,NSG5003/NSG 5003 Advanced Pathophysiology Week 9
Knowledge Checks | South University | 26/27 (PDF)
1. Cheyne-Stokes respirations are characterized by which breathing pattern?
A) Sustained deep, rapid breathing without pauses
B) Irregular, shallow breathing with intermittent gasps
C) Crescendo-decrescendo pattern of breathing followed by apnea
D) Prolonged expiratory phase with wheezing
Correct Answer: Crescendo-decrescendo pattern of breathing followed by apnea
Rationale: Cheyne-Stokes respirations involve a cyclical pattern of gradually increasing then
decreasing tidal volume, followed by a period of apnea. This pattern results from delayed feedback to
the respiratory centers and is seen in heart failure and neurological damage. The other options
describe Kussmaul, Biot, and obstructive breathing patterns, respectively.
2. Vomiting associated with central nervous system injuries compresses which anatomic location?
A) Vestibular nuclei in the lower brainstem
B) Hypothalamic thermoregulatory center
C) Frontal lobe motor cortex
D) Cerebellar vermis
Correct Answer: Vestibular nuclei in the lower brainstem
Rationale: The vomiting center is located in the medulla, and compression of the vestibular nuclei in
the lower brainstem by CNS lesions triggers nausea and vomiting. The hypothalamus regulates
temperature, the frontal lobe controls motor function, and the cerebellar vermis coordinates
movement. Recognizing this location guides neurological assessment.
3. A sudden, explosive, disorderly discharge of cerebral neurons is termed:
A) Seizure
,B) Syncope
C) Delirium
D) Coma
Correct Answer: Seizure
Rationale: A seizure is defined as a sudden, explosive, disorderly discharge of cerebral neurons,
causing alterations in consciousness, motor activity, sensation, or behavior. Syncope is fainting due to
reduced cerebral perfusion, delirium is an acute confusional state, and coma is a prolonged state of
unconsciousness. Understanding this definition is fundamental to epilepsy care.
4. Status epilepticus is considered a medical emergency because of the:
A) Risk of aspiration pneumonia
B) Development of cerebral hypoxia
C) Potential for spinal cord injury
D) Onset of hypertensive crisis
Correct Answer: Development of cerebral hypoxia
Rationale: Status epilepticus is a continuous seizure lasting more than 5 minutes or recurrent seizures
without recovery between them, leading to cerebral hypoxia from increased metabolic demand and
impaired ventilation. Aspiration, spinal injury, and hypertension are complications but not the
primary emergency. Prompt treatment is essential to prevent permanent brain damage.
5. Diffuse axonal injuries of the brain often result in:
A) Focal neurological deficits
B) Reduced levels of consciousness
C) Isolated memory loss
D) Peripheral neuropathy
Correct Answer: Reduced levels of consciousness
, Rationale: Diffuse axonal injury involves widespread shearing of white matter tracts, leading to
prolonged unconsciousness and poor neurological outcomes. Focal deficits suggest localized lesions,
isolated memory loss suggests hippocampal injury, and peripheral neuropathy affects peripheral
nerves. Recognizing this pattern guides prognosis.
6. Which term describes the complication from a spinal cord injury above T6 producing paroxysmal
hypertension, piloerection, and sweating above the lesion?
A) Spinal shock
B) Autonomic hyperreflexia
C) Neurogenic shock
D) Orthostatic hypotension
Correct Answer: Autonomic hyperreflexia
Rationale: Autonomic hyperreflexia is a life-threatening complication of spinal cord injury above T6,
triggered by noxious stimuli below the lesion, causing massive sympathetic discharge with
hypertension, bradycardia, and sweating above the lesion. Spinal shock is acute loss of reflexes,
neurogenic shock is loss of sympathetic tone, and orthostatic hypotension is positional. Immediate
intervention is required.
7. Which assessment finding marks the end of spinal shock?
A) Return of bowel sounds
B) Gradual return of spinal reflexes
C) Improved respiratory effort
D) Resolution of bradycardia
Correct Answer: Gradual return of spinal reflexes
Rationale: Spinal shock is characterized by temporary loss of all spinal reflexes below the level of
injury. The return of reflexes, particularly the bulbocavernosus and anal reflexes, marks the resolution
of spinal shock. Bowel sounds, respiratory effort, and heart rate changes are not definitive markers.
