MCQ 4

A 28-year-old woman presents to the emergency department after an intentional massive ingestion of diphenhydramine. On presentation, she is somnolent with a Glasgow coma scale of 6 and is intubated for airway protection. Appropriate supportive care is initiated, but she develops a polymorphic wide-complex tachycardia that is refractory to cardioversion and maximum medical therapy. What is the next best step in management to treat this tachyarrhythmia?
A. Preventing abnormal ventricular automaticity
B. Disrupting a re-entrant circuit
C. Decreasing the likelihood of the R on T phenomenon
D. Restoring appropriate coronary blood flow
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