ECG Weekly

Weekly Workout · #558 · September 8, 2025

Really Wide, Kind of Slow: VT vs. Toxicity

HPI

A 78-year-old woman with PMHx of atrial fibrillation presents to the emergency department with generalized weakness. She is noted to be tachycardic on arrival, is known to be on flecainide and also takes metoprolol as needed. The following ECG is obtained on arrival:

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