ch35 neuro ch 41 iggy Flashcards
During a client’s neurologic assessment, the nurse finds that he is arousable after light touch combined
with a loud voice. How does the nurse document this client’s level of consciousness?
A. “Stuporous”
B. “Lethargic”
C. “Comatose”
D. “Drowsy”
Answer: B
Rationale: Coma means unarousable, and alert is a normal response. Drowsy generally indicates arousal
by voice. Lethargy indicates that voice and light touch are used to obtain a client response. Stuporous is a
deeper level of unresponsiveness that responds to more vigorous touch or tactile stimulation. Comatose
indicates no response to painful or noxious stimuli.
A client with possible Parkinson’s disease is scheduled to have magnetic resonance imaging (MRI). The
daughter asks the nurse how this test is different from a computed tomography (CT) scan. What is the
nurse’s best response?
A. “The MRI scan provides better contrast between normal tissue and pathologic tissue.”
B. “They are not different; both use ionizing radiation.”
C. “The MRI will not require contrast material.”
D. “The CT scan does not provide a view of deep brain structures like the region where Parkinson’s
originates.
Answer: A
Rationale: MRI is based on how hydrogen atoms behave in a magnetic field. These atoms differ in normal
versus diseased tissue, providing better visualization of small or deep structures in the body. Although
both CT and MRI images can be enhanced with contrast material and both provide views of deep brain
structures, only CT uses ionizing radiation.
The nurse is caring for a client with a glioma. Which part of the brain is affected in this client?
- Cerebrum
- Meninges
- Pituitary lobe
- Cranial Nerve XIII
1
Option 1:
Gliomas generally originate in the cerebrum. The glia provides the physical structure of the brain and supports endothelial cells of the blood–brain barrier.
Option 2:
Meningiomas arise from the meninges or layers of the brain. They are space-occupying lesions that can cause devastating damage based on size and location.
Option 3:
Pituitary tumors are generally found in the anterior lobe of the pituitary.
Option 4:
Acoustic neuromas or Schwannomas originate from the protective covering around nerve fibers of Cranial Nerve XIII.
A client is diagnosed with a tumor in the left inferior frontal lobe (Broca’s Area). Which symptom is the client likely to exhibit?
- Loss of vision in one eye
- Loss of upward gaze
- Motor weakness
- Difficulty with speech
4
Option 1:
A tumor affecting the optic nerve will result in the loss of vision in one eye.
Option 2:
The client will experience loss of upward gaze and light reflex when there is a tumor in the pineal gland.
Option 3:
A tumor located in the frontal motor cortex causes motor weakness.
Option 4:
The client with a tumor in the Broca’s Area has difficulty with speech.
Which is true of atonic seizures?
- The client experiences brief contracture of muscles or muscle groups.
- The client develops shallow breathing and periods of apnea.
- The client has rhythmic jerking of all extremities.
- The client may experience a severe fall to the ground with loss of consciousness.
4
Option 1:
The client experiences brief contracture of muscles or muscle groups during myoclonic seizures. The client does not lose consciousness.
Option 2:
Tonic-clonic seizures affect both the cerebral hemispheres. The client experiences shallow breathing and periods of apnea.
Option 3:
In a tonic-clonic seizure, the client experiences rigidity during the tonic phase and rhythmic jerking of all extremities during the clonic phase.
Option 4:
The client experiencing an atonic seizure has sudden momentary loss of motor tone. This client is at high-risk of injury. The client may have a head drop or a severe fall to the ground accompanied by a brief loss of consciousness.
The nurse observes a client experiencing a partial seizure. Which behavior does the nurse document as automatism?
- Unilateral, rhythmic muscle movements
- Rhythmic jerkiness of all extremities
- Repetitive unconscious movements
- Visualizations or hallucinations
3
Option 1:
A client experiencing partial seizure may have rhythmic muscle movements on one side of the body.
Option 2:
During a tonic-clonic seizure, the client experiences rhythmic jerkiness of all extremities in the clonic phase.
Option 3:
Automatism involves repetitive unconscious movements such as lip smacking, chewing, or swallowing.
Option 4:
Seizures can be preceded by a preictal phase during which the client may experience auras. Auras include visualizations or hallucinations.
What is a likely cause of viral meningitis?
- Lumbar puncture
- Intraventricular catheter
- Traumatic injury
- Lack of immunization against mumps
4
Option 1:
Bacteria responsible for meningitis may enter the body secondary to a lumbar puncture. This can lead to acute meningitis with the presence of symptoms occurring in hours to days.
Option 2:
A client may develop bacterial meningitis secondary to the use of monitoring devices such as intraventricular catheter.
Option 3:
Direct inoculation of the organisms responsible for bacterial or fungal meningitis may occur secondary to traumatic injury.
Option 4:
Viral meningitis may be caused by mumps and measles. In populations not immunized against mumps, 30% of those who contract mumps develop meningitis.
Question 6. Which surgical procedure is used to treat the client with Parkinson’s disease (PD)?
- Vagal nerve stimulator (VNS)
- Stereotactic pallidotomy
- Deep brain stimulation
- Partial corpus callosectomy
2
Option 1:
VNS works like a cardiac pace maker. It is used to stimulate the vagus nerve (10th Cranial Nerve) to effectively control seizure activity.
