2026 Neurological Pathophysiology
Nursing Study Guide Practice Questions
Answer Explanations Stroke Seizures
Brain Disorders Neurological Changes
Clinical Review
SECTION 1: FOUNDATIONS OF NEUROLOGICAL
PATHOPHYSIOLOGY (Questions 1-20)
1. A nurse is assessing a patient with increased intracranial pressure (ICP).
Which of the following early signs should the nurse recognize as the most
sensitive indicator of neurological deterioration?
A) Decerebrate posturing
B) Change in level of consciousness
C) Fixed and dilated pupils
D) Cushing's triad
Answer: B) Change in level of consciousness
Rationale: A change in level of consciousness (LOC) is the earliest and most
sensitive indicator of increased ICP and neurological deterioration. While
decerebrate posturing, fixed pupils, and Cushing's triad (bradycardia, hypertension,
irregular respirations) are all signs of increased ICP, they occur later in the
progression. The nurse should monitor LOC using the Glasgow Coma Scale
frequently to detect subtle changes early.
,2. A patient is admitted with a suspected basilar skull fracture. Which clinical
manifestation should the nurse anticipate?
A) Battle's sign and raccoon eyes
B) Positive Babinski reflex
C) Decorticate posturing
D) Nuchal rigidity
Answer: A) Battle's sign and raccoon eyes
Rationale: Basilar skull fractures are characterized by Battle's sign (bruising
behind the ears) and raccoon eyes (periorbital ecchymosis). These occur due to
blood tracking from the fracture site. Other signs include CSF otorrhea (ear
drainage) and CSF rhinorrhea (nose drainage). A positive Babinski reflex is a
normal finding in infants but abnormal in adults, indicating upper motor neuron
damage. Decorticate posturing indicates severe brain damage. Nuchal rigidity is
associated with meningitis.
3. The nurse understands that the Monroe-Kellie hypothesis states which of
the following?
A) Cerebral blood flow remains constant regardless of systemic blood pressure
B) An increase in one intracranial component must be compensated by a decrease
in another
C) ICP is always equal to mean arterial pressure
D) Brain tissue has the ability to regenerate after injury
Answer: B) An increase in one intracranial component must be compensated
by a decrease in another
Rationale: The Monroe-Kellie hypothesis states that the cranial vault is a rigid
container with three components: brain tissue (80%), cerebrospinal fluid (10%),
and blood (10%). Because the skull cannot expand, an increase in volume of one
component must be compensated by a decrease in another to maintain normal ICP.
When compensation fails, ICP rises, leading to potential herniation.
,4. A nurse is caring for a patient with a Glasgow Coma Scale score of 8. What
is the most appropriate nursing action?
A) Document the finding and continue monitoring
B) Prepare for endotracheal intubation
C) Administer a bolus of IV fluids
D) Place the patient in Trendelenburg position
Answer: B) Prepare for endotracheal intubation
Rationale: A Glasgow Coma Scale (GCS) score of 8 or less indicates severe
neurological impairment and is the threshold for endotracheal intubation to protect
the airway. Patients with GCS ≤8 cannot adequately protect their airway and are at
high risk for aspiration. The nurse should prepare for intubation and mechanical
ventilation. Trendelenburg position is contraindicated in neurological patients as it
increases ICP.
5. Which of the following medications should the nurse anticipate
administering to a patient with increased ICP to reduce cerebral edema?
A) Mannitol
B) Heparin
C) Atropine
D) Epinephrine
Answer: A) Mannitol
Rationale: Mannitol is an osmotic diuretic used to reduce cerebral edema and
lower ICP. It works by creating an osmotic gradient that draws fluid from the brain
tissue into the intravascular space, which is then excreted by the kidneys. Heparin
is an anticoagulant and would be contraindicated. Atropine is an anticholinergic
used for bradycardia. Epinephrine is a vasopressor that would increase blood
pressure and potentially ICP.
, 6. A patient with a traumatic brain injury is exhibiting decorticate posturing.
The nurse should document this finding as indicating damage to which area of
the brain?
A) Brainstem
B) Cerebral cortex
C) Corticospinal tract
D) Cerebellum
Answer: C) Corticospinal tract
Rationale: Decorticate posturing (flexion of arms, extension of legs) indicates
damage to the corticospinal tract, which runs from the cerebral cortex to the spinal
cord. This is a less severe form of posturing than decerebrate (extension of both
arms and legs), which indicates brainstem damage. Decorticate posturing carries a
better prognosis than decerebrate posturing.
7. The nurse is monitoring a patient for Cushing's triad. Which set of vital
signs indicates this finding?
A) BP 180/60, HR 48, irregular respirations
B) BP 90/50, HR 120, shallow respirations
C) BP 120/80, HR 72, regular respirations
D) BP 160/100, HR 110, deep respirations
Answer: A) BP 180/60, HR 48, irregular respirations
Rationale: Cushing's triad is a late sign of increased ICP characterized by: 1)
systolic hypertension with widened pulse pressure, 2) bradycardia, and 3) irregular
respirations. This occurs as the brain attempts to maintain cerebral perfusion
pressure when ICP is critically elevated. The presence of Cushing's triad indicates
impending herniation and requires immediate intervention.
8. Which position is most appropriate for a patient with increased intracranial
pressure?
