Potpourri of cases: using Sgarbossa criteria to diagnose acute occlusion myocardial infarction in LBBB and RV pacers, bizzare bradycardias, and so much more!

ECG Weekly Workout with Dr. Amal Mattu


A 70-year-old male with PMHx of HTN, HFrEF, and atrial fibrillation presents to the ED with nausea and lightheadedness. He is noted to be bradycardic on arrival. The following ECG is obtained:

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

  1. What is the heart rate and underlying rhythm?
  2. Is there evidence of a complete heart block?
  3. What is the most likely cause and treatment of choice?