Pretest Questions Flashcards

1
Q

Where do mycotic aneurysms occur?

A

Over cerebral convexities

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2
Q

What causes mycotic aneurysms?

A

Usually bacterial infections from drug use or HIV.

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3
Q

Do hematomas enhance with contrast?

A

No

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4
Q

Why is levatiracetam better to use than lamotrigine in acute management of seizures?

A

The dose of lamotrigine must be increased very slowly to prevent steven johnsons syndrome. Over weeks to months.

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5
Q

Amaurosis fugax and cause?

A

Transient monocular vision loss usually from extracranial carotid artery disease.

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6
Q

Why can’t phenytoin be infused rapidly IV? What to use instead?

A

Phenytoin infused IV above 50mg/min can cause cardiac arrhythmias or hypotension. Use fosphenytoin instead (can also be given IM).

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7
Q

Course of action if a patient has a first seizure?

A

Get a brain MRI to rule out a structural lesion.

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8
Q

Lenox Gastaut Syndrome

A

Mental retardation with multiple seizure types (usually 1-2 Hz spike and wave). Often with a history of infantile spasms.

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9
Q

What drug should be given to patients with a traumatic head injury?

A

Phenytoin to decrease the incidence of post traumatic seizures

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10
Q

Diffuse axonal injury

A

Shearing of axonal bundles at the grey white junction due to intense acceleration/deceleration injury.

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11
Q

Mesial temporal sclerosis and treatment?

A

Most common cause of complex partial seizures in adults. Can be seen on MRI. Can be treated with surgical resection of right anterior temporal lobe.

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12
Q

Jacksonian March

A

Focal motor seizure that spreads and can secondarily generalize causing LOC and tonic-clonic seizures. Face can be involved early due to proximity of face and thumb on the motor strip.

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13
Q

Myoclonic seizures

A

Usually happen upon awakening, with light, and with loud sounds. Seen in Benign Juvenile Myoclonic Epilepsy.

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14
Q

Epilepsia Partialis Continua

A

Focal motor seizure activity that persists (focal motor status epilepticus)

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15
Q

West Syndrome. Associated disease?

A

Generalized seizure disorder in infants with recurrent spasms. Can be associated with tuberous sclerosis (ash-leaf spots, cardiac rhabdomyomas, angiofibromas).

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16
Q

Triptans side effect

A

Vasospasm so don’t give to patients with CAD

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17
Q

Migraine abortive medications

A

Triptans, ergots, etc

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18
Q

Migrane preventative medications

A

Beta blockers, amytriptyline, nifedapine, topamax, valproate.

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19
Q

How to abort cluster headaches

A

100% O2, triptans, ergots

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20
Q

Trigeminal neuralgia can caused by? Associated disease?

A

Aneurysm of superior cerebellar artery can press on V. Can be associated with MS

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21
Q

Pseudotumor cerebri, cause?

A

Increased intracranial pressure causes headaches, optic disk atrophy (pallor), tinnitus. Vit A overdose, idiopathic in obese women

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22
Q

How to treat pseudotumor cerebri? Diagnose?

A

Acetazolamide, VP shunts. Opening pressure >250 mm H2O.

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23
Q

Classic vs common migraine?

A

Classic has aura

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24
Q

Basilar Migraine

A

Women>Men, visual changes for 10-30 mins, then headache. Can cause coma, psychosis, transient quadriplegia.

Essentially just a migraine with super intense consequences.

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25
Q

Atypical facial pain

A

Constant throbbing unilateral pain that can be treated with antidepressants.

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26
Q

Intracranial Hypotension

A

Headaches that occur on standing after a lumbar punction. Negative pressure pulls meninges down. Also occurs if CSF is leaking through nose after trauma.

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27
Q

Which lobe of the brain is most likely injured in a traumatic brain injury?

A

The temporal and inferior frontal lobes (coup injury). Can cause uncal herniation.

Countrecoup injury is when the occipital lobe rebounds and gets injured.

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28
Q

Cushing reaction

A

Hypertension, bradycardia, respiratory depression from increased ICP due to mass or other.

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29
Q

Von Economo Encephalitis (encephalitis lethargica)

A

Occurred with the influenza virus from 1918 to 1928. Cause parkinsonism, oculogyric crises, dystonia, autonomic symptoms

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30
Q

Neurological injury associated with sarcoidosis?

A

Facial nerve palsy. Facial paresis with no sensory loss.

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31
Q

PML

A

Nonenhancing white matter lesions that cause hypertonia, LAD, involuntary movement, ataxia, dementia , and seizures. Rapidly progressive, caused by the JC virus.

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32
Q

Neurologic Symptoms of Schistosoma

A

Lay eggs in the veins of batson, can migrate and deposit in cord causing compression. Causes granulomatous inflammation in cord leading to focal weakness and paralysis.

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33
Q

Echinococcus brain cysts?

A

Large cyst filled with daughter cysts.