Recognizing this transition guides rehabilitation planning.
Knowledge Checks | South University | 26/27 (PDF)
1. Cheyne-Stokes respirations are characterized by which breathing pattern?
A) Sustained deep, rapid breathing without pauses
B) Irregular, shallow breathing with intermittent gasps
C) Crescendo-decrescendo pattern of breathing followed by apnea
D) Prolonged expiratory phase with wheezing
Correct Answer: Crescendo-decrescendo pattern of breathing followed by apnea
Rationale: Cheyne-Stokes respirations involve a cyclical pattern of gradually increasing then
decreasing tidal volume, followed by a period of apnea. This pattern results from delayed feedback to
the respiratory centers and is seen in heart failure and neurological damage. The other options
describe Kussmaul, Biot, and obstructive breathing patterns, respectively.
2. Vomiting associated with central nervous system injuries compresses which anatomic location?
A) Vestibular nuclei in the lower brainstem
B) Hypothalamic thermoregulatory center
C) Frontal lobe motor cortex
D) Cerebellar vermis
Correct Answer: Vestibular nuclei in the lower brainstem
Rationale: The vomiting center is located in the medulla, and compression of the vestibular nuclei in
the lower brainstem by CNS lesions triggers nausea and vomiting. The hypothalamus regulates
temperature, the frontal lobe controls motor function, and the cerebellar vermis coordinates
movement. Recognizing this location guides neurological assessment.
3. A sudden, explosive, disorderly discharge of cerebral neurons is termed:
A) Seizure
,B) Syncope
C) Delirium
D) Coma
Correct Answer: Seizure
Rationale: A seizure is defined as a sudden, explosive, disorderly discharge of cerebral neurons,
causing alterations in consciousness, motor activity, sensation, or behavior. Syncope is fainting due to
reduced cerebral perfusion, delirium is an acute confusional state, and coma is a prolonged state of
unconsciousness. Understanding this definition is fundamental to epilepsy care.
4. Status epilepticus is considered a medical emergency because of the:
A) Risk of aspiration pneumonia
B) Development of cerebral hypoxia
C) Potential for spinal cord injury
D) Onset of hypertensive crisis
Correct Answer: Development of cerebral hypoxia
Rationale: Status epilepticus is a continuous seizure lasting more than 5 minutes or recurrent seizures
without recovery between them, leading to cerebral hypoxia from increased metabolic demand and
impaired ventilation. Aspiration, spinal injury, and hypertension are complications but not the
primary emergency. Prompt treatment is essential to prevent permanent brain damage.
5. Diffuse axonal injuries of the brain often result in:
A) Focal neurological deficits
B) Reduced levels of consciousness
C) Isolated memory loss
D) Peripheral neuropathy
Correct Answer: Reduced levels of consciousness
, Rationale: Diffuse axonal injury involves widespread shearing of white matter tracts, leading to
prolonged unconsciousness and poor neurological outcomes. Focal deficits suggest localized lesions,
isolated memory loss suggests hippocampal injury, and peripheral neuropathy affects peripheral
nerves. Recognizing this pattern guides prognosis.
6. Which term describes the complication from a spinal cord injury above T6 producing paroxysmal
hypertension, piloerection, and sweating above the lesion?
A) Spinal shock
B) Autonomic hyperreflexia
C) Neurogenic shock
D) Orthostatic hypotension
Correct Answer: Autonomic hyperreflexia
Rationale: Autonomic hyperreflexia is a life-threatening complication of spinal cord injury above T6,
triggered by noxious stimuli below the lesion, causing massive sympathetic discharge with
hypertension, bradycardia, and sweating above the lesion. Spinal shock is acute loss of reflexes,
neurogenic shock is loss of sympathetic tone, and orthostatic hypotension is positional. Immediate
intervention is required.
7. Which assessment finding marks the end of spinal shock?
A) Return of bowel sounds
B) Gradual return of spinal reflexes
C) Improved respiratory effort
D) Resolution of bradycardia
Correct Answer: Gradual return of spinal reflexes
Rationale: Spinal shock is characterized by temporary loss of all spinal reflexes below the level of
injury. The return of reflexes, particularly the bulbocavernosus and anal reflexes, marks the resolution
of spinal shock. Bowel sounds, respiratory effort, and heart rate changes are not definitive markers.
Recognizing this transition guides rehabilitation planning.
