Potpourri of cases: the most common ECG findings in pulmonary embolism, electrical alternans, and so much more!

UMEM Potpourri ECG Cases with Dr. Amal Mattu


A 72-year-old woman presents the ED with atypical chest pain. She is found to be mildly tachycardic. The following ECG is obtained:

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

  1. What is the definition of normal sinus rhythm?
  2. What is the heart rate and rhythm of this patient’s ECG?