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34
Q

Creutzfeld Jacob Disease EEG findings?

A

Rapidly progressive dementia, EEG shows general slowing and triphasic sharp waves but LP is normal.

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35
Q

Creutzfeld Jacob disease symptoms and LP findings

A

Ataxia, gradual cognitive decline, myoclonus, seizures, involuntary movements. LP largely normal but sometimes can show 14-3-3 protein.

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36
Q

Creutzfeld Jacob disease imaging

A

DWI shows cortical and subcortical abnormalities.

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37
Q

CNS lymphoma caused by

A

EBV in HIV

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38
Q

When is it safe to LP somebody?

A

When there is no mass effect.

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39
Q

Most common form of acute encephalitis?

A

HSV-1

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40
Q

Microglial nodules associated with

A

HIV and CMV

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41
Q

EEG of herpes encephalitis

A

Bilateral periodic epileptiform discharges

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42
Q

Where do abscesses form?

A

At grey-white junction

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43
Q

Most common fungal abscess?

A

Aspergillus

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44
Q

What is more common in AIDS? Toxo or crypto?

A

Toxoplasmosis is more common. Can cause brain abscesses

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45
Q

Symptom of brain abscesses?

A

Headache is most common.

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46
Q

Most common bacterial cause of brain abscess?

A

Strep

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47
Q

How are staph brain abscesses acquired?

Which is more likely? Staph or enteric bacteria abscesses?

A

Penetrating wound or neurosurgery.

Enteric bacterial abscesses

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48
Q

Elderly person meningitis?

A

Listeria, treat with ampicillin and gentamicin.

49
Q

One interesting way CJD can be spread?

A

Through GH prep from cadaveric pituitary glands

50
Q

SSPE

A

Increase in gamma globulin in CSF. Causes emotional lability, seizures, chorioretinitis, ataxia, UMN destruction years after measles.

51
Q

Bartonella Henselae Encephalitis

A

From cats, can cause status epilepticus and affects the pulvinar of the thalamus on MRI.

52
Q

Most common brain tumor

A

astrocytoma

53
Q

Hyperostosis

A

Less common in 1 brain tumors than hypo-ostosis. Meningiomas can cause hyperostosis

54
Q

Pineal region tumors special characteristic

A

Can be from all germ layers, so can behave similarly to choriocarcinoma or germinomas which can cause precocious puberty.

55
Q

Which cancer is most likely met to brain without a primary tumor?

A

Lung

56
Q

Shortest lifespan after a met?

A

Melanoma due to a propensity for bleeding

57
Q

Tumors that met to brain and bleed?

A

Thyroid, choriocarcinoma, melanoma, renal cell carcinoma

58
Q

Hypothalamic hamartomas

A

Nonneoplastic malformations of neurons and glia that can cause neurendocrine symptoms (like puberty or acromegaly) and paroxysms of laughter known as gelastic seizures. Cure surgically

59
Q

Gelastic seizure

A

A paroxysm of laughter generally seen in patients with hypothalamic hamartomas.

60
Q

Paraneoplastic cerebellar degeneration

A

Anti-yo antibodies against cerebellar purkinje cells produced in SCLC gyn and breast maligancies. Relentlessly progressive. Often develops before primary cancer is apparent.

61
Q

Multiple myeloma neurological side effect?

A

Peripheral neuropathy. Can be solely sensory or sensorimotor, can put a patient in a wheelchair. Can also be seen with MGUS.

62
Q

Liver failure effect on the brain?

A

Changes astrocytes.

63
Q

CSF change with hypertensive encephalopathy?

A

Slight increase in protein (100 mg/dl)

64
Q

Common neurological consequence of chronic renal failure?

A

Peripheral neuropathy (mixed sensorimotor). Improves with dialysis.

65
Q

How to treat RLS?

A

Dopamine agonists

66
Q

B12 deficiency field cut?

A

Causes a scotoma that widens the macular blind spot.

67
Q

Deficiency ambliopia

A

Seen with B12 deficiency or alcoholism/tobacco use due to decreased thiamine.

68
Q

Which deficiency causes peripheral neuropathy?

A

B6.

69
Q

EEG finding of alzheimers

A

General slowing of the posterior dominant rhythm. It’s usually 8-12 Hz, but with AD it slows.

70
Q

Most common cause of dementia?

A

At least 50% is caused by AD.

71
Q

Common complication of VP shunts for NPH?

A

Subdural hematoma – due to quickly lowering pressure. presents with confusion.

72
Q

What type of aphasia is common in alzheimer’s?

A

Transcortical sensory. Repetition intact, but ability to understand complex sentences is decreased.

73
Q

Transient global aphasia

A

Antero and retrograde memory loss

74
Q

General paresis

A

Manifestations of neurosyphilis. Memory loss, inappropriate behavior, myoclonus, delusions.

