Neurological

Question 1

Cranial nerve
1. Olfactory- sensory- smell
2. Optic- sensory- vision
3. Oculomotor- motor- most eye movement
4. Trochlear- motor- moves eye to look at nose
5. Trigeminal- both- face sensation, mastication
6. Abducens- motor- abduct eyes
7. Facial- both- facial expression, taste
8. Vestibulocochlear - sensory- hearing balance
9. Glossopharyngeal- both- taste, gag reflex
10. Vegas – both- gag reflex, parasympathetic innervation
11. spinal accessory- motor- shoulder shrug
12. Hypoglossal- motor- swallowing speech

Question 2

0h, oh, oh , to , touch, and ,feel, very, good, velvet, such, heaven
some, say, marry, money, but, my, brother, says, big, brains matter ,more

Question 3

TRANSIENT ISCHEMIC ATTACK (TIA)
TIAs are periods of focal ischemic cerebral neurologic deficits lasting less than 24 hours without residual deficits. Almost 1/3 of people diagnosed with a CVA have a history of a TIA.

Etiology: Embolization is often a known cause. Cardiac embolic causes include, atrial fibrillation, mitral valve disease, infectious endocarditis, atrial myxoma, and thrombi complicating a myocardial infection. Atrial septal defects and patent foramen ovale allow emboli into the veins. In addition ulcerated plaques on major brain arteries can be a source of emboli. Ischemia also occurs in atherosclerosis, intracerebral hemorrhage, fibromuscular dysplasia, hypotension, and hematological disorders (i.e. sickle cell disease, polycythemia, hyperviscosity syndromes).

Question 4

TIA
Signs and symptoms-usually abrupt onset without warning and recover rapidly within a few minutes:

Altered vision-ipsilateral monocular blindness
Transient aphasia
Dysphagia
Parasthesias of contralateral arm, leg, or face
Sensory deficits
Dizziness
Nystagmus
Cognitive (confusion) or behavioral (dysarthria, weakness) abnormalities

Question 5

Classification of TIA

Carotid - Secondary to carotid stenosis

Aphasia, dysarthria, change in LOC, weakness, numbness
Vertebrobasilar-Due to reduced blood flow from the vertebral arteries

Vertigo, ataxia, dizziness, visual field deficits, weakness, confusion

Question 6

TIA
Laboratory and Diagnostic Findings

STAT CT scan when symptoms occur to identify possible cerebral hemorrhage or cerebral tumor
MRI brain is indicated to detect acute or subacute infarction. MRI is superior in detecting ischemic CVA
Carotid doppler to identify carotid stenosis
Echocardiogram to identify any cardiac emboli
Cerebral angiography is the gold standard for investigating integrity of the cervical or cerebral vasculature
Order CBC, fasting blood glucose, serum cholesterol, and homocysteine, EKG, Chest Xray

Question 7

TIA
Differential Diagnosis

Focal seizure
Migraine
Hypoglycemia

Question 8

ABCD2 Score for TIA

ABCD2 is used to assess for stroke risk after TIA or the recurrence of TIA. The score is optimized to predict the risk of stroke within 2 days after a TIA, but also predict stroke risk within 90 days.

Risk factors include:

1. age greater than 60 is 1 point
2. blood pressure systolic blood pressure greater than 140 or diastolic blood pressure greater than 90 is 1 point
3. clinical features of TIA- unilateral weakness with or without speech impairment is 2 point
   speech impairment without unilateral weakness is 1 point
   duration
   TIA duration greater than 60 minutes is 2 point
   TIA duration 10-59 minutes is 1 point
   diabetes is 1 point

A Score of 0-3 hospital observation may be unnecessary without another indication such as atrial fibrillation
a score of 4-5- hospital observation justified and most situation

a score of 6-7 hospital observation worthwhile

4 or higher is suggested to be the threshold for hospital admission.

Question 9

Parkinson Disease A neurodegenerative disorder, which is the result of insufficient amounts of dopamine in the body. Patients often have a resting tremor, rigidity, and a slowness when moving.

Etiology: Parkinson’s rarely occurs on familial basis. Most commonly it is idiopathic. It may result form a mutations of several genes specifically, the LRRK2 and PARK 1 genes. Exposure to toxins and CO2 may result in the diagnosis. Occurs slightly more often among men than women. Onset is usually between 45 and 65 years of age.

