Walden University NURS 6501 Exam 8 (docx) |
2026/2027 | Neurological Pathophysiology Q&A |
Nursing
1. An abrupt left middle cerebral artery occlusion causes right facial weakness and aphasia. Which mechanism
produces the initial neuronal injury?
A) Failure of ATP-dependent ion pumps from interrupted oxygen and glucose delivery
B) Primary loss of peripheral myelin
C) Excess dopamine synthesis
D) Autoimmune destruction of acetylcholine receptors
Correct Answer: Failure of ATP-dependent ion pumps from interrupted oxygen and glucose delivery
Rationale: Ischemia rapidly depletes ATP, impairing sodium-potassium pumps and causing cytotoxic edema
and excitotoxicity. The other options describe different neuroanatomic locations or disease mechanisms and do
not account for the specific pattern in the question. Distinguishing the affected structure and mechanism helps
connect the presenting findings to the underlying pathophysiology.
2. A person has transient unilateral weakness that resolves in 15 minutes without infarction. What
pathophysiologic event is most consistent?
A) Permanent spinal motor-neuron degeneration
B) Temporary focal cerebral ischemia
C) Progressive intracranial infection
D) Cerebellar demyelination
Correct Answer: Temporary focal cerebral ischemia
,Rationale: A transient ischemic attack produces reversible neurologic dysfunction from a short-lived
interruption of cerebral perfusion without acute infarction. The other options describe different neuroanatomic
locations or disease mechanisms and do not account for the specific pattern in the question. Distinguishing the
affected structure and mechanism helps connect the presenting findings to the underlying pathophysiology.
3. During acute ischemic stroke, the surrounding penumbra remains potentially salvageable because it has
what characteristic?
A) Completely normal neuronal metabolism
B) Total absence of collateral circulation
C) Reduced but residual perfusion sufficient to delay irreversible cell death
D) Established hemorrhagic necrosis
Correct Answer: Reduced but residual perfusion sufficient to delay irreversible cell death
Rationale: The penumbra receives inadequate flow for normal function but enough collateral perfusion to
postpone irreversible infarction. The other options describe different neuroanatomic locations or disease
mechanisms and do not account for the specific pattern in the question. Distinguishing the affected structure
and mechanism helps connect the presenting findings to the underlying pathophysiology.
4. Sudden severe headache with vomiting and nuchal rigidity suggests subarachnoid hemorrhage. What most
directly causes meningeal irritation?
A) Myelin loss in peripheral nerves
B) Dopamine depletion in the basal ganglia
C) Reduced acetylcholine at neuromuscular junctions
D) Blood entering the subarachnoid cerebrospinal fluid space
Correct Answer: Blood entering the subarachnoid cerebrospinal fluid space
,Rationale: Extravasated blood spreads through cerebrospinal fluid around the brain and irritates the meninges.
The other options describe different neuroanatomic locations or disease mechanisms and do not account for
the specific pattern in the question. Distinguishing the affected structure and mechanism helps connect the
presenting findings to the underlying pathophysiology.
5. An intracerebral hemorrhage expands rapidly. Which process explains worsening consciousness?
A) Increasing intracranial volume raises pressure and reduces cerebral perfusion
B) Immediate regeneration of injured axons
C) Reduced cerebrospinal fluid production alone
D) Isolated peripheral nerve ischemia
Correct Answer: Increasing intracranial volume raises pressure and reduces cerebral perfusion
Rationale: Expanding hematoma and edema increase intracranial pressure and may lower cerebral perfusion
pressure. The other options describe different neuroanatomic locations or disease mechanisms and do not
account for the specific pattern in the question. Distinguishing the affected structure and mechanism helps
connect the presenting findings to the underlying pathophysiology.
6. After head trauma, an initially lucid person deteriorates rapidly. Which lesion is classically associated with
this pattern?
A) Chronic peripheral neuropathy
B) Epidural hematoma from middle meningeal arterial injury
C) Multiple sclerosis plaque
D) Lumbar disk protrusion
Correct Answer: Epidural hematoma from middle meningeal arterial injury
, Rationale: An epidural arterial bleed can enlarge rapidly between skull and dura after a temporary lucid interval.
The other options describe different neuroanatomic locations or disease mechanisms and do not account for
the specific pattern in the question. Distinguishing the affected structure and mechanism helps connect the
presenting findings to the underlying pathophysiology.
7. A slowly progressive headache develops weeks after minor trauma in an older adult. Which bleeding source
commonly causes chronic subdural hematoma?
A) Ruptured middle meningeal artery
B) Choroid plexus hypersecretion
C) Torn bridging veins
D) Cerebral arterial vasospasm alone
Correct Answer: Torn bridging veins
Rationale: Bridging veins can tear with acceleration-deceleration injury, and slow venous bleeding may
accumulate over weeks. The other options describe different neuroanatomic locations or disease mechanisms
and do not account for the specific pattern in the question. Distinguishing the affected structure and
mechanism helps connect the presenting findings to the underlying pathophysiology.
8. Following severe traumatic brain injury, intracranial pressure rises while mean arterial pressure stays
constant. What happens to cerebral perfusion pressure?
