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47 Cards in this Set

  • Front
  • Back
what causes the highest risk of seizure recurrence
symptomatic seizure and abnormal eeg
what kind of seizure causes a higher risk of a second one
partial
what two things are required for seizure generation
hypersynchrony and hyperexcitabilty
___ seizure is focal onset involving particular area of cortex). Signs and symptoms depend on what area of the brain is involved
partial
__seizure begin simultaneously in widespread brain regions in both hemispheres
generalized
what is char of simple partial seizure
no alteration of consciosuness, motor signs-jacksonian march, somato or special sensory symp, autonomic (vom), psychotic
what is char of complex partial seizure
altered consciouness is present
can partial evolve to general seizures
yes. simple to complex to secondary general...or just complex to secondary general
any other type of seizure is considered___
generalized
what are the phases of seizure
prodrome, aura, ictal, postictal
what are the ictal features of a seizure
Dyscognitive ( alteration in the level of consciousness)
Sensory symptoms (elementary such as somatosensory, visual, olfactory; experiential such as hallucinatory, illusory)
Motor symptoms (elementary such as clonic and/or tonic; automatisms such as lip smacking, hand picking)
what are postictal features
aphasia, todds paresis, confusion
what imaging should you do for seizure
MRI of the brain: with and without contrast – look for structural abnormality
PET scan of the brain – look for functional abnormality
CT of the brain – look for intracranial hemorrhage
do you have to have an abnormal eeg to have a seizure
nope fifty percent have normal eeg
better results if done within 24 hours
what is epilepsy
Epilepsy is the condition of recurrent (two or more) spontaneous (unprovoked) epileptic seizures
persist abnorm brain fxn that allows abnormal neuron firing
who does epilepsy occur most in
young kids and elderly
how do u get epilepsy
inherited or aquired through trauma, stroke, birth defect, infxn
what is the most comon generalized seizure disorder in adults!!
when is its onset
juvenile myoclonic epilepsy
12-18 years of age
assoc with mutations in several genes
what dz is this: frequent myoclonic seizures typically after awakening,mostly in arm, no impair consciousness may progress to generalized tonic clonic
Juvenile myoclonic ep
what does eeg of interictal JME look lik
Fast (3.5- to 6-Hz) and irregular spike-and-wave and polyspike-and-wave complexes
possible photoparoxysmal
what is the most common form of focal epilepsy
Mesial Temporal Lobe Epilepsy with Hyppocampal Sclerosis
Mesial Temporal Lobe Epilepsy with Hyppocampal Sclerosis--what structures are involved
hippo gyrus, amygdala, hippo
--these type of seizure are likely to recurr and are more resistant to AED
when do Mesial Temporal Lobe Epilepsy with Hyppocampal Sclerosis typically occur
childhood and adolesence
what causes and increase chance of getting mesial temporal lobe ep
a neuro hx of febrile seizures, meningitis, head injury, fmaily hx of seizures
how do mesial temporal seizures start
simple partial with rising epigastric sensation, dejavu, olfact symp
what are symp of mesial temp that have spread to both hem
Behavioral arrest with unresponsiveness
Quiet staring with widened palpebral fissures
Oroalimentary automatisms
what do longer mt seizures progress to
Limb automatisms
what happens if MT seizures spread outside the temp lobe
motor symptoms of the contralateral hand, arm, or leg occur
Dystonic posturing if coming from Basal ganglia, and Clonus if coming from primary motor complex
what can occur if MT seizure happens during sleep
secondary generalization
what happens postictally after MT seizure
The patient is often confused and amnestic for the ictal event
post ictal localization: aphasia, hemiparesis, nose wiping with hand ipsilat to ictal side
how long do mt seizures last
1-3 mins
what does interictal MT seizure eeg show
May be normal
May show focal slowing over the temporal region
May show focal spike-and-wave or sharp-and-slow-wave discharges
what does ictal MT seizure eeg show
5-7Hz rhythmic sharp activity over anterior and inferior temporal regions
what does neuro imaging of MT seizure show
MT sclerosis (MTS)
Focal lesion in MT region (ex. tumor)
what is carbamazapine used for
who needs low dose
works well for partial seizures but can make primary generalized seizures worse
low dose for elderly
what is valproic acid used for
who needs low dose
drug of choice for primary generalized seizures/ epilepsy
-low dose for elderly
what is lamotrigine used for
can be used for both partial and primary generalized seizures ( but may not control associated GTCS), and requires long titration time
which two AEDs are assoc with teratogenic effect
carbamazapine and valproic acid
what AED should be avoided in patients taking warfarin
phenytoin- if you have to give it monitor serum levels of both meds closely
avoid___ in patients with mood disorders
levetiracetam
what drugs should be considered in pt with seizure,migraine, and or mood disorder
valporic acid and topiramate
___ is a good drug for pt with epilepsy and mood disorder
lamotrigine
------- is one continuous unremitting seizure lasting 30 minutes or longer, or recurrent seizures without regaining consciousness between seizures for 30 minutes or longer
status epilepticus
who much time for seizure is sufficient to damage a neuron
5 mins
what is char of generalized convulsive seizure
Associated with multiple cerebral and systemic complications
If remains untreated, motor manifestations subside
what is the ideal timing to stop a seizure and prevent damage
within a half hour
what are the 4 main drugs to treat Seizure
lorazepam, diazepam, phenytoin, phenobarbital