HESI Advanced Pathophysiology Actual Exam Prep Study
Guide | Master Review Notes
Excel in your advanced clinical boards with this high-yield study
guide built for the HESI Advanced Pathophysiology actual exam.
This document delivers complete breakdowns of cellular
alterations, complex organ system failures, genetics, and
advanced disease etiologies. Packed with realistic practice
questions and explicit rationales, it is engineered to ensure you hit
your program benchmark on the very first try.
SECTION 1: CELLULAR & MOLECULAR PATHOPHYSIOLOGY
(Questions 1–100)
Question 1
A 62-year-old man with an acute LAD occlusion has viable myocardium 90
minutes after symptom onset. Which intracellular event is the earliest
reversible consequence of ischemia?
A) Rupture of lysosomal membranes
B) ATP depletion causing Na⁺/K⁺-ATPase pump failure and cellular swelling
C) Massive calcium influx through damaged sarcolemma
D) Nuclear DNA fragmentation
*Correct Answer: B) ATP depletion causing Na⁺/K⁺-ATPase pump
failure and cellular swelling *
Rationale: ATP depletion is the first biochemical consequence of hypoxia.
Failure of the energy-dependent Na⁺/K⁺ pump allows sodium and water to
,enter the cell, producing hydropic swelling—the earliest reversible change.
Lysosomal rupture and massive calcium influx are irreversible events .
Question 2
A surgeon evaluating ischemic bowel needs to determine whether injury
has become irreversible. Which microscopic finding confirms irreversibility?
A) Cytoplasmic blebbing and generalized swelling
B) Ribosomal dispersion from rough ER
C) Severe mitochondrial vacuolization with amorphous calcium densities
and membrane phospholipid loss
D) Nuclear chromatin clumping with glycogen depletion
*Correct Answer: C) Severe mitochondrial vacuolization with
amorphous calcium densities and membrane phospholipid loss *
Rationale: Irreversibility is defined by severe mitochondrial vacuolization with
calcium-phosphate densities plus widespread membrane phospholipid loss.
The resulting calcium influx activates phospholipases, proteases, and
endonucleases that destroy the cell .
Question 3
A 45-year-old smoker undergoes bronchoscopy showing replacement of
normal ciliated columnar epithelium with stratified squamous epithelium.
Which process has occurred?
A) Anaplasia
B) Hyperplasia
C) Metaplasia
D) Necrosis
,*Correct Answer: C) Metaplasia *
Rationale: Metaplasia is a reversible adaptive substitution of one mature cell
type for another better suited to tolerate chronic irritation. Smoking
commonly causes respiratory epithelium to transform into stratified
squamous epithelium .
Question 4
A 75-year-old woman develops lower-extremity weakness after prolonged
bed rest. What is the most likely cause?
A) Atrophy of leg muscles
B) Dysplasia of leg muscles
C) Hypertrophy of leg muscles
D) Hyperplasia of leg muscles
*Correct Answer: A) Atrophy of leg muscles *
Rationale: Atrophy is a decrease in cell size due to decreased workload or
disuse. Prolonged bed rest leads to skeletal muscle atrophy .
Question 5
Which cellular adaptation is most likely to occur from chronic ischemia?
A) Hypertrophy
B) Metaplasia
C) Atrophy
D) Hyperplasia
*Correct Answer: C) Atrophy *
, Rationale: Chronic ischemia reduces oxygen and nutrient delivery, causing
cells to shrink and decrease in function—an atrophic adaptation .
Question 6
What is the primary mechanism of cellular injury in a patient with a
myocardial infarction caused by a thrombus?
A) Free radical formation
B) Hypoxia leading to ATP depletion
C) Direct mechanical trauma
D) Osmotic lysis
*Correct Answer: B) Hypoxia leading to ATP depletion *
Rationale: Thrombotic occlusion causes ischemia and hypoxia. Impaired
oxidative phosphorylation depletes ATP, leading to pump failure and cellular
swelling .
Question 7
Which type of cellular adaptation occurs when cells increase in size in
response to increased workload?
A) Hyperplasia
B) Dysplasia
C) Hypertrophy
D) Metaplasia
*Correct Answer: C) Hypertrophy *
Rationale: Hypertrophy is an increase in cell size, commonly seen in skeletal
and cardiac muscle under increased demand. Left ventricular thickening in
chronic hypertension is an example .
