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9 Cards in this Set
- Front
- Back
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Class
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Antidysrhythmic, Anesthetic
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Mechanism of Action
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As an antidysrhythmic, suppresses automaticity, excitability, and spontaneous depolarization of the ventricles. As an anesthetic, inhibits transport of ions across neuronal membranes.
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Onset / Duration
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<3 min / 10-20 min
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Indications
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Ventricular dysrhythmias: PVCs; v-tach; and v-fib, also used as a pre-medication in RSI, and as a local anesthetic. Viscous form is used as a local anesthetic prior to nasal intubation or NG tube placement
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Contraindications
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2nd degree type II or 3rd degree AV block, ventricular ectopy in conjunction with hypoxia or bradycardia
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Precautions
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hepatic failure, CHF, age >70 years
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Side Effects
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bradycardia, hypotension, AV block, and cardiovascular collapse
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Interactions
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antidysrhythmics
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Dosage
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Pulseless v-tach/v-fib: 1.5 mg/kg IV push every 3-5 minutes, maximum dose 3.0 mg/kg. V-tach with a pulse: 1.0-1.5 mg/kg slow IV push, may repeat at ½ dose in 5-10 minutes, maximum dose 3.0 mg/kg. If patient is >70 years, has hepatic failure, or CHF decrease second dose to ¼ of first dose. Post conversion: 1-4 mg/minute
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