Local Anesthetics Flashcards
Procaine onset of action
slow
Procaine duration of action
45-60 min
Procaine therapeutic use
used in conjunction with penicillin G to slow it’s release into systemic circulation
Procaine adverse effects
PABA - allergic reaction
Procaine lipid solubility
lowe
Procaine metabolite
PABA
Procaine linkage type
amino-ester linkage
Benzocaine linkage type
amino-ester linkage
Benzocaine solubility
very low solubility
Benzocaine therapeutic use
fish anesthesia
throat pain
Lidocaine linkage type
amide-linkage
Lidocaine onset of action
2-5 min
fast
Lidocaine duration of action
60-120 min
Lidocaine Therapeutic Use
local anesthetic
nerve block
IVRA
spinal anesthesia
endotracheal intubation
emergency anti-arrhythmic drug in dogs
Lidocaine adverse effects
high concentrations = CNS toxicity
Mepivacaine onset of action
rapid
Mepivacaine duration of action
130 min
Mepivacaine therapeutic use
equine limb blocks
Mepivacaine benefits
less post injection edema
Mepivacaine linkage type
amide-linkage
Bupivacaine onset of action
20-30 min
slow
Bupivacaine linkage type
amide-linkage
Bupivacaine duration of action
5-8 hours
Bupivacaine therapeutic use
infiltration
nerve blocl
intra-pleural anesthesia
spinal anesthesia
dental blocks
Dental Block drug combination
lidocaine + bupivacaine
1:4 ratio
Bupivacaine Adverse Effects
CVS toxicity
dysrhythmia
Intralipid therapeutic use
treat CVS toxicity caused by bupivacaine
Ropivacaine linkage type
amide-linkage
Ropivacaine onset of action
slow
Ropivacaine duration of action
360 min
Ropivacaine therapeutic use
Spinal anesthesia - diaphasic effect
EMLA therapeutic use
human use - derm, analgesia
EMLA components
mizture of lidocaine and prilocaine
What type of linkages do ophthalmic local anesthetics have?
amino-ester linkages
Proparacaine onset of action
fast
Proparacaine duration of action
45 min dogs
15 min cats
Tetracaine potency
more potent than proparacaine - lower dose, longer duration of action
Ophthalmic Local Anesthetics Therapeutic Uses
tonometry
conreal exam
biopsy
foreign body removal and suturing
Additional use of Tetracaine
used at lower doses for spinal anesthesia
MOA for all local anesthetics
block the propagation of AP by inhibiting the influx of Na+ through Navs