Guide | Master Review Notes
Excel in your advanced clinical boards with this high-yield study
guide built for the HESI Advanced Pathophysiology actual exam.
This document delivers complete breakdowns of cellular
alterations, complex organ system failures, genetics, and
advanced disease etiologies. Packed with realistic practice
questions and explicit rationales, it is engineered to ensure you hit
your program benchmark on the very first try.
SECTION 1: CELLULAR & MOLECULAR PATHOPHYSIOLOGY
(Questions 1–100)
Question 1
A 62-year-old man with an acute LAD occlusion has viable myocardium 90
minutes after symptom onset. Which intracellular event is the earliest
reversible consequence of ischemia?
A) Rupture of lysosomal membranes
B) ATP depletion causing Na⁺/K⁺-ATPase pump failure and cellular swelling
C) Massive calcium influx through damaged sarcolemma
D) Nuclear DNA fragmentation
*Correct Answer: B) ATP depletion causing Na⁺/K⁺-ATPase pump
failure and cellular swelling *
Rationale: ATP depletion is the first biochemical consequence of hypoxia.
Failure of the energy-dependent Na⁺/K⁺ pump allows sodium and water to
,enter the cell, producing hydropic swelling—the earliest reversible change.
Lysosomal rupture and massive calcium influx are irreversible events .
Question 2
A surgeon evaluating ischemic bowel needs to determine whether injury
has become irreversible. Which microscopic finding confirms irreversibility?
A) Cytoplasmic blebbing and generalized swelling
B) Ribosomal dispersion from rough ER
C) Severe mitochondrial vacuolization with amorphous calcium densities
and membrane phospholipid loss
D) Nuclear chromatin clumping with glycogen depletion
*Correct Answer: C) Severe mitochondrial vacuolization with
amorphous calcium densities and membrane phospholipid loss *
Rationale: Irreversibility is defined by severe mitochondrial vacuolization with
calcium-phosphate densities plus widespread membrane phospholipid loss.
The resulting calcium influx activates phospholipases, proteases, and
endonucleases that destroy the cell .
Question 3
A 45-year-old smoker undergoes bronchoscopy showing replacement of
normal ciliated columnar epithelium with stratified squamous epithelium.
Which process has occurred?
A) Anaplasia
B) Hyperplasia
C) Metaplasia
D) Necrosis
,*Correct Answer: C) Metaplasia *
Rationale: Metaplasia is a reversible adaptive substitution of one mature cell
type for another better suited to tolerate chronic irritation. Smoking
commonly causes respiratory epithelium to transform into stratified
squamous epithelium .
Question 4
A 75-year-old woman develops lower-extremity weakness after prolonged
bed rest. What is the most likely cause?
A) Atrophy of leg muscles
B) Dysplasia of leg muscles
C) Hypertrophy of leg muscles
D) Hyperplasia of leg muscles
*Correct Answer: A) Atrophy of leg muscles *
Rationale: Atrophy is a decrease in cell size due to decreased workload or
disuse. Prolonged bed rest leads to skeletal muscle atrophy .
Question 5
Which cellular adaptation is most likely to occur from chronic ischemia?
A) Hypertrophy
B) Metaplasia
C) Atrophy
D) Hyperplasia
*Correct Answer: C) Atrophy *
, Rationale: Chronic ischemia reduces oxygen and nutrient delivery, causing
cells to shrink and decrease in function—an atrophic adaptation .
Question 6
What is the primary mechanism of cellular injury in a patient with a
myocardial infarction caused by a thrombus?
A) Free radical formation
B) Hypoxia leading to ATP depletion
C) Direct mechanical trauma
D) Osmotic lysis
*Correct Answer: B) Hypoxia leading to ATP depletion *
Rationale: Thrombotic occlusion causes ischemia and hypoxia. Impaired
oxidative phosphorylation depletes ATP, leading to pump failure and cellular
swelling .
Question 7
Which type of cellular adaptation occurs when cells increase in size in
response to increased workload?
A) Hyperplasia
B) Dysplasia
C) Hypertrophy
D) Metaplasia
*Correct Answer: C) Hypertrophy *
Rationale: Hypertrophy is an increase in cell size, commonly seen in skeletal
and cardiac muscle under increased demand. Left ventricular thickening in
chronic hypertension is an example .
