Flashcards in Exam V: CNS I Deck (10):
Region of cerebral cortex for decision making and problem solving
Inhibitory NT that controls anxiety
Patient in hospital that is going to undergo a surgical procedure, so you order which benzodiazepine with fast onset and short duration?
Which drug is used for Chlordiazepoxide (Librium) overdose?
Flumazeneil (Romazicon) benzodiazepine antagonist
Which is the one barbiturate that can be used for seizures?
Phenobarbital (Luminal) slow onset, long duration of action, seizure disorder
Amobarbital (Amytal), Pentobarbital (Nembutal), and Thiopental (Pentothal) = barbiturates used for sedation
Patient has panic disorder with feeling of doom when entering an elevator, what do you prescribe?
Patients may feel sense of doom accompanied by sweating, tachycardia, tremor =may create immediate relief (alprazolam or clonazepam)
Patients may respond to benzodiazepines or antidepressants (SSRI) = for long term treatment fluoxetine, paroxetine, sertraline
Which stage of sleep do you dream?
Stage 5/ REM Sleep
Mechanism of action of benzodiazepines
Increase frequency of channel opening which leads to increase in Cl- ion conductance
Benzodiazepines (BDZs) bind to the gamma sub-unit of the GABA-A receptor. Their binding causes an allosteric (structural) modification of the receptor that results in an increase in GABA A receptor activity. BDZs do not substitute/compete for GABA, which bind at the alpha sub-unit, but increase the frequency of channel opening events which leads to an increase in chloride ion conductance and inhibition of the action potential
An individual will not remember what happens from the time that the drug is administered to the time the drug effects dissipate
This is produced because they interfere with the formation of new memory they do not affect with the ability to recall past events