HESI Pathophysiology Exam Newesst 2026/2027 Questions
and Correct Detailed Answers with Rationales Already Graded
A+
1. A patient is diagnosed with chronic anemia. The nurse understands that which
cellular adaptation is most likely occurring in response to low oxygen levels?
A) Hyperplasia
B) Hypertrophy
C) Atrophy
D) Metaplasia
Answer: A) Hyperplasia
Rationale: Hyperplasia is an increase in the number of cells in response to a
stimulus, such as chronic anemia. The bone marrow increases production of red
blood cells (erythropoiesis) to compensate for the decreased oxygen-carrying
capacity. This is an adaptive response to maintain tissue oxygenation.
Hypertrophy is an increase in cell size, atrophy is a decrease in cell size, and
metaplasia is the replacement of one cell type with another .
,2. A client with chronic gastroesophageal reflux disease (GERD) develops Barrett's
esophagus. The nurse recognizes this as which type of cellular adaptation?
A) Hyperplasia
B) Hypertrophy
C) Atrophy
D) Metaplasia
Answer: D) Metaplasia
Rationale: Barrett's esophagus is a classic example of metaplasia, where the
normal stratified squamous epithelium of the esophagus is replaced by columnar
epithelium similar to that of the stomach or intestine. This is an adaptive response
to chronic acid exposure but is considered a premalignant condition that
increases the risk of esophageal adenocarcinoma .
3. A nurse is teaching a patient about cellular injury. Which statement by the
patient indicates understanding of reversible cell injury?
A) "Once cells are injured, they can never recover."
B) "If the injury is mild, cells can return to normal function."
,C) "All injured cells will eventually die."
D) "Cellular injury always leads to cancer."
Answer: B) "If the injury is mild, cells can return to normal function."
Rationale: Reversible cell injury occurs when the injurious stimulus is mild or
short-lived. Cells can recover and return to normal function once the stimulus is
removed. If the injury is severe or prolonged, irreversible injury leads to cell death
(necrosis or apoptosis). Cellular injury does not always lead to cancer; cancer
results from specific genetic mutations .
4. A patient presents with a myocardial infarction. The nurse understands that the
cardiac muscle cells have undergone which type of cell death?
A) Apoptosis
B) Necrosis
C) Atrophy
D) Metaplasia
Answer: B) Necrosis
, Rationale: Myocardial infarction causes ischemic necrosis, which is
unprogrammed cell death due to severe, irreversible injury. Necrosis is
characterized by cellular swelling, rupture of cell membranes, and an
inflammatory response. Apoptosis is programmed cell death that is orderly and
does not trigger inflammation. Atrophy and metaplasia are not forms of cell death
.
5. A patient with prolonged hypoxia develops cellular swelling and accumulation
of fat in the liver. The nurse recognizes these as signs of:
A) Reversible cell injury
B) Irreversible cell injury
C) Cellular adaptation
D) Apoptosis
Answer: A) Reversible cell injury
Rationale: Cellular swelling and fatty changes are hallmarks of reversible cell
injury. In reversible injury, cells maintain their structural integrity and can recover
and Correct Detailed Answers with Rationales Already Graded
A+
1. A patient is diagnosed with chronic anemia. The nurse understands that which
cellular adaptation is most likely occurring in response to low oxygen levels?
A) Hyperplasia
B) Hypertrophy
C) Atrophy
D) Metaplasia
Answer: A) Hyperplasia
Rationale: Hyperplasia is an increase in the number of cells in response to a
stimulus, such as chronic anemia. The bone marrow increases production of red
blood cells (erythropoiesis) to compensate for the decreased oxygen-carrying
capacity. This is an adaptive response to maintain tissue oxygenation.
Hypertrophy is an increase in cell size, atrophy is a decrease in cell size, and
metaplasia is the replacement of one cell type with another .
,2. A client with chronic gastroesophageal reflux disease (GERD) develops Barrett's
esophagus. The nurse recognizes this as which type of cellular adaptation?
A) Hyperplasia
B) Hypertrophy
C) Atrophy
D) Metaplasia
Answer: D) Metaplasia
Rationale: Barrett's esophagus is a classic example of metaplasia, where the
normal stratified squamous epithelium of the esophagus is replaced by columnar
epithelium similar to that of the stomach or intestine. This is an adaptive response
to chronic acid exposure but is considered a premalignant condition that
increases the risk of esophageal adenocarcinoma .
3. A nurse is teaching a patient about cellular injury. Which statement by the
patient indicates understanding of reversible cell injury?
A) "Once cells are injured, they can never recover."
B) "If the injury is mild, cells can return to normal function."
,C) "All injured cells will eventually die."
D) "Cellular injury always leads to cancer."
Answer: B) "If the injury is mild, cells can return to normal function."
Rationale: Reversible cell injury occurs when the injurious stimulus is mild or
short-lived. Cells can recover and return to normal function once the stimulus is
removed. If the injury is severe or prolonged, irreversible injury leads to cell death
(necrosis or apoptosis). Cellular injury does not always lead to cancer; cancer
results from specific genetic mutations .
4. A patient presents with a myocardial infarction. The nurse understands that the
cardiac muscle cells have undergone which type of cell death?
A) Apoptosis
B) Necrosis
C) Atrophy
D) Metaplasia
Answer: B) Necrosis
, Rationale: Myocardial infarction causes ischemic necrosis, which is
unprogrammed cell death due to severe, irreversible injury. Necrosis is
characterized by cellular swelling, rupture of cell membranes, and an
inflammatory response. Apoptosis is programmed cell death that is orderly and
does not trigger inflammation. Atrophy and metaplasia are not forms of cell death
.
5. A patient with prolonged hypoxia develops cellular swelling and accumulation
of fat in the liver. The nurse recognizes these as signs of:
A) Reversible cell injury
B) Irreversible cell injury
C) Cellular adaptation
D) Apoptosis
Answer: A) Reversible cell injury
Rationale: Cellular swelling and fatty changes are hallmarks of reversible cell
injury. In reversible injury, cells maintain their structural integrity and can recover