75
Q

Symptoms of hypothyroidism

A

myoedema, inattention, poor concentration, delusions

76
Q

Nonenhancing white matter lesions

A

PML

77
Q

Bladder dysfunction in MS?

A

Spastic bladder = premature emptying

78
Q

Neuromyelitis Optica

A

Recurrent episodes of optic neuritis followed by transverse myelitis. Associated with anti-aquaporin4 antibody.

Paraparesis, bladder+bowel dysfunction, sensory deficit.

79
Q

Pelizaus-Merzbacher Disease

A

Demyelinating sudanophilic leukodystrophy, symptomatic as a toddler, may extend to 3rd decade.

Causes optic atrophy and athetosis

80
Q

How to treat hemangioblastoma from VHL?

A

Surgery

81
Q

Symptoms of VHL

A

Erythrocytosis, hemagioblastomas, cerebellar signs, hematuria, and HSM

82
Q

Cause of congenital hydrocephalus?

A

Viral infection like mumps, rubella, during first trimester.

83
Q

Tuberous sclerosis eye findings

A

Retinal phakomas– gliomatous tumors that require no treatment

84
Q

What are calcifications on Xray in tuberous sclerosis?

A

Subependymal glial nodules

85
Q

What does a downs syndrome brain look like?

A

Smaller and more simplified

86
Q

How does alcohol cause fetal alcohol syndrome?

A

It impairs fetal neuronal migration

87
Q

Myotonic dystrophy

A

CGG repeat disease with frontal balding, cataracts, repetitive EMG discharges with minor stimulation and impaired relaxation.

88
Q

Poorest prognostic indicator for ALS?

A

Tongue fasciculations, indicates spread to brainstem

89
Q

How does lead poisoning cause brain herniation in very young kids?

A

Massive brain edema

90
Q

Manganese poisoning symptoms?

A

Mimics Wilson disease

91
Q

Retinitis pigmentosa

A

Common hereditary disease involving retinal receptors. Causes optic disk pallor and usually abetalipoproteinemia

92
Q

Sturge-Weber opthalmic finding?

A

Glaucoma

93
Q

Papilledema vs papillitis

A

Papillitis has vision loss

94
Q

Gradenigo Syndrome

A

Osteomyelitis of petrous bone that can cause gaze palsy of abducens nerve in young kids.

95
Q

Eye muscle at risk during trauma

A

Superior oblique innervated by the trochlear.

96
Q

Ocular motor nerve likely to be involved with varicella zoster opthalmicus?

A

Trochlear

97
Q

If no optokinetic nystagmus, where is the lesion?

A

In the parietal lobe

98
Q

Vision loss with cherry red fovea and narrow arterioles?e

A

Occlusion of the central retinal artery

99
Q

Orbital cellulitis vs cavernous sinus thrombosis

A

Orbital cellulitis is characterized by periorbital pain, double vision, proptosis. Cavernous sinus thrombosis has these things PLUS vision loss.

100
Q

PRES

A

Posterior reversible encephalopathy syndrome, seen in cyclosporine and tacrolimus. Headache, visual dysfunction, confusion, seizures.

101
Q

Most common cause of acute monocular blindness?

A

Ischemic optic neuropathy

102
Q

Which is more likely to infarct? Anterior spinal artery or posterior spinal artery?

A

Anterior. So dorsal columns (vibration) usually spared.

103
Q

Early phases of meniere’s hearing loss?

A

Loss of low frequency sounds

104
Q

What causes toxic labyrithitis and tinnitus?

A

Aspirin

105
Q

How long does spinal shock last? What are the symptoms?

A

Lasts 3 days - 3 weeks. Causes lower motor neuron signs (hyporeflexia, decreased tone) even though the spinal cord is damaged

106
Q

What causes abdominal aortic aneurysm?

A

Atherosclerosis

107
Q

Level of the artery of adamkiewicz?

A

T10-L1

108
Q

Lyme radiculopathy

A

Lyme disease can cause a radiculopathy that is not cured by sertoids

109
Q

Most common cause of mononeuritis multiplex?

A

Diabetes mellitus

110
Q

Common sequellae of Friedrich’s ataxia?

A

Diabetes mellitus

111
Q

What is responsible for friedrich Ataxia peripheral findings?

A

Degeneration of the DRG

112
Q

Why is LP necessary in baby between 0 and 1 with fever and seizures?

A

Because meningitis can present this way in the absence of other symptoms.

113
Q

What do raccoon eyes signify?

A

Basilar skull fracture

114
Q

How to improve the outcome of a severe TBI?

A

Hypothermia

115
Q

How to treat optic neuritis

A

IV methylprednisolone

116
Q

% of women who develop MS after optic neuritis?

A

75%

117
Q

How to treat MS bladder spasticity?

A

Oxybutynin, imipramine, or anything else with anticholinergic properties

118
Q

How to treat GBM

A

Surgery then radiotherapy. Poorly responsive to chemotherapy.