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STEP 2 CK FIRST AID > Neurology > Flashcards

Neurology Flashcards

1
Q

Flaccid paralysis

A

LMN injury = anterior horn cell destruction

seen in Polio and werdnig hoffman dz

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2
Q

What is the only area spared in an anterior spinal artery occlusion?

A

The Dorsal Columns

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3
Q

What areas are affected in B12 neuropathy and Friedricks atacia?

A

demyelination of dorsal columns, lateral corticospinal tracts, spinocerebellar tracts

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4
Q 
symptoms of strokes in territory:
MCA-
ACA-
PCA-
Basilar artery-
Basal ganglia lacunar-
TIA-
A

MCA- aphasia, contra neglect, paresis, and sensory loss in face and arm. GAZE TOWARDS THE LESION w/ homo hemi

ACA- Contra paresis and sensory loss in leg. Cognitive defects

PCA- homo hemi, memory deficits, dyslexia/alexia

Basilar artery- locked in syndrome, weakness/sensory deficits to ipsi face and contra body!

Basal ganglia lacunar- pure motor or sensory w/ ataxic hemiparesis

TIA-

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5
Q

Strokes

A

For strokes that just happened, do MRI first

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6
Q

Acute HA w/ CN III palsy and pupillary involvement?

A

Think berry aneurysm

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7
Q

Most likely occurance

A
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8
Q

Marfans, Ehlers Danlos, and ADPKD all associated with…

A

berry aneurysms

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9
Q

Cavernous hemangiomas associated with…

A

Intracerebral hemorrhage

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10
Q

What type of herniation?

Flexor/extensor posturing, small reactive pupils, cheyne-stokes respirations

A

downward transtentorial (central) herniation

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11
Q

Subdural hematoma is crescent shaped and does NOT cross midline

A

Epidural hematoma has luccid interval, is lens shaped and does NOT cross sutures

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12
Q

If a headache with acute ocular disease, what 2 things are on your diff?

A

Cluster vs Angle closure glaucoma. For ACG - look for a FIXED PUPIL!

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13
Q

What is the headache after an LP due to?

A

Intracranial hypotension

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14
Q

Tx for migraine headaches:

Ppx for migraine headaches:

A 
Tx = NSIADs -> triptans or metaclopramide
Ppx = gabapentin, topiramate, amitriptyline, BBs, CCBs
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15
Q

What protocol screening should you follow for pts who present with their FIRST cluster headache ever?

A

exclude Horners syndrome (carotid artery dissection, cavernous sinus infection

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16
Q

Tx for cluster headaches

PPx for cluster headaches

A 
Tx = high flow O2, DHE, octreotide/sumatriptan
PPx = prednisone, verapamil, lithium
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17
Q

Tx for cavernous sinus thrombosis (can present as headache)

A

Naf/Oxacillin + Ceftriaxone or cefepime

If anearobe (dental/sinus) use metronidazole

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18
Q

What hormone is elevated after epileptic seizures in postictal period?

A

Prolactin

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19
Q

Simple partial seizures

Complex partial seizures

A

Simple = motor and sensory features w/ hallucinations but is NOT ASSOCIATED WITH LOC

Complex = temporal lobe. b/l motor/sensory features (LIP SMACKING) w/ LOC

Be aware of postictal confusion or todd’s paralysis

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20
Q

Tx for an active seizing pt?

A

Benzos and Phenytoin

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21
Q

What to use in kids as a first line anticonvulsant?

A

Phenobarbital.

In adults can use phenytoin, oxcarb, carbamaz, phenobarb, or valproate

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22
Q

Teen w/ a family history of “seizures” stares out the window alot in class. Dx? Tx? Will he recover?

A

Petit Mal (Absence) seizures (EEG shows 3mg blah blah)
Ethosuximide or Valproate
Pts usually recover before adulthood

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23
Q

Pt w/PKU or tuberous sclerosis and a FAMILY HISTORY starts to have seizures at 6 months of birth where she jerks her head and trunk in 5-10s bursts. Mental retardation. Dx? Tx?

