Epilepsy Flashcards
Partial seizure
start at focus
Simple partial seizure
type of partial
spread is limited
stay awake, memory intake
Complex partial seizure
type of partial
alteration of consciousness - appear confused
Generalized seizures
not linked to single foci
involves entire cerebrum
Absence seizures
Petit Mal
type of generalized
disruption in intentional behavior effects consciousness and memory
Simple ansence seizures
type of generalized
usually grow out of it
Tonic clonic seizures
Grand mal
type of generalized
have 3 phases
3 phases of tonic clonic seizures
initial tonic phase
clonic phase
terminal phase
Epilepsy
2 seizures unattributed to some other disease process
Goal of therapy
least seizures least AEs
Phenobarbital abbrev.
PB
Phenytoin abbrev.
PHT
Phenytoin brand
Dilantin
Primidone abbrev.
PRM
Primidone brand
Mysoline
Ethosuximide abbrev.
ETX
Ethosuximide brand
Zarontin
Carbamazepine abbrev.
CBZ
Carbamazepine brand
Tegretol
Valproic acid abbrev.
VPA
Valproic acid brand
Depakene, Depakote
Felbamate abbrev.
FBM
Felbamate brand
Delbatol
Gabapentin abbrev.
GBP
Gabapentin brand
Neurotin
Topiramate abbrev.
TPM
Topiramate brand
Topamax
Lamotrigine abbrev.
LTG
Lamotrigine brand
Lamictal
Levetiracetam abbrev.
LEV
Levetiracetam brand
Keppra
Oxcarbazepine abbrev.
OXC
Oxcarbazepine brand
Trileptal
Zonisamide abbrev.
ZNS
Zonisamide brand
Zonegran
Pregabalin abbrev.
PBG
Pregabalin brand
Lyrica
Tigabine abbrev.
TGB
Tigabine brand
Gabitril
LAcosamide abbrev.
LAC
Lacosamide brand
Vimpat
Rufinamide abbrev.
RUF
Rufinamide brand
Banzel
Vigabatrin abbrev.
VGT
Vigabatrin brand
Sabril
Clobazam abbrev.
CLB
Clobazam brand
Obfi
Ezogabine abbrev.
EZG
Ezogabine brand
Potiga
Perampanel abbrev.
PRP
Perampanel brand
Fycompa
Eslicarbazepine abbrev.
ECBZ
Esilcarbazepine brand
Aptiom
Brivaracetam abbrev.
BRV
Brivaracetam brand
Briviact
Keppra MOA
glutamate receptor antagonist
Keppra monitoring
dose adjust based on GFR
Keppra AEs
Weight gain
enhances CNS depressants
Oxcarbazepine use
adjunctive in partial seizures in children 6 and older
Oxcarbazepine monitoring
sodium, sometimes hepatic, no routine bloodwork
Oxcarbazepine AEs
more common in kids
HA, dizzy, N/V
RASH
Oxcarbazepine benefit
lower potential for DDI
Lamotrigine use
Partial onset, absence, generalized
Lamotrigine MOA
Na channel blockade, H current enhancement, glutamate receptor antagonist
Oxcarbazepine MOA
Na channel blockade, GABA enhancement
Lamotrigine AEs
SJS more common with fast titrate and with VPA
Lamotrigine Advantage
Broad spectrum, low teratogenic, non sedative
Gabapentin use
partial seizures - mono or add on
Gabapentin MOA
Ca channel blockade, H current enhancement, glutamate receptor antagonist
Gabapentin AEs
dizzy, ataxia, weight gain, abuse
Higher dose = less % absorbed
Gabapentin Advantage
no PK DDI, low neurotoxic, use for bipolar and neuropathic
Phenytoin use
Generalized seizures
Phenytoin MOA
Na channel blockade, glutamate receptor antagonist
Phenytoin monitoring
when giving IV monitor cardiac and BP
Phenytoin AEs
capacity limited metabolism, concentration dependent nystagmus, double vision
idiosyncratic: aplastic anemia, granulocytopenia, SJS
Chronic: gum hypertrophy, osteoporosis, fetal vitamin K depletion
Fosphenytoin purpose
Prodrug for phenytoin, for IV and IM
Valproate MOA
Na channel blockade, Ca channel blockade, GABA enhancement
Valproate monitoring
baseline LFTs, platelets
coagulation prior to surgery, periodic serums
Valproate AEs
N/V/D, increase LFTs, spina bifida, drowsy, hair loss, weight gain
Valproate C/Is
Hepatic dysfunction or disease
Valproate DDIs
decreased by CBZ, LTG, PHT, rifampin
increased by ASA, chlorpromazine, cimetidine, felbamate
Carbamazepine use
Partial seizures, secondarily generalized seizures
Carbamazepine MOA
Na channel blockade, GABA enhancement
Carbamazepine monitoring
baseline CBC and monitor if decrease in WBC, LFTs
occasionally serum monitoring weekly during first
Carbamazepine AEs
dizzy, HA, N/V, hyponatremia and water intoxication, diarrhea, diarrhea, transient leukopenia or aplastic anemia
Carbamazepine C/Is
d/c if leukopenia ANC < 1500
d/c MAOi’s 14 days before
Carbamazepine DDIs
stimulates 3A4s - metabolize anticoags, OCs, cyclosporine, doxy, theophylline
metabolism inhibited by cimetidine, clarithro, erythro, fluoxetine
AEDs that increase chance of pregnancy
enzyme inducing
Phenobarb, pheny, primidone, carbamazepine
inc. clearance of OC’s
AEDs to avoid in pregnancy
VPA + CBZ
LTG
PB - neonatal withdrawal
Breastfeeding C/Is
Ethosuximide, zonisamide, clonazepam, diazepam