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Local anesthetics (routes of administration (epidural injections (compared…
Local anesthetics
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potency
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most potent agents are tetracaine, bupivacaine, and ropivacaine
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toxic effects
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cardiovascular toxicity
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decreased excitation, heart rate, myocardial cantractility
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CNS toxicity
early symptoms
tinnitus, agitation, restlessness, tongue numbness, metallic taste
somnolence, confusion, agitaion, visual auditory distrubances
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seizure activity is usually followed by period of CNS depression which results in impaired respiratory function or death
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clinical pharmacology
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applications
minor surgeries, c-section
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topical anesthetics
benzocaine
clinical application
otitis exerna,sore throat, toothache, teething,sunburn relief,canker sores, cold sores
benzonatate
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tongue and throat numbness if chewed or broken, may reduce gag reflex
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