A

Infantile Spasms (West Syndrome)

(EEG while seizing shows hypsarrhythmia)

Tx = ACTH, prednisone, clonazepam

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24
Q

Kid w/ mental retardation has multiple seizures per day (lots of nocturnal ones.) Dx? What does the EEG look like?

A

Lennox-Gastaut Syndrome

Slow spike and wave complexes

Resistant to treatment :(

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25
What causes BPP Vertigo?
a dislodged otolith causing semicircular canal (posterior) disturbances Tx = Epley maneuver or will go away on its own
26
Labrynthitis vs Vestibular Neuritis?
Laby = auditory and aural symptoms (tinnitus, ear fullness) Vestibular Neuritis = No auditory or aural symptoms Tx = meclizine and corticosteroids
27
What strokes mimic labyrinthitis and vestibular neuritis?
``` Laby = AICA stroke (lateral pontine/cerebellar) VN = PICA stroke (lateral medullary/cerebellar) ```
28
Pts with MG who have a thymoma will have autoAbs towards what?
ACh receptors, but also probably antibodies against striated muscle (anti-MuSK Abs)
29
How does repetitive nerve stimulation differ in MG and LE syndromes?
MG - decremental response | LE - incremental response
30
What is the viral link that is believed to somehow cause MS?
T-cell mediated viral infections
31
What area of the CNS is affected in Guillain Barre? Tx?
THe myelin. It is an acute inflammatory demyelinating polyneuropathy It can cause arrhythmias as well. WORST THING WOULD BE RESP FAILURE Tx = plasmapheresis and IVIG. NO STEROIDS
32
What is the main cause of death for alzheimers pts?
Aspiration pneumonia
33
What is a key feature between alz dementia and pseudodementia?
alz dementia pts are NOT concerned about their symptoms and will be brought in by family members. Pseudodementia pts are concerned about their symptoms
34
``` What will imaging look like for: Alz dementia Vascular dementia Picks NPH CJD ```
Alz dementia = b/l temporoparietal hypometabolism Vascular dementia = old infarcts, white matter changes Picks = frontotemporal atrophy NPH = ventricular enlargement CJD = increased T2 and FLAIR in putamen and caudate. EEG shows pyramidal signs and periodic sharp waves
35
Tx for alz dementia?
Cholinesterase inhibitors (increase the ACh levels) = donepezil, rivastigmine, galantamine, tacrine
36
What does the gait look like in NPH?
"Magnetic" or "Glued to the floor."
37
What CSF labs are seen in CJD?
elevated CSF 14-3-3 and tau protein. Make Dx w/ brain bx
38
What genetic phenomena is seen in Huntingtons dz? What will imaging look like? Tx?
Anticipation (number of CAG repeats expands in subsequent generations leading to earlier expression and more severe dz.) CT/MRI shows caudate/putamen atrophy Tx = Reserpine or Tetrabenazine (decrease movement)
39
Adjectives to describe parkinson gait: Tx?
Slow, wide stance w/ short accelerated steps, no arm swing Festinating Hypokinetic Tx = levodopa/carbidopa (carb blocks peripheral conversion of levo (D precursor) to prevent side effects of levodopa (N/V) - Bromocriptine (D) - Selegiline (MAO-B blocker can be neuroprotective)
40
What are the most common primary brain tumors in adults? kids?
Glio Multiforme and Meningioma (the only brain tumor that is more common in women) kids = Astrocytoma, Medulloblastoma NOTE: 2* TUMORS FROM METZ ARE WAY MORE COMMON IN CNS THAN 1*
41
What type of tumor is a GBM?
It is a grade IV astrocytoma. Causes ring enhanced lesions on MRI
42
What type of cells spawns a meningioma?
Dura mater or arachnoid cells. Can leave a dural tail
43
What cells span an acoustic neuroma?
Schwann cells
44
What tissue spawns a medulloblastoma?
