FA seizures Flashcards
partial (focal) seizures - often preceded by / types
seizure aura
- simple partial
- complex partial
simple vs complex seizure according consciousness
simple - intact
complex - impaired
Generilized seizures - types and characteristics
- absence (petit mal) - 3 hz, no postictal confusion,
blank stare - myoclonic - quick, repetitive jerks
- tonic clonic (grand mal) - alternating stiffening and movement
- tonic - stiffening
- atonic - drop seizures (falls to floor), commonly mistaken for fainting
epilepsy with fever?
FEBRILE SEIZURES ARE NOT EPILEPSY
ethosuximide - side effects
- GI 2. fatigue 3. headache 4. urticaria
5. Stevens-Johnson
epilepsy - benzodiazepines - drugs and clinical use
- lorazepam / diazepam
1. 1st line for acute status epilepticus
2. also for eclampsia seizure
phenytoin - mechanism
Fosphenytoin?
Na+ channel inactivation
ZERO kinetic order
- phenytoin for parental use
phenytoin - clinical use
- simple seizure
- complex seizure
- tonic clonic seizure (1st line)
- status epilepticus (1st line for prophylaxis)
Phenytoin - side effects
A. Neurologic 1. nystagmus 2. diplopia 3. ataxia 4. sedation 5. peripheral neuropathy
B. Dermatologic 1. gingival hyperplasia 2. hirsutism
3. Stevens-Johnson syndrome 4. DRESS syndrome
C. Musculosceletal: 1. SLE like syndrome 2. osteopenia
D. Hematologic: Megalobl anemia
E. Reproductive: teratogenesis (fetal hydantoin syndrome)
F. Other: c P-450 induction
carbamazepine - clinical use
- simple seizure (1st line)
- complex seizure (1st line)
- tonic clonic
- 1st line for trigeminal neuralgia
Carbamazepine - side effects
- diplopia 2. ataxia 3. blood dyscrasias (agranulocytosis, aplastic anemia) 4. liver toxicity
- teratogenesis 6. induction of P-450 7. SIADH
- Stevens-Johnson syndrome
Valproic acid - mechanism of action
- Na+ channel inactivation
2. increase GABA concentration by inhibiting GABA transaminase
Valproic acid - side effects
- GI 2. distress 3. rare but fatal hepatotoxicity (messure LFTs) 4. teratogenesis (neural tube defects) 5. tremor 6. weight gain 7. pancreatitis
Valproic acid - clinical use
- simple
- complex
- tonic-clonic (1st line)
- absence
- myoclonic
- bipolar disorder
- migraine prophylaxis
gabapentin - mechanism
- primarily inhibits high voltage activated Ca2+ channels
2. designed as GABA analogs
gabapentin - clinical use
- simple seizures
- complex
- peripheral neuropathy
- postherpetic neuralgia
Gabapentin - side effects
sedation
ataxia
phenobarbital - clinical use
- simple
- complex
- tonic clonic
- 1st line in neonates
topiramate - mechanism
- blocks Na+ channels
2. increase GABA action
topiramate - clinical use
- simple
- complex
- tonic - clonic
- migraine prevention
- idiopathic intracranial hypertension (pseudotumor cerebri)
topiramate - side effects
- sedation
- mental dulling
- kidney stones
- weight loss
lamotrigine - mechanism / SE
blocks voltage gated Na+ channels
- Steven Johnson Syndrome (must be titrated slowly)
lamotigine - clinical use
- simple seizure
- complex
- tonic-clonic
- absence
levetiracetam - mechanism of action
unknown. may modulate GABA and glutamine release
levetiracetam - clinical use
- simple seizure
- complex
- tonic-clonic
tiagabin - mechanism of action / clinical use
increases GABA by inhibiting reuptake
- partial
vigabatrin - mechanism of action / clinical use
increase GABA by IRREVERSIBLY inhibiting GABA tranasmaminase
- partial
epilepsy drug that induce P-450
- phenytoin
- Carbamazepine
- phenobarbital
trigeminal neuralgia - 1st line treatment
carbamazepine
eplepsy drugs with nystagmus
phenytoin
eplepsy drugs with diplopia
phenytoin and carbamazepine
eplepsy drugs with Steven Johnson syndrome
- phenytoin
- carbamazepine
- Lamotrigine
- ethosuximide
1st line treatment for tonoclonic seizures
- Phenytoin
2. Valproic acid
eplepsy drugs - status epilepticus 1st line
acute - benzodiazepines
prophylaxis - phenytoin
initial diagnostic workup of a 1st time seizure in an adult should include
- basic blood tests (electrolytes, glucose, Ca2+, Mg2+, CBC renal + liver),
- toxicology screen
if unprovoked –> further evaluation with neuroimaging and EEG
CT after a seizure - contrast or not
not