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9 Cards in this Set

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Class
Antidysrhythmic, Anesthetic
Mechanism of Action
As an antidysrhythmic, suppresses automaticity, excitability, and spontaneous depolarization of the ventricles. As an anesthetic, inhibits transport of ions across neuronal membranes.
Onset / Duration
<3 min / 10-20 min
Indications
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
Contraindications
2nd degree type II or 3rd degree AV block, ventricular ectopy in conjunction with hypoxia or bradycardia
Precautions
hepatic failure, CHF, age >70 years
Side Effects
bradycardia, hypotension, AV block, and cardiovascular collapse
Interactions
antidysrhythmics
Dosage
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