ECG Basics and Fundamentals: the isoelectric baseline used to evaluate ST segment deviation

ECG Weekly Workout with Dr. Amal Mattu


HPI

A 45-year-old woman presents to the ED with severe chest pain. She is minimally cooperative when trying to obtain a history and is requesting pain medication for severe pain. Physical exam is non-diagnostic. 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 ECG abnormalities do you notice?
  2. What is the isoelectric baseline of the ECG upon which you evaluate ST segments?
  3. Is this ECG more consistent with STEMI or acute pericarditis to you?