A patient has been resuscitated from cardiac arrest and is being prepared for transport. She is intubated and is receiving 100% oxygen. During the resuscitation she received 2 doses of epinephrine 1 mg, atropine 1 mg, and lidocaine 100 mg IV. You now observe the above rhythm on the cardiac monitor. The rhythm abnormally is becoming more frequent and increasing in number. You should order:
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repeat epinephrine 1 mg IV
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give lidocaine 0.5-0.75 mg/kg IV, start lidocaine infusion
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give lidocaine 1- 1.5 mg IV
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give amiodarone 150 mg IV, start infusion
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give amiodarone 300 mg IV, start infusion
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