STAT ECG Diagnoses: differential diagnoses for low voltage QRS complexes and ventricular arrhythmias in patients with left ventricular assist devices (LVADs)

ECG Weekly Workout with Dr. Amal Mattu


An 82-year-old man is brought to the emergency department with confusion and decreased level of consciousness. He is noted to be hypotensive, bradycardic, hypothermic, and hypoglycemic. The following ECG is obtained:

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

  1. What is the heart rate and rhythm?
  2. What is your differential diagnosis for the low voltage QRS complexes seen?
  3. What is the most likely diagnosis?