Palpitations with extra beats, a discussion on atrial parasystole

ECG Weekly Workout with Dr. Amal Mattu


A 17-year-old male with no significant PMHx presents to the ED with palpitations. He has no associated symptoms and is otherwise well. Vital signs are normal, but he is noted to have slight irregularity of the heart rate. The following ECG is obtained:

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 rhythm?
  3. What are the extra atrial beats called?