STAT ECG Diagnoses: intermittent runs of nonsustained ventricular tachycardia vs. aberrant conduction

ECG Weekly Workout with Dr. Amal Mattu


A 36-year-old male with PMHx of RV failure, pulmonary hypertension, and HFrEF presents to the ED with shortness of breath, palpitations, and cough.  The following ECG is obtained:

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

  1. What is the heart rate and underlying rhythm?
  2. What is most likely cause of the intermittent runs of wide complex tachycardia?