A) It increases proportionally
B) It remains unchanged
C) It equals intracranial pressure
D) It decreases
Correct Answer: It decreases
2026/2027 | Neurological Pathophysiology Q&A |
Nursing
1. An abrupt left middle cerebral artery occlusion causes right facial weakness and aphasia. Which mechanism
produces the initial neuronal injury?
A) Failure of ATP-dependent ion pumps from interrupted oxygen and glucose delivery
B) Primary loss of peripheral myelin
C) Excess dopamine synthesis
D) Autoimmune destruction of acetylcholine receptors
Correct Answer: Failure of ATP-dependent ion pumps from interrupted oxygen and glucose delivery
Rationale: Ischemia rapidly depletes ATP, impairing sodium-potassium pumps and causing cytotoxic edema
and excitotoxicity. The other options describe different neuroanatomic locations or disease mechanisms and do
not account for the specific pattern in the question. Distinguishing the affected structure and mechanism helps
connect the presenting findings to the underlying pathophysiology.
2. A person has transient unilateral weakness that resolves in 15 minutes without infarction. What
pathophysiologic event is most consistent?
A) Permanent spinal motor-neuron degeneration
B) Temporary focal cerebral ischemia
C) Progressive intracranial infection
D) Cerebellar demyelination
Correct Answer: Temporary focal cerebral ischemia
,Rationale: A transient ischemic attack produces reversible neurologic dysfunction from a short-lived
interruption of cerebral perfusion without acute infarction. The other options describe different neuroanatomic
locations or disease mechanisms and do not account for the specific pattern in the question. Distinguishing the
affected structure and mechanism helps connect the presenting findings to the underlying pathophysiology.
3. During acute ischemic stroke, the surrounding penumbra remains potentially salvageable because it has
what characteristic?
A) Completely normal neuronal metabolism
B) Total absence of collateral circulation
C) Reduced but residual perfusion sufficient to delay irreversible cell death
D) Established hemorrhagic necrosis
Correct Answer: Reduced but residual perfusion sufficient to delay irreversible cell death
Rationale: The penumbra receives inadequate flow for normal function but enough collateral perfusion to
postpone irreversible infarction. The other options describe different neuroanatomic locations or disease
mechanisms and do not account for the specific pattern in the question. Distinguishing the affected structure
and mechanism helps connect the presenting findings to the underlying pathophysiology.
4. Sudden severe headache with vomiting and nuchal rigidity suggests subarachnoid hemorrhage. What most
directly causes meningeal irritation?
A) Myelin loss in peripheral nerves
B) Dopamine depletion in the basal ganglia
C) Reduced acetylcholine at neuromuscular junctions
D) Blood entering the subarachnoid cerebrospinal fluid space
Correct Answer: Blood entering the subarachnoid cerebrospinal fluid space
,Rationale: Extravasated blood spreads through cerebrospinal fluid around the brain and irritates the meninges.
The other options describe different neuroanatomic locations or disease mechanisms and do not account for
the specific pattern in the question. Distinguishing the affected structure and mechanism helps connect the
presenting findings to the underlying pathophysiology.
5. An intracerebral hemorrhage expands rapidly. Which process explains worsening consciousness?
A) Increasing intracranial volume raises pressure and reduces cerebral perfusion
B) Immediate regeneration of injured axons
C) Reduced cerebrospinal fluid production alone
D) Isolated peripheral nerve ischemia
Correct Answer: Increasing intracranial volume raises pressure and reduces cerebral perfusion
Rationale: Expanding hematoma and edema increase intracranial pressure and may lower cerebral perfusion
pressure. The other options describe different neuroanatomic locations or disease mechanisms and do not
account for the specific pattern in the question. Distinguishing the affected structure and mechanism helps
connect the presenting findings to the underlying pathophysiology.
6. After head trauma, an initially lucid person deteriorates rapidly. Which lesion is classically associated with
this pattern?
A) Chronic peripheral neuropathy
B) Epidural hematoma from middle meningeal arterial injury
C) Multiple sclerosis plaque
D) Lumbar disk protrusion
Correct Answer: Epidural hematoma from middle meningeal arterial injury
, Rationale: An epidural arterial bleed can enlarge rapidly between skull and dura after a temporary lucid interval.
The other options describe different neuroanatomic locations or disease mechanisms and do not account for
the specific pattern in the question. Distinguishing the affected structure and mechanism helps connect the
presenting findings to the underlying pathophysiology.
7. A slowly progressive headache develops weeks after minor trauma in an older adult. Which bleeding source
commonly causes chronic subdural hematoma?
A) Ruptured middle meningeal artery
B) Choroid plexus hypersecretion
C) Torn bridging veins
D) Cerebral arterial vasospasm alone
Correct Answer: Torn bridging veins
Rationale: Bridging veins can tear with acceleration-deceleration injury, and slow venous bleeding may
accumulate over weeks. The other options describe different neuroanatomic locations or disease mechanisms
and do not account for the specific pattern in the question. Distinguishing the affected structure and
mechanism helps connect the presenting findings to the underlying pathophysiology.
8. Following severe traumatic brain injury, intracranial pressure rises while mean arterial pressure stays
constant. What happens to cerebral perfusion pressure?
A) It increases proportionally
B) It remains unchanged
C) It equals intracranial pressure
D) It decreases
Correct Answer: It decreases
