Amal Mattu’s ECG Case of the Week – February 7, 2022

HPI: A 50-year-old male is brought into the ED with palpitations and is found to have a regular wide complex tachycardia. He is treated with synchronized electrical cardioversion and immediately goes into ventricular fibrillation. The initial ECG and rhythm strip during cardioversion is shown below:



Case ECG



Before watching the video, look closely at this ECG and ask yourself:

  1. What is the most likely rhythm diagnosis based on the 12-lead ECG?
  2. What is the most likely reason for deterioration into ventricular fibrillation after cardioversion?
  3. What would be your next step in management?


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