Rhythm Interpretation: the best lead to use to look for atrial activity, and a discussion on the most over diagnosed tachydysrrhythmia

ECG Weekly Workout with Dr. Amal Mattu


A 58-year-old male with no significant past medical history presents to the ED with palpitations. The following ECG is obtained on arrival with no prior ECGs available for comparison:

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

  1. What is the rhythm?
  2. What is your differential diagnosis and most likely cause?
  3. How would you manage this rhythm?