Intermittent runs of nonsustained ventricular tachycardia

ECG Weekly Workout with Dr. Amal Mattu


A 48-year-old man presents to the ED with 3-4 days of palpitations. The patient has a stable blood pressure but is found to have new onset atrial fibrillation with RVR. He is placed in observation for rate control and telemetry monitoring when the monitor alarms. The following rhythm strip was obtained:

Before watching this week’s video, ask yourself these questions:

  1. What ECG abnormalities do you notice?
  2. Are patients with atrial fibrillation with RVR predisposed to develop ventricular ectopy/ventricular tachycardia?
  3. What is the most likely cause of the intermittent runs of wide complex tachycardia seen?