Neuro Drugs Flashcards
mechanism of ethosuximide
blocks thalamic T-tyle Ca 2+ channels
use of ethosuximide
first-line for absence seizures
notable SEs of ethosuximide
Stevens-Johnson syndrome
mechanisms of (-azepam) drugs
benzos - increase frequency of opening of GABA-mediated Cl channel
use of (-azepam) drugs
first-line for acute status epilepticus
mechanism of phenytoin
Na channel inactivation
use of phenytoin
- first-line treatment of tonic-clonic
- first-line prophylaxis for status epilepticus
- can also be used for simple, complex
notable SEs of phenytoin
- teratogen
- Stevens-Johnson
- peripheral neuropathy
mechanism of carbamazepine
Na channel inactivation
use of carbamazepine
- first-line for simple, complex, and tonic-clonic
- trigeminal neuralgia
notable SEs of carbamazepine
- hepatotoxicity
- teratogen
- SIADH
- Stevens-Johnson
- blood cell dyscrasias
mechanism of valproic acid
- Na channel inactivation
- inhibits GABA transaminase - increased GABA concentration
use of valproic acid
- first line for tonic-clonic
- can be used for simple, complex, absence
notable SEs of valproic acid
- hepatotoxicity
- neural tube defects
- tremor
- weight gain
mechanism of gabapentin
inhibits VG Ca 2+ channels
use of gabapentin
- peripheral neuropathy
- postherpetic neuralgia
mechanism of phenobarbital
increase duration of opening of GABA-mediated Cl channels
mechanism of topiramate
- blocks Na channels
- increases GABA action
notable SEs of topiramate
kidney stones
use of topiramate
migraine PPx
mechanism of lamotrigine
blocks VG Na channels
notable SEs lamotrigine
SJS
mechanism of levetiracetam
unknown
What is the most common cause of complex partial seizures in adults?
mesial temporal sclerosis
How do you treat the seizures of eclampsia?
MgSO4
What drug is first line for absence seizures?
ethosuximide
What drug is first line for status epilepticus?
IV lorazepam or diazepam
What drug is first line for PPx of status epilepticus?
phenytoin
What drugs are first line for tonic-clonic seizures?
- phenytoin
- carbamazepine
- valproic acid
What drug is first line for simple and complex seizures?
carbamazepine
How to treat OD of benzos?
flumazenil
How to treat alcoholic DT?
chlordiazepoxide or other benzo
mechanism of baclofen
inhibits GABA receptors at spinal cord level to induce muscle relaxation
mechanism of cyclobenzaprine
centrally acting muscle relaxant
mechanism of sumatriptan
5-HT 1B/1D agonists to induce vasoconstriction
use of sumatriptan
abortive for migraines
SEs of sumatriptan
coronary vasospasm (cannot use in CAD or Prinzmetal angina)
mechanism of memantine
NMDA receptor antagonist that prevents excitotoxicity
use of memantine
Alzheimer dz
mechanism of donepezil, galantamine, rivastigmine, tacrine
AChE inh
use of donepezil, galantamine, rivastigmine, tacrine
Alzheimer dz
mechanism of riluzole
NMDA antagonist that prevents excitotoxicity
use of riluzole
ALS - prolongs damage to motor neurons
mechanism of bromocriptine
dopamine agonist (ergot)
mechanism of pramipexole
dopamine agonist (non-ergot)
mechanism of amantadine
- increases DA release
- decreases DA reuptake
mechanism of L-DOPA
DA agonist that can cross the BBB
mechanism of carbidopa
blocks peripheral conversion of L-DOPA to DA by inhibiting DOPA decarboxylase
mechanism of entacapone, tolcapone
COMT inhibitors that prevent peripheral degradation of L-DOPA
mechanism of selegiline
MAO-B inh that helps prevent peripheral degradation of L-DOPA
mechanism of benztropine
antimuscarinic that improves tremor and rigidity in Parkinson
Long-term us of L-DOPA/carbidopa will lead to _____ following administration. This is known as ______.
dyskinesia, on-off phenomenon