ECG Basics and Fundamentals: PR segment or TP? the isoelectric baseline you should use to measure ST segment deviation

ECG Weekly Workout with Dr. Amal Mattu


 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:

  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?