Sedative-Hypnotic-Anxiolytic Drugs Flashcards
Binding site for benzodiazepines?
on the alpha gamma interface
BZ 1receptor
BZ 2 receptor
GABA A activation increases influx of what ion?
Cl- influx
GABA B activation increase efflux of what ion?
K+ efflux
BZ1 stimulation typically mediates what affects?
sedation
BZ 2 stimulation typically mediates what effects?
anti anxiety and impairment of cognitive functions
Antidote for benzodiazepines?
flumazenil
T/F. Barbiturates inhibit complex I of electron transport chain?
true
What is the common suffix for benzos?
zolam
zepam
Which drug, barbs or benzos, increase frequency of Cl- channel opening?
benzos
Which drug, barbs or benzos, increase duration of Cl- channel opening?
barbs
One benzodiazepine that doesn’t follow the zolam and zepam rule?
chlordiazepoxide
Indication for Alprazolam.
anxiety, panic, phobias
Indication for Diazepam.
anxiety, preop sedation, muscle relaxation, withdrawal states
Indication for Lorazepam
anxiety, preop sedation, status epilepticus (IV)
Indication for Midazolam. What is a good benefit for using this drug when performing certain procedures like colonoscopy?
Preop sedation, induction anesthesia IV
can cause anterograde amnesia
Indication for Temazepam
Sleep disorders
Indication Oxazepam
sleep disorders, anxiety
Barbiturates are contraindicated in patients with what condition?
porphyrias
Distinguish what type of anxiety BZs are effective in treating vs SSRIs and SNRIs?
BZs acute anxiety while SSRIs and SNRIs are more for chronic anxiety
Can there be cross-tolerance between BZs, barbs, and ethanol?
yes
What are some withdrawal rebound signs of BZs?
- rebound insomnia
- anxiety
- seizure when BZs were used as anti epileptic or in high doses
Withdrawal signs of barbs and ethanol?
anxiety, agitation, life-threatening seizures like (delirium tremens with alcohol)
What are some ways to manage withdrawal symptoms from barbs and alcohol?
supportive and long-acting BZs
Drug interactions of GABA-A drugs?
additive with other CNS depressants (possible life-threatening respiratory depression) such as anesthetics, antihistamines, opiates, B-blockers, etc.
-barbiturates induce metabolism of lipid soluble drugs like OCs, carbamazepine, phenytoin, warfarin, etc.
Non Bz drugs that stimulate BZ1 receptors.
Zolpidem and Zaleplon
Indications for Zolpidem and Zaleplon?
sleep disorders
Is there less or more abuse liability and tolerance with the use of Zolpidem or Zaleplon? What is a S/E of them?
less tolerance and abuse liability (sleepwalking)
MOA of Buspirone.
5-HT1A partial agonist
Indications for Buspirone?
GAD
Does Buspirone have sedative properties?
non sedative
What is an important thing to note and/or let the patient know if you prescribe buspirone?
may take 1 to 2 weeks for effects
Suvorexant MOA.
orexin promotes wakefulness
Suvorexant blocks orexin leading to sedation
Indication suvorexant.
insomnia