Neuroectodermal tissue. These are popular in kids and come from the 4th ventricle
45
What is the most common supracellular tumor in kids? Signs?
Craniopharyngioma. Calcification is common 2/3 adult tumors are supratentorial 1/3 kid tumors are supratentorial
46
NF1 vs NF2
Both are AD NF1 = Age 15; cafe au lait spots, neurofibromas, freckling axilla, OPTIC GLIOMAS, kyphoscoliosis NF2 = Age 20; B/l acoustic neuromas, some sort of neurofibroma, meningiomoa, gliomas...
47
Tuberous Sclerosis What 1 test do you want to do?
ash-leaf hypopigmentations on skin, mental retardation, seizures, RETINAL HAMARTOMAS, sebaceous adenomas (shaped like butterflies) and orange peel rash on lumbosacral area. Must evaluate for rhabdomyoma of heart. Also want to check the kidneys forangiomyolipoas
48
No resp drive = brain death
Resp drive but eyes closed and unconscious = coma resp drive, but eyes open, seemingly awake = PVS Resp drive w/ eye/lid control = Locked In Syndrome (caused by CPM, stem stroke, or advanced ALS
49
Artificial life support can be discontinued only after 2 physicians have declared the patient legally brain dead
yep
50
when does korsakoff's dementia occur?
Typically in the resolution phase of wernicke's syndrome that was treated too late/incorrectly
51
When does glaucoma occur?
When the natural flow of aqueous humor is disrupted and IOP is increased Open angle = flow through trabecula is messed up Closed angle = angle is too narrow to let fluid out of posterior chamber
52
WHAT medication should you avoid like crazy in pts with acute angle glaucoma? What tx instead?
Atropine or anything that will dilate the eye (this would cause a higher IOP and would be really bad tx = timolol, pilocarpine, apraclonidine
53
tx for open angle glaucoma?
BBs to decrease aqueous fluid | Pilocarpine to increase aqueous outflow
54
Signs of macular degeneration?
painless loss of central vision and distortion of straight lines.
55
Central retinal artery occlusion, Tx? | Central retinal vein occlusion, Tx?
CRA = painless unilateral blindness w/ cherry-red spot on the fovea and swelling. Tx = thrombolysis CRV = fast painless blindness w/ swollen optic disk w/ hemorrhages and cotton wool spots. Tx = photocoagulation
56
What area of the brain corresponds to a lacunar infarct? What would the symptoms be?
= basal ganglia (putamen, GP, thalamus, caudate) or Subcortical white matter (internal capsul, corona radiata) or Pons. They are small, due to HTN, and may not show on CT symptoms = unilateral motor impairment, NO SENSORY/CORTICAL DEFICITS, no visual field abnormalities
57
What would a stroke in the vertebrobasilar area look like?
This would affect the brainstem CROSSED syndrome (contra hemiplegia and ipsi CN involvement.)
58
Central Cord Syndrome
selective damage to the central portion of the anterior spinal cord - causes weakness in UE and can cause decreased pain/temp due to STT damage. This will happen due to HYPEREXTENSION in a pt who already has degenerative changes in the spinal cord
59
Anterior (Ventral) Cord Syndrome
b/l spastic motor paresis any area distal to the lesion usually due to occlusion of the anterior spinal artery
60
Posterior (Dorsal) Cord Syndrome
b/l loss of vibratory/proprioceptive sensation, may have URINARY RETENTION/INCONTINENCE. Often due to MS or vascular injury (vertebral artery dissection)
61
Gait where you flex the hip and knee and slap your foot on the ground =
Steppage gait Peroneal nerve injury
62
Wide based gait w/ instability and stomping of feet =
Slap gait Sensory Neuropathy

STEP 2 CK FIRST AID (15 decks)

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