Barbiturates Flashcards
Why have barbiturates fallen out of favor?
the “hangover” effect that results in prolonged drowsiness.
What is a barbiturate?
Any drug derived from barbituric acid.
Barbiturates are _ salts and are soluble in _ and form highly _ solutions.
sodium
water
alkaline
PH of pentathol is 10-11
Barbiturates are incompatible with what drugs?
Opioids
NMBs
Catecholamines
Barbiturates are available on as what type of mixture?
Racemic
Barbiturates are levorotary isomers of __ and __ and are twice as potent as __.
Thiopental
Thiamylal
dextrorotary isomers
Barbiturates are only available as what concentration of solutions?
2.5% (5% is to caustic to vessels!)
Prompt awakening from SINGLE dose barbiturates is from what?
REDISTRIBUTION
Barbiturates have __ CNS activity, and are formed from uria and __ acid.
NO (weird right?)
malonic
Substitution at # 2 & #5 ___ help determine drug ___.
carbons
characteristics