Can try phenytoin 250 mg IV in normal saline over 10 minutes followed by 100 mg IV Q5min as needed. Most will respond to 250 mg. Amiodarone is now approved for the treatment of life-threatening ventricular tachycardia and ventricular fibrillation unresponsive to other measures. Initial dose is 150 mg IV over 10 minutes, but this may be accelerated in critical situations. Most common side effects are hypotension, bradycardia.
Hypotension seems to be related to speed of infusion.
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