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Neurology Wk 4
n/a
90
Medical
Post-Graduate
09/24/2008

Additional Medical Flashcards

 


 

Cards

Term
Guillain Barre: associated w/ which infections?
Definition
herpes family viruses (CMV, EBV)
campylobacter jejuni
Term

Acid sphingomyelinase def

- Causes?

- Describe this condition

Definition

- Niemann Pick dz

- a lysosomal storage disorder resulting in organomegaly and neuromuscular disturbances

 

Term

Arylsulfatase A def

- causes?

- describe this disorder

Definition

- metachromatic leukodystrophy

- lysosomal storage disorder, resulting in central and peripheral demyelination --> ataxia and dementia

Term

JC virus

- causes

- describe this disorder

Definition

- progressive multifocal leukoencephalopathy

- demyelinating disorder

Term
which mineral is imp for regeneration of olfactory neurons?
Definition
zinc
Term
Gold standard test to dx narcolepsy
Definition
multiple sleep latency test (MSLT)
Term
use of polysomnography in dx'ing narcolepsy
Definition
high specificity, low sensitivity
Term
role of hypocretin CSF assay in dx'ing narcolepsy
Definition
not commercially feasible
Term
localize the lesion:
superior left quadrantanopia
Definition
lower portions of optic radiations in right temporal lobe
Term
most common clinical pattern of MS
Definition
remitting and relapsing
Term
describe appearance of white matter MS lesions on MRI
Definition
periventricular
Term
slow wave activity on EEG -
- indicative of?
Definition
focal brain dysfxn (i.e., tumor)
Term
xanthochromia in CSF
- suggestive of?
Definition
subarachnoid hemorrhage
Term
fxns of superior oblique
Definition
- depressor when eye is aDducted
- intorter when eye is aBducted
Term
fxns of inf oblique
Definition
- elevator when eye is aDducted
- extorter when eye is aBducted
Term
lesion to right 5th nerve
- sxs?
Definition
- R-sided facial sensory loss
- absent corneal reflex
- trouble chewing
Term
lesion to L 3rd nerve
-sxs?
Definition
- loss of L medial rectus, sup rectus, inf rectus, and inf oblique
- L sided ptosis
- dilated L pupil
Term
lesion to R MLF
Definition
- R eye inability to adduct upon L conjugate gaze
- L eye abducting nystagmus
Term
imp structures of vertical gaze pathway
Definition
- cn iii
- cn iv
- interstitial nuc of cajal
- rostral interstitial nuc of MLF
- posterior commissure
Term
pathologies that would press on anterior commissure (2)
Definition
- hydrocephalus
- pineal gland tumor
Term
impingement on posterior commissure would cause what prob in the vertical gaze pathway?
Definition
upgaze palsy
Term
triad of sxs for miller-fisher
Definition
- ataxia
- ophthalmoplegia
- areflexia
Term
thalamic syndrome
Definition
immediate hemianesthesia, w/ dysesthesias rising later
Term
prefrontal cortex
- fxn
Definition
role in behaviors that require an integration of thought w/ motivation and emotion
Term
Absence seizure
- classification?
Definition
generalized
Term
Absence seizure
- duration?
Definition
5-20 s
Term
Absence seizure
- triggered by?
Definition
hyperventilation
Term
complex partial seizure
- ave duration
Definition
1-2 min
Term
amygdala
- location (lobe)?
Definition
temporal
Term
hippocampus
- location (lobe)?
Definition
temporal
Term
features of temporal lobe-based simple partial and complex partial seizures (5)
Definition
- de ja vu
- olfactory/gustatory hallucinations
- epigastric rising sensation
- automatisms (in complex partial)
- amnesia
Term
characteristics of idiopathic epilepsy syndromes (7)
Definition
- no underlying pathology
- nl development
- relatively self-ltd
- medication responsive
- genetic predisposition common
- more likely to be generalized than focal
- better prognosis
Term
characteristics of symptomatic epilepsy syndromes (5)
Definition
- associated w/ neurological abnlities
- often have underlying cause
- frequent seizures
- difficult to control
- more likely to be focal than generalized
Term
absence seizure
- EEG pattern
Definition
3 Hz spike wave
Term
epilepsy syndromes associated w/ spontaneous remission (2)
Definition
- childhood absence epilepsy
- benign epilepsy w/ centrotemporal spikes
Term
epilepsy syndromes that require lifelong tx (3)
Definition
- juvenile myoclonic epilepsy
- lennox gastaut syndrome
- temporal lobe epilepsy
Term
juvenile myoclonic epilepsy
- EEG pattern
Definition
4-5 Hz generalized spike wave
Term
lennox gaustaut syndrome
- EEG pattern
Definition
1-2 Hz generalized slow spike wave
Term
temporal lobe epilepsy
- associated w/ what abnlity?
Definition
mesial temporal sclerosis
Term
R lenticulostriate arteries supply...
Definition
basal ganglia, motor fibers to face, hand, arm, and leg as the fibers descend thru the posterior limb of the internal capsule
Term
ischemia from PCA --> ?
Definition
affects visual cortex, causing homonymous hemianopia (may or may not have macular sparing)
Term
epidural steroid injections
- contraindicated in...
Definition
pts w/ infection
Term
charcot marie tooth
- inheritance pattern
Definition
autosomal dominant
Term
periaqueductal gray projects --> ?
Definition
rostral ventromedial medulla
Term
phenytoin
- used for which type of seizures?
- mech of axn?
Definition
- partial and secondary GTCS
- Na channel inactivation
Term
carbamazepine
- used for which type of seizures?
- mech of axn?
Definition
- partial and secondary GTCS
- Na channel inactivation
Term
oxcarbazepine
- used for which type of seizures?
- mech of axn?
Definition
- partial and secondary GTCS
- Na channel inactivation
Term
lamotrigine
- used for which type of seizures?
- mech of axn?
Definition
- partial and secondary GTCS
- primary generalized
- atonic or myoclonic
- GTCS
- Absence

