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Local Anesthetics
Test 2
14
Pharmacology
Professional
02/21/2010

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Cards

Term
Unionized vs ionized forms (local)
Definition
Unionized- pref enter the epineurium and the cell membrane
Ionized- Bind the channel
Term
How locals work
Definition
Bind and stabilize inactive state of sodium channels
Term
Order of fxnal block (locals)
Definition
1. pain 2. cold 3. warmth 4. touch 5. deep pressure 6. Motor fxn
Term
Ester metabolism
Definition
Plasma esterase Metabolism can cause allergic rxns
PABA interferes with sulfonamides
Term
Amide metab (locals)
Definition
CytP450 (bad with liver problems)
Term
Lidocaine
Definition
Amide type
-Moderated duration
-Good for IV regional anesthesia
Term
Procaine
Definition
Ester type (PABA)
-slow onset, short duration (low protein binding)
Term
Mepivacaine
Definition
Amide type
-Toxic in neonates
Term
Bupivacaine
Definition
Amide Type
-Cardiotoxic
-Long acting (long surgeries)
-Good for OB because doesn't block mucle
Term
Ropivacaine
Definition
Amide type
-Long acting
-Blocks muscle
Term
Tetracaine
Definition
Ester type
-Slower metabolism/more systemic toxicity
Term
Cocaine
Definition
Ester type
-Decrease operative bleeding (blocks reuptake of NE)
Term
Benzocaine
Definition
Ester type
Popular topical, low solubility
-Methemoglobinemia
Term
Prilocaine
Definition
Amide
-Methemoglobinemia
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