STAT ECG Diagnoses: regular wide complex tachycardia (RWCT) after succinylcholine?

ECG Weekly Workout with Dr. Amal Mattu


A middle-age man presents to the ED with acute hypoxemic respiratory failure from multilobar pneumonia. He is intubated using etomidate and succinylcholine and noted to have a change in rhythm shortly after intubation. The following ECG is obtained:

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

  1. What is the most likely cause of the change in rhythm?
  2. What is the next best step in management of this patient?
  3. How frequently do ED patients have cardiac arrest post-intubation?