnesses.
8. A patient develops a fever during an infection. Which substance is most directly
responsible for resetting the hypothalamic temperature set point?
A. Histamine
B. Prostaglandins
C. Albumin
D. Insulin
Correct Answer: B. Prostaglandins
Rationale: Pyrogens stimulate prostaglandin production, which raises the hypothalamic
temperature set point and causes fever.
9. Which statement best describes apoptosis?
A. Uncontrolled cellular swelling and rupture
B. Programmed cell death
C. Rapid bacterial growth
D. Excessive scar formation
Correct Answer: B. Programmed cell death
Rationale: Apoptosis is a regulated process that eliminates damaged or unnecessary cells
without triggering significant inflammation.
10. A patient with severe dehydration is expected to demonstrate which laboratory finding?
A. Decreased serum osmolality
B. Increased serum osmolality
C. Decreased hematocrit
D. Increased albumin loss
Correct Answer: B. Increased serum osmolality
Rationale: Water loss concentrates serum solutes, resulting in increased osmolality.
11. Which immune cell produces antibodies?
