Differential Diagnoses: must know causes of wide QRS complexes

ECG Weekly Workout with Dr. Amal Mattu


A 15-year-old girl presents to the ED listless and tremulous. She is unable to provide a reliable history. Her heart rate is around 150 bpm and she is mildly tachypneic with otherwise normal vital signs. The following ECG is obtained:

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

  1. What ECG abnormalities do you notice?
  2. What is the rhythm?
  3. What are 5 major causes of wide QRS-complexes?
  4. How would you treat the patient?