Minor Surgery l Flashcards
Local anesthetics block ____ to prevent _____ of pain stimuli
Na
deoplarization & propogation
“non polarization block”
If you have 10 cc of 1% lidocaine,, how many mg?
100 mg of lidocaine
add a zero
Dehiscence - wound rupture along incision after suture is closed. resuture within how long?
48-72 hrs
1 cc of 1% is ___ of lidocaine
10 mg
SQ angle degrees
30-35
ID angle degrees
5-10
IM angle degrees
90
Amides are metabolized by _____ organ.
liver
true allergies are _____
rare
lidocaine is a ______ metabolized by Liver
amid
lidocaine onset and duration
1-10 min onset
30 -60 min duration
Topical amides
lidocaine and EMLA cream/patch
Bupivaine/Marcaine used for what?
digit blocks
Mepivicain
8-10 min onset
2-2.5 hr duration
Mepivicain max adult
5 mg/kg of 1%, not ot exceed 400 mg
Ester metabolized in ______ by ______
peripheral plasma (procaine plasma) pseudocholinesterase
Ester - what type of reactions
more allergic reactions
Ester Topicals:
benzocaine - poorly absorbed, need at least 10%
proparacaine - ophthalm, < 1 min onset, 15 min duration
cocaine - ENT procedures, < 1 min onset, 1 hr duration
TAC - tetracaine, epi, cocaine, cheap and fast
Benzocaine
ester
Infiltrative ester
procaine/novocaine - allergic rxn common, slower onset and same duration as lidocaine
TAC
tetracaine, epi, cocaine, cheap and fast
cocaine
ENT procedures, < 1 min onset, 1 hr duration
proparacaine
ophthalm, < 1 min onset, 15 min duration
benzocaine
poorly absorbed, need at least 10%
Signs of ADRS to anesthetics:
toxicity
allergic/hypersens
autonomic - hyper, tachy, sweat, dizzy syncope
toxicity
Tx with ____
SSx
inadvertent injection into major vessel CNS depressant (bradycardia, hypotension) Tx w O2
Allergic RXn to anesthetics; TX?
TX w benedryl
Severe tx w EPI
MC anesthetic to result in allergic rxn?
procaine
Uses of EPI
decrease oozing
eliminating absorp
decrease risk of toxic rxns circulating anesthetics
(keeps everything in that area)
SE of EPI
anxiety, restlessness, tremors, palps, tachy
DOSE of EPI
______ concentrations with MAX of _____
1:200,000
< 0.2 mg
Ax of EPI
IV push of Mg and B6 (increase COMT metabolism)
also, betaglucagon
Caution use of EPI with pt with
PVD, HTN