You are evaluating a patient with a 15-minute duration of chest pain during transportation to the emergency department. He is receiving oxygen, and 2 sublingual nitroglycerin tablets have relieved his chest discomfort. He has no complaints but appears anxious. BP is 130/70 mm Hg. You observe the above rhythm on the monitor and your next action is:
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administer nitroglycerine 0.4 mg SL
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start epinephrine 2 to 10 ụg/kg per minute and titrate
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initiate transcutaneous pacing (TCP)
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give atropine 0.5 mg IV
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continue monitoring patient, prepare for TCP
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