Question 10

SIGNS AND SYMPTOMS
1. Classic triad: resting tremor (commonly in the extremity), rigidity (arms, legs, neck stiffness with restricted range of motion), and Bradykinesia (slow movements in a deliberate manner)

2. Postural instability
3. Pull test- steps backward to recover from a slight tug form behind
4. Falls-develop later in the disease process
5. Gait: diminished arm swing, shuffling steps, bent forward posture, frozen gait (gets stuck while ambulating)
6. Depression
7. Dementia
8. Anxiety
9. Psychosis
10. Apathy
11. Sleep disturbance
12. Disinhibition
13. Urinary incontinence
14. Sexual dysfunction
15. Constipation
16. Orthostatic hypotension
17. Masked facial expression: immobile face, staring eyes with mouth slightly open
18. Dysphagia
19. Dysarthria
20. Increased saliva
21. Decreased blinking-
    Myerson’s sign: repetitive tapping over the bridge of nose induce a sustained blink response
22. Absent or decreased sense of smell….What cranial nerve controls smell??????–OLFACTORY

Question 11

Parkinson Disease LAb and diagnostic

There are no labs/diagnostic studies specific to Parkinson’s.
Diagnosis is based on history and physical exam findings.
CT scan and MRI are usually normal in Parkinson’s but may provide differential diagnosis
The Unified Parkinson’s Disease Rating Scale, provide a standard evaluation and measure of the disease and its progression.

Question 12

What cranial nerves are responsible for ptosis and decreased uvula movement

Answer 12

CN VII, facial
CN IX, hypoglossal - voice swallow, tongue movement
CN X, palate rise

Question 13

The treatment of acute MS flares, and a prevention of flares, include

Answer 13

Methyl prednisolone
Interferon
Glatiramer

Question 14

Multiple sclerosis common assessment findings include

Answer 14

Weakness and lower extremities urinary retention and Lhermitte sign

Question 15

Myasthenia gravis, common assessment findings include

Answer 15

Weakness starting in the facial muscles, proximal asymmetric, weakness, increase, fatigue, bulbar symptoms, diplopia, apoptosis, dysarthria, and dysphasia. No sensory changes.

Question 16

Myasthenia gravis causes

Answer 16

Auto immune disorder, resulting in the reduction of the number of acetylcholine receptor sites at the neuromuscular junction

Disorder of the immune system

Characterized by weakness that may fluctuate after prolonged muscle use

Weakness is typical worse after exercise and better after rest

Variable clinical course with remissions and exacerbations

Question 17

Multiple sclerosis cause

Answer 17

Auto immune disease marked by numbness weakness, loss of muscle, coordination, and problems with vision, speech, and bladder control

The bodies immune system attacks, Milan, a key substance that serves as a nerve insulator and helps in the transmission of nerve signals

Variable clinical course with remissions and exacerbations

Demyelinating disease of the central nervous system

An acquired immunemediated disease characterized by relapses and remission

Question 18

Myasthenia gravis incidence

Answer 18

Affects 2 to 5,000,000 people in the United States per year

Predominate age 20 to 40 years, but may occur at any age

Incidence peaks in the third decade for females in the fifth and six decades for male

Occurs more commonly in women

Question 19

Multiple sclerosis incidence

Answer 19

Greatest incidents in young adults, usually between 20 and 50 years of age

Most common in persons of western European descent, living in temperate zones particularly in northern Europeans, such as Scandinavian more prevalent in Caucasian

MS patients life expectancy decreases 5 to 7 years

Question 20

Myasthenia gravis signs and symptoms

Answer 20

A ptosis, diplopia, dysarthria, dysphasia, extremity weakness, fatigue, respiratory, difficulty, sensory modalities, and deep tendon reflexes are normal

Question 21

Multiple sclerosis signs and symptoms

Answer 21

Weakness, numbness, tingling, or an steadiness in a limb, may progressed all limbs
Spastic paraparesis
Diplopia, disk equilibrium, urinary urgency, or hesitancy, optic atrophy, nystagmus

Question 22

Myasthenia, gravis, labs and diagnostics

Answer 22

Antibodies to acetylcholine receptors, AchR – ab, are found in the serum in about 85% of patients

