Sleep-Wake Disorders Flashcards
What is sedation?
reduces anxiety and evokes a calming effect/anxiolytic
-CNS depression
What is hypnotic?
evokes drowsiness and sleep maintenance
-higher degree of CNS depression than sedation
Explain dose-response curve?
Drug A: Barbiturates and alcohol, increase dose has additive effect
Drug B: Benzodiazepines, plateau’s
Explain absorption and distribution of sedative-hypnotic drugs? (3)
- lipid soluble
- good distribution to brain
- absorb well from GI tract
What is metabolism and excretion of sedative hypnotic drugs?
- active and inactive metabolites
- metabolized before excretion
- mainly by liver enzymes
What is tx for insomnia?
Benzodiazepines
Name the benzos for insomnia? (8)
Estazolam Eszopiclone Flurazepam Quazepam Temazepam Triazolam Zaleplon Zolpidem
T/F New nonbenzos Gaba agonist only have sedative effects?
True
What is MOA of benzondiazepines?
bind to benzo receptors in cerebral cortex, thalamus,
and limbic structures
-facilitate inhibitory action of GABA
What are clinical uses of benzos? (5)
insomnia muscle relaxant GAD panic attacks seizures
What is 1/2 life of benzos?
2-4 hrs
Where are benzos metabolized?
liver
Which benzos do not have active metabolites? (3)
lorazepam
oxazepam
zolpidem
Which benzo is rapid onset and short duration?
Alpralozam
Triazolam
Which benzo has a long half life and and active metabolite?
Flurazepam
Which benzo is a prodrug?
Clorazepate
Which benzo is absorbed slowly?
Temazepam
What are ADE of benzos?
daytime sedation tolerance cognitive impairment anterograde amnesia rebound insomnia anaphylaxis angioedema