ECG Basics and Fundamentals: the basics of left bundle branch block (LBBB) and how to diagnose acute coronary occlusion myocardial infarction in these patients

ECG Weekly Workout with Dr. Amal Mattu


A 65-year-old man presents to the ED with chest pain and diaphoresis concerning for an acute coronary syndrome. The following ECG is obtained:

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

  1. What conduction abnormalities do you notice?
  2. What is the significance of the ST segment abnormalities seen?
  3. Is this ECG concerning for occlusion MI?
  4. Would you activate the cath lab?