Rhythm Interpretation: how to avoid misdiagnosis of atrial fibrillation

ECG Weekly Workout with Dr. Amal Mattu


An elderly male presents to the ED after a syncopal episode. He is found to be weak and lightheaded on arrival, with hypotension and mild tachycardia. There is no evidence of acute heart failure. The following ECG is obtained:

Before watching this week’s video, ask yourself these questions:

  1. What ECG abnormalities do you notice?
  2. What is the underlying rhythm?
  3. How would you treat this patient?