Epilepsy drugs Flashcards
Ethosuximide - mech and indication
1st line: Absence seizures
Blocks T-type Ca channels
Ethosuximide - Side Effects
EFGHIJ
Fatigue, GI, Headache, Itching, Stevens-Johnson
What do you use for elcampsia seizures?
1st: magnesium
2nd: benzos
Phenytoin - mechanism and indiction
Inc. Na channel inactivation
All but absence seizures
Side effects of phenytoin
Gingival Hyperplasia Nystagmus Megaloblastic anemia Induces CYP450s Stevens-Johnson
Carbamazepine - mechanisms and indication
Inc. Na channel inactivation
All but absence
What do you treat trigeminal neuralgia with?
Carbamazepine
Side Effects of Carbamazepine
Blood dyscrasias, Hepatotoxicity,
Induce CYP450
SIADH
Stevens-Johnson
Valproic Acid
Inc. Na channel inactivation
All seizures, bipolar disorder
Side effects of valproic acid
GI distress, weight gain
Hepatotox - measure LFTs
Neural tube defects in fetus
Lamotrigine
Blocks voltage gated Na channels - all seizure types
Stevens Johnson syndrome
Stevens Johnson Syndrome
Malaise and fever followed by
Rapid onset of erythematous/purpuric macules
Epidermal skin necrosis and sloughing
Valproic acid inhibits __________ absorption
folic acid
Barbiturates
Phenobarbital, pentobarbital, secobarbital
Thiopental
When are the barbiturates contraindicated?
Porphyria
*CYP Inducer
What are the short acting benzos?
Midazolam
Oxazepam
Lorazepam
Triazolam
What are the long acting benzos
Chlordiazepoxide
Diazepam