MuSK antibodies present in 50% of patients that test negative for AChR

Thyroid function test, I found to be higher with more prevalence of thyroid disease

Vitamin B-12 may be low

ANA and RA factors are present

LP is normal

Question 23

Multiple sclerosis, labs and diagnostics

Answer 23

Definitive diagnosis can never be based solely on laboratory findings
Mild lymphocytosis common
LP- Slightly elevated protein in CSF
Elevated CSF IgG
MRI of the brain

Question 24

Myasthenia gravis management

Answer 24

No specific protocol, neurology referral
Anti-cholinesterase drugs that block, the hydrolysis of acetylcholine and are used for symptomatic improvement. Such as pyridostigmine bromide
Immunosuppressants
Plasmapheresis
Ventilator support may be needed during a crisis

Question 25

Multiple sclerosis

Answer 25

No treatment to prevent progression of the disease, neurology referral Recovery from acute, relapses hasten by steroids Anti-spasmodic Interferon therapy Immunosuppressive therapy Plasmapheresis

Question 26

Myasthenic Crisis: respiratory failure, medical emergency that occurs in up to 20% of patients and requires intubation. The oropharyngeal and laryngeal muscles are weak resulting in airway obstruction. Worsening muscle weakness and diplopia are often seen prior to crisis. Patients with muscle-specific kinase (MuSK) antibody positive are more likely to go into crisis. Precipitating factors: infection, stress, withdrawal of cholinesterase inhibitors, rapid introduction increase or taper of steroids, exposure to drugs (Neuromuscular Blocking agents, antibiotics like Macrolides, Aminoglycosides, and Fluoroquinolones, cardiac agents like Beta Blockers, Calcium Channel Blockers, Procainamides, quinidine, iodine contrast, quinine, chemotherapy agents)

Question 27

Multiple Sclerosis Relapsing-remitting (RR-MS)- clear and defined episodes of relapses and recovery. There is an interval of months or years after initial episode before new symptoms develop. There is no clinical progression between relapse episodes. Secondary progressive (SP-MS)- usually initiates with RR-MS, followed by deterioration and progression of the disease. Patients usually do not return to baseline after relapsing episode Primary progressive (PP-MS)- continued disease progression from initial episode. Some plateaus and minor temporary improvement. Most common in patients >40.

Question 28

SEIZURES Definition: A transient disturbance of cerebral function secondary to abnormal electrical activity in the brain. Etiology Often unknown Metabolic disorders: acidosis, electrolyte imbalance, hypoglycemia, hypoxia, alcohol withdrawal CNS infection Head trauma Tumors, other lesions Vascular disease Alzheimer’s disease *Most common cause is noncompliance with medication for epilepsy*

Question 29

CLASSIFICATION OF SEIZURES Focal seizure without cognitive changes Consciousness preserved Jacksonian movements-convulsive jerking or parasthesias/tingling that spreads to different parts of the limb or body Toddy’s paralysis: localized paresis in the involved region lasting minutes to hours Sensory symptoms: flashing lights, simple hallucinations, alterations in taste, olfactory changes, paresthesias, buzzing Autonomic symptoms: abnormal epigastric symptoms, pallor, sweating, flushing, pupillary dilation, piloerection Speech arrest or vocalization Nausea May have an aura Psychic symptoms: déjà vu, dreamy states, fear, distortion of time perception Focal seizure with cognitive changes Most common seizure in epileptics Impairment in consciousness Automatisms: lip smacking, chewing, swallowing, sucking, picking at clothes May begin with a stare at the time consciousness is impaired Frequently begin with an aura

Question 30

Generalized seizures Typical absence seizure Sudden loss of consciousness (5-30 seconds), with eyes fluttering or muscle spasms, begins and ends quickly Common in children 6-14 Frequently occur several times a day, often when the patient is quietly sitting If the seizure occurs during conversation, the patient may miss a few words

Question 31

Generalized seizures Atypical absence seizure Longer loss of consciousness Motor signs Less responsive to anticonvulsants

Question 32

Generalized seizures Generalized tonic-clonic seizures Begins abruptly Loss of consciousness or fall will occur Respiratory arrest Tonic (muscle rigidity) then clonic (synchronous muscle jerks) contractions of the muscles of the extremities, torso, and head Urinary or bowel incontinence Lasts 2-5 minutes May bite tongue or lips Postictal state: deep sleep, headache, amnesia of events, muscle soreness, nausea, confusion

