absorbed into the brain and produce unconsciousness
When does recovery occur when using barbiturates?
recovery occurs when brain levels fall too low to affect the brain
Where are barbiturates redistributed?
into the liver
Where are barbiturates excreted?
kidneys
Is there a reversing agent for barbiturates?
no
Do barbiturates provide any analgesia effect?
no
Are barbiturates controlled?
yes
How are barbiturates supplied?
as a powder to be reconstituted
How should barbiturates be stored?
refrigerator
What are barbiturates administered?
bolus - all at once
give to effect - just enough to anesthetize the patient - half of calculated dose, monitor, additional increments as needed
What could barbiturates cause?
respiratory depression
apnea
cardiovascular depression
What kind of dose should hypoproteinemic receive? Why?
lower dose
because barbiturates are partially protein binding
What is a vicious cycle?
being deep causes patient to go deeper
How do you avoid or correct a patient from getting into a vicious cycle?
bag regularly
use lower dose
avoid altogether
Should very lean patients use barbiturates? Why?
no because barbiturates redistribute in fat and lean patients do not have enough fat for the barbiturates to redistribute in therefore the drug stays in their blood and brain longer and deepens/prolongs anesthesia
What happens to a patient if you inject barbiturates perivascularly?
causes tissue damage
What happens to a patient if they are underdosed or given barbiturates perivascularly?
can put patient into stage ll excitement and well be harder to anesthetize
What could a prolonged recovery from barbiturates cause?
liver problems
kidney problems
hypothermia
Should barbiturates be used in sick animals?
no
What barbiturate is the most commonly used in veterinary medicine?