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30 Cards in this Set
- Front
- Back
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With RA, you have a ____ blockade
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Stepped
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Stepped blockade: first is
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Sympathetic
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Stepped blockade: after sympathetic
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Temp
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Stepped blockade: after temp
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Pain
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Stepped blockade: after pain
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Motor
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Stepped blockade: after motor
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Pressure
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Stepped blockade: after pressure
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Touch
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Stepped blockade: after touch
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Proprioception
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Speed onset or DOA by: _____ doses
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Larger
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Speed onset or DOA by: _____ infusion techniques
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Catheter
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Speed onset or DOA by: using with
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Additives
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Common vasoconstrictor used with LA
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Epi
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A2 agonist used with LA
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Clonidine
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A2 agonists can be given:
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PO or in LA mixture
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Opioids add to _______ of block when mixed with LA
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Duration and efficacy
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Do not use clonidine with LA if a pt is on:
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Clonidine or precedex
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Speed onset or DOA by adding ____ to LA
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Bicarb
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Biologically active substances are frequently administered as very:
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Dilute solutions
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7% solution is ______ mg/ml
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70
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Epi is added to LA in extremely _____ concentrations, expressed as a ratio of grams of drug to total ml's of solution
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Dilute
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1:1000 epi is _____ mg/ml
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1
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Lido is packaged at a very low ____ to increase shelf life
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pH
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1:200,000 epi would be _____ mg/ ml, _____ mcg/ml, ____ mcg/ml
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1 mg/200 ml; 1000 mcg/200 ml; 5 mcg/ ml
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Vasoconstrictors should not be used in _____
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Small areas (fingers, nose, ear lobe, etc)
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If a pt is a vasculopath, you may not want to:
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Block an ankle, etc
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The onset time of LA is influenced by the molecule's _____ and ____
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pKa; diffusibility
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The higher the pKa, the ____ the onset time of the nerve block in a physiologic environment
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Slower
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The ability to cross the cell membrane depends on the ____ and the _____ of the molecule
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MW; liposolubility
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All LA have nearly the same
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MW
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The _______ of LA molecules from the injection site depends on its ______
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Diffusibility; hydrophilicity
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