Question 33

Generalized seizures Status epilepticus - Series of seizures lasting longer than 5 minutes with the patient never returning to baseline between seizures Medical emergency, requires immediate intervention Most uncommon but most life threatening The longer the seizure last, the more difficult it is to control

Question 34

Seizures LABORATORY AND DIAGNOSTIC FINDINGS NP should obtain a thorough history from the patient and family or observers of the event 24 hour continuous EEG is used for diagnosis of epilepsy. It is the most important test in determining seizure classification. A normal EEG does not rule out a seizure. CT Scan or MRI performed for all new-onset seizures MRI preferred over CT scan to identify specific lesions Lumbar puncture to assess for infectious process after CT or MRI has been used to rule out mass CBC Glucose, liver and renal function test VDRL Chemistry to assess any electrolyte imbalance Magnesium and Calcium ANA ESR ABG Urinalysis, drug screen Serum prolactin rises 2-3 times above normal for about 1 hour after >75% of tonic-clonic seizures

Question 35

Seizures DIFFERENTIAL DIAGNOSIS Syncope Cardiac disease Brainstem ischemia Psychogenic nonepileptic seizure

Question 36

Seizures TREATMENT Supportive care Maintain open airway Protect patient from injury Administer O2 if needed Do not place anything in patient mouth IV NS EKG, monitor RR and BP Benzodiazepines: Valium Lorazepam Phenytoin Fosphenytoin Phenobarbital-if not responsive to phenytoin Barbiturate coma or general anesthesia with neuromuscular blockade Monitor serum drug levels (i.e. Dilantin level) Monitor liver function with valproic acid, carbamazepine, or felbate Monitor CBC with carbamazepine, ethosuximide, or felbate Medication dosages should be titrated to adequate serum levels If the patient is seizure free, monitor the patient not the levels Discontinuance of anti-epileptics should be gradual and never abruptly withdrawn Vagus nerve stimulation is used in conjunction with medication in patients with severe uncontrolled seizures. VAGAL NERVE STIMULATOR

Question 37

MENINGITIS Infection of the membranes of the pia mater (membrane surrounding the brain ) and arachnoid mater (above the Pia Mater) of the brain or spinal cord, caused by viral, bacterial, or fungal infections. Acute bacterial meningitis is a medical emergency. Meningitis should be a differential diagnosis in any patient with fever and neurologic symptoms, particularly if there is a history of recent infection. ETIOLOGY More than >80% of cases are caused by Streptococcus pneumonia, Hemophilus influenza, or Neisseria meningitides. Predisposing factors include mastoiditis, trauma, pneumonia, sinusitis, otitis media, and congenital malformations. SIGNS AND SYMPTOMS Fever (>101) Severe headache Nausea Vomiting Nuchal rigidity “stiff neck” with flexion Positive Kernig’s sign: Pain and spasm of the hamstring muscles Positive Brudzinski’s sign: Legs flex at both hips and knees in response to flexion of the head and neck to the chest. Seizures Photophobia Chills Myalgias Altered mental status Assess all cranial nerves and for Babinksi reflex

Question 38

Meningitis LABORATORY/DIAGNOSTIC FINDINGS Lumbar puncture should be completed ASAP CSF will be cloudy or xanthochromic (yellow in color) with Elevated pressure (>180 mmH2O), Elevated protein, Decreased glucose, Presence of WBCs CT scan of the head is indicated before LP Obtain blood and sputum cultures Assess CBC, Chemistry (electrolytes), Coagulation, liver/renal panel Chest and sinus films may be necessary to assess for infection HIV/AIDs testing

Question 39

Meningitis TREATMENT Control symptoms and maintain electrolyte balance Consult infectious disease Initiate antibiotic therapy ASAP (Vancomycin, Penicillin G, 3rd generation cephalosporin, fluoroquinolones)

Question 40

Why is bacterial meningitis a medical emergency? may result in death or brain damage . Rapid progression Why should the NP start antibiotics ASAP? Helps to reduce complications. give with steriods to help reduce rate of hearing loss or other complicaiton