Nursing Study Guide Practice Questions
Answer Explanations Stroke Seizures
Brain Disorders Neurological Changes
Clinical Review
SECTION 1: FOUNDATIONS OF NEUROLOGICAL
PATHOPHYSIOLOGY (Questions 1-20)
1. A nurse is assessing a patient with increased intracranial pressure (ICP).
Which of the following early signs should the nurse recognize as the most
sensitive indicator of neurological deterioration?
A) Decerebrate posturing
B) Change in level of consciousness
C) Fixed and dilated pupils
D) Cushing's triad
Answer: B) Change in level of consciousness
Rationale: A change in level of consciousness (LOC) is the earliest and most
sensitive indicator of increased ICP and neurological deterioration. While
decerebrate posturing, fixed pupils, and Cushing's triad (bradycardia, hypertension,
irregular respirations) are all signs of increased ICP, they occur later in the
progression. The nurse should monitor LOC using the Glasgow Coma Scale
frequently to detect subtle changes early.
,2. A patient is admitted with a suspected basilar skull fracture. Which clinical
manifestation should the nurse anticipate?
A) Battle's sign and raccoon eyes
B) Positive Babinski reflex
C) Decorticate posturing
D) Nuchal rigidity
Answer: A) Battle's sign and raccoon eyes
Rationale: Basilar skull fractures are characterized by Battle's sign (bruising
behind the ears) and raccoon eyes (periorbital ecchymosis). These occur due to
blood tracking from the fracture site. Other signs include CSF otorrhea (ear
drainage) and CSF rhinorrhea (nose drainage). A positive Babinski reflex is a
normal finding in infants but abnormal in adults, indicating upper motor neuron
damage. Decorticate posturing indicates severe brain damage. Nuchal rigidity is
associated with meningitis.
3. The nurse understands that the Monroe-Kellie hypothesis states which of
the following?
A) Cerebral blood flow remains constant regardless of systemic blood pressure
B) An increase in one intracranial component must be compensated by a decrease
in another
C) ICP is always equal to mean arterial pressure
D) Brain tissue has the ability to regenerate after injury
Answer: B) An increase in one intracranial component must be compensated
by a decrease in another
Rationale: The Monroe-Kellie hypothesis states that the cranial vault is a rigid
container with three components: brain tissue (80%), cerebrospinal fluid (10%),
and blood (10%). Because the skull cannot expand, an increase in volume of one
component must be compensated by a decrease in another to maintain normal ICP.
When compensation fails, ICP rises, leading to potential herniation.
,4. A nurse is caring for a patient with a Glasgow Coma Scale score of 8. What
is the most appropriate nursing action?
A) Document the finding and continue monitoring
B) Prepare for endotracheal intubation
C) Administer a bolus of IV fluids
D) Place the patient in Trendelenburg position
Answer: B) Prepare for endotracheal intubation
Rationale: A Glasgow Coma Scale (GCS) score of 8 or less indicates severe
neurological impairment and is the threshold for endotracheal intubation to protect
the airway. Patients with GCS ≤8 cannot adequately protect their airway and are at
high risk for aspiration. The nurse should prepare for intubation and mechanical
ventilation. Trendelenburg position is contraindicated in neurological patients as it
increases ICP.
5. Which of the following medications should the nurse anticipate
administering to a patient with increased ICP to reduce cerebral edema?
A) Mannitol
B) Heparin
C) Atropine
D) Epinephrine
Answer: A) Mannitol
Rationale: Mannitol is an osmotic diuretic used to reduce cerebral edema and
lower ICP. It works by creating an osmotic gradient that draws fluid from the brain
tissue into the intravascular space, which is then excreted by the kidneys. Heparin
is an anticoagulant and would be contraindicated. Atropine is an anticholinergic
used for bradycardia. Epinephrine is a vasopressor that would increase blood
pressure and potentially ICP.
, 6. A patient with a traumatic brain injury is exhibiting decorticate posturing.
The nurse should document this finding as indicating damage to which area of
the brain?
A) Brainstem
B) Cerebral cortex
C) Corticospinal tract
D) Cerebellum
Answer: C) Corticospinal tract
Rationale: Decorticate posturing (flexion of arms, extension of legs) indicates
damage to the corticospinal tract, which runs from the cerebral cortex to the spinal
cord. This is a less severe form of posturing than decerebrate (extension of both
arms and legs), which indicates brainstem damage. Decorticate posturing carries a
better prognosis than decerebrate posturing.
7. The nurse is monitoring a patient for Cushing's triad. Which set of vital
signs indicates this finding?
A) BP 180/60, HR 48, irregular respirations
B) BP 90/50, HR 120, shallow respirations
C) BP 120/80, HR 72, regular respirations
D) BP 160/100, HR 110, deep respirations
Answer: A) BP 180/60, HR 48, irregular respirations
Rationale: Cushing's triad is a late sign of increased ICP characterized by: 1)
systolic hypertension with widened pulse pressure, 2) bradycardia, and 3) irregular
respirations. This occurs as the brain attempts to maintain cerebral perfusion
pressure when ICP is critically elevated. The presence of Cushing's triad indicates
impending herniation and requires immediate intervention.
8. Which position is most appropriate for a patient with increased intracranial
pressure?