Option 2:
Stereotactic pallidotomy involves the opening of the pallidum within the corpus striatum. A cylindrical rod or electrode is implanted allowing the targeted area to receive mild electrical stimulation to reduce tremors and the rigidity associated with PD.
Option 3:
Deep brain stimulation is used to treat uncontrolled seizure activity. Electrodes are placed in deep brain structures and programmed to activate when a seizure activity is sensed.
Option 4:
Partial corpus callosectomy is utilized for clients with intractable tonic-clonic or atonic seizures. The procedure involves a craniotomy, and the connection between the right and left hemispheres of the brain is either disrupted or partially or totally severed.
Which part of the cerebrum is the primary regulator of the autonomic nervous system?
- Thalamus
- Basal ganglia
- Hypothalamus
- Limbic system
3
Option 1:
The thalamus is the center for sensory impulses to the cerebral cortex and also helps regulate motor functions.
Option 2:
The basal ganglia coordinate with the cerebellum and regulate impulse movement back and forth through the thalamus to the cerebral cortex.
Option 3:
The hypothalamus is the main regulator for the autonomic nervous system, which regulates heart rate and blood pressure by sending signals to the brain stem.
Option 4:
The limbic system is the primary center for memory and emotions.
Which are primary functions of the limbic system? Select all that apply.
- Regulating memory
- Maintaining equilibrium
- Regulating pain and senses
- Regulating the feelings of pleasure and grief
- Regulating food and water intake
1, 4
Option 1:
The limbic system consists of the cingulate gyrus, the hippocampus, and the amygdala, which play a primary role in regulating the memory.
Option 2:
The thalamus regulates motor control that maintains equilibrium.
Option 3:
The thalamus is the center for sensory impulses that regulate pain and senses, such as hearing, touch, smell, and vision.
Option 4:
The limbic system of the cerebrum has a center for gratification and aversion that controls emotions, such as pleasure and grief.
Option 5:
The hypothalamus is a regulator of the autonomic nervous system that maintains food and water intake control.
The nurse notes a client with Parkinson’s disease has uncoordinated body movements. Which brain system coordination failure is responsible for the client’s condition?
- Basal ganglia and cerebellum
- Thalamus and cerebral cortex
- Limbic system and aversion center
- Hypothalamus and anterior pituitary gland
1
Option 1:
The basal ganglia in coordination with the cerebellum regulate body movements. A client with Parkinson’s disease may have uncoordinated body movements due to the failure of both of these operating systems.
Option 2:
The thalamus, along with the cerebral cortex, regulates sensory impulses, such as pain, temperature, taste, smell, hearing, equilibrium, vision, and touch.
Option 3:
The coordination between the limbic system and the aversion center produces objectionable feelings, such as grief and dread.
Option 4:
The hypothalamus, along with the anterior pituitary gland, controls the secretion of hormones that regulate metabolism, reproduction, growth, and stress.
Which cranial nerve originating from the medulla oblongata is the vagus nerve?
- XII
- XI
- X
- IX
3
Option 1:
Cranial nerve XII, which originates from the medulla oblongata, is the hypoglossal nerve.
Option 2:
Cranial nerve XI, which originates from the medulla oblongata, is the spinal accessory.
Option 3:
Cranial nerve X, which originates from the medulla oblongata, is the vagus nerve.
Option 4:
Cranial nerve IX, which originates from the medulla oblongata, is the glossopharyngeal nerve.
Which originates in the pons as cranial nerve VI?
- Facial nerve
- Acoustic nerve
- Abducens nerve
- Trigeminal nerve
3
Option 1:
Cranial nerve VII, originating from the pons, is the facial nerve.
Option 2:
Cranial nerve VIII, originating from the pons, is the acoustic nerve.
Option 3:
Cranial nerve VI, originating from the pons, is the abducens nerve.
Option 4:
Cranial nerve V, originating from the pons, is the trigeminal nerve.
Which is associated with Cushing’s triad? Select all that apply.
- Decreased heart rate
- Increased urinary output
- Irregular respiratory rate
- Increased systolic blood pressure
- Increased serum sodium concentration
1, 3, 4
Option 1:
Cushing’s triad is a physiological nervous system response to increased intracranial pressure, which includes a decreased heart rate.
Option 2:
Increased urinary output may compromise cerebral perfusion pressure.
Option 3:
Cushing’s triad includes an irregular respiratory rate.
Option 4:
Cushing’s triad includes increased systolic blood pressure.
Option 5:
Increased serum sodium concentration greater than 145 milliequivalents/liter is not included in Cushing’s triad.
Which is a first-line medication used in the immediate treatment of seizures and status epilepticus? Select all that apply.
- Propofol
- Phenytoin
- Lorazepam
- Midazolam
- Levetiracetam
3, 4
Option 1:
Propofol is used in high doses to treat the refractory seizure.
Option 2:
A loading dose of phenytoin is given around the clock to stabilize the client with seizures.
Option 3:
Lorazepam is a benzodiazepine that is used as a first-line medication in the treatment of seizures and status epilepticus.
Option 4:
Midazolam is a benzodiazepine that is used as a first-line medication in the treatment of seizures and status epilepticus.
Option 5:
A loading dose of levetiracetam is given around the clock to stabilize the client with seizures.