Anesthesia Flashcards
What is anesthesia
sedation of a patient for the purposes of a medical procedure
what are four types of anesthesia
local, regional, general, and monitored anesthesia care (MAC)
what is the difference between local and regional anesthesia?
loss of sensation in a focused body area
loss of sensation in a region of a body
what kind of anesthesia is used for minor procedures?
local anesthesia (sutures)
what kind of anesthesia is used for major procedures
general anesthesia (abdominal surgery)
how is general anesthesia different from other anesthesia
total loss of consciousness
what is the similarity between general anesthesia and monitored anesthesia care
both affect systemically
how is monitored anesthesia care special?
conscious sedation (sedation at low levels to maintain vital signs without intubation)
- able to awake
- able to respond
- maintain vital signs without assistance
pathophysiology of local anesthesia
Na influx into neurons is blocked, efferent and afferent are both affected
kinetics of local anesthesia
lipophilic, metabolized via hepatic
Does local anesthesia cross BBB?
no
suffix for local anesthesia
- caine
onset and duration for local anesthesia
onset: less than 2 min
duration: drug dependent
three routes for local anesthesia are
topical, infiltration, nerve block
infiltration is SC injection into the _____
tissue
nerve block is SC injection near a ________
large nerve bundle
three adjunct medications for local anesthesia
- epinephrine (vasoconstriction)
- sodium bicarbonate (for bacterial acidify environment)
- opioids
What do we need to make sure if inject anesthesia into the epidural space?
no CSF return in needle
onset for epidural local anesthesia
20-30 minutes