- blocks voltage-gated Na channels
Term
gabapentin
- used for which type of seizures?
- mech of axn?
Definition
- partial and secondary GTCS
- incr GABA release
Term
topiramate
- used for which type of seizures?
- mech of axn?
Definition
- partial and secondary GTCS
- primary generalized
- GTCS
- incr GABA and blocks Na channels
Term
phenobarbitol
- used for which type of seizures?
- mech of axn?
Definition
- partial and secondary GTCS
- primary generalized
- incr GABA axn
Term
valproic acid
- used for which type of seizures?
- mech of axn?
Definition
- partial and secondary GTCS
- atonic or myoclonic
- GTCS
- absence
- atypical absence

- blocks Na channels and incr GABA
Term
ethosuximide
- used for which type of seizures?
- mech of axn?
Definition
- absence
- blocks T-type Ca channels
Term
benzodiazepines (diazepam, lorazepam)
- used for which type of seizures?
- mech of axn?
Definition
- not generally used as first line for any seizures
- incr GABA-A axn
Term
levatiracetam
- used for which type of seizures?
- mech of axn?
Definition
- partial and secondary GTCS
- primary generalized

- binds to SV2A to inhibit conduction across synapse
Term
primidone
- used for which type of seizures?
- mech of axn?
Definition
- partial and secondary GTCS
- likely incr GABA axn
Term
tiagabine
- used for which type of seizures?
- mech of axn?
Definition
- partial and secondary GTCS
- likely incr GABA axn
Term
zonisamide
- used for which type of seizures?
- mech of axn?
Definition
- partial and secondary GTCS
- mech unknown
Term
clonazepam
- used for which type of seizures?
- mech of axn?
Definition
- primary generalized
- incr GABA axn
Term
traditional first choice drugs for partial and secondary GTCS (2)
Definition
- carbamazepine
- phenytoin
Term
alternative 1st choices for partial and secondary GTCS
Definition
- gabapentin
- levatiracetam
- lamotrigine
- oxcarbazepine
- topiramate
Term
carbamazepine
- s efx
Definition
hyponatremia, leukopenia
Term
oxycarbazepine
- s efx
Definition
hyponatremia
Term
phenobarbitol
- s efx
Definition
cognitive deficits
Term
phenytoin
- s efx
Definition
gingival hyperplasia, hirsutism, worse osteoporosis
Term
lamotrigine
- s efx
Definition
dose and rate related skin rash
Term
topiramate
- s efx
Definition
cognitive deficits, renal stones, glaucoma, weight loss, irritability
Term
valproate
- s efx
Definition
weight gain, hair loss, tremor
Term
felbamate
- s efx
Definition
aplastic anemia, liver failure
Term
AEDs that inhibit hepatic enzymes (1)
Definition
valproate
Term
drugs that induce hepatic enzymes (5)
Definition
- carbamazepine
- phenobarbitol
- phenytoin
- primidone
- topiramate
Term
AEDs w/ no effects on hepatic enzymes
Definition
- gabapentin
-levetiracetam
Term
AEDs that lower the efficacy of OCPs
Definition
- phenytoin
- carbamazepine
- phenobarbitol
Term
emergency tx of status epilepticus
Definition
lorazepam (then fosphenytoin --> phenobarbitol --> midazolam or propafol)
Term
maintenance of circadian rhythms in humans is dependent on...
Definition
suprachiasmatic nuc
Term
structures that, when active, promote arousal inc (4)
Definition
- reticular activating system
- tuberomamillary nuc
- suprachiasmatic nuc
- basal forebrain
Term
initiation of non-REM sleep occurs as a result of adenosine accumulation where?
Definition
basal forebrain
Term
hydrocephalus can result in ___ nerve palsy, d.t. its path directly beneath the 4th ventricle
Definition
cn 6
Term
factors that influence sensitivity of diff nerves to diff anesthetics (3)
Definition
- size (diameter)
- myelination status
- conduction velocity
Term
desc myocardial s efx of amide anesthetics (esp bupivicaine)
Definition
arrhythmias and decreased myocardial contractility
Term
drug interactions:
- avoid lidocaine in these pts
Definition
pts on amiodarone
Term
drug interactions:
- avoid ester anesthetics in these pts (2)
Definition
- those pts allergic to PABA
- those being tx'd w/ sulfonamides
Term
neuronopathy
- def
- ex of disorder in this category
Definition
- disorder that principally affects nerve cell bodies in the ant horn of spinal cord or dorsal root ganglion
- ALS
Term
neuronopathy
- def
- ex of disorder in this category
Definition
- disorder that principally affects nerve cell bodies in the ant horn of spinal cord or dorsal root ganglion
- ALS
Term
autosomal dominant form of ALS associated w/...
Definition
abnl superoxide dismutase genes
Term
contraindications to general anesthesia
Definition
- malignant hyperthermia
- intracranial HTN
- severe hypovolemia
Term
tx for malignant hyperthermia
Definition
- Dantrium (large doses)
- cooling devices
Term
effect of heat on CNS fxning
Definition
slows electrical transmission in CNS
Term
wallerian degeneration
Definition
kill the axon, and the myelin degenerates secondarily
Term
is the brain parenchyma pain sensitive?
Definition
no
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