Wolff-Parkinson-White (WPW) Syndrome with Atrial Fibrillation (Afib)

ECG Weekly Workout with Dr. Amal Mattu


A 53-year-old man presents to the emergency department with palpitations and lightheadedness. On arrival, he is found to have a wide complex tachycardia and the following ECGs is obtained:

Before watching the video, ask yourself:

    1. What is the physiological reason behind the rapid heart rate and varied QRS morphologies seen in this rhythm?
    2. How can inappropriate treatment worsen the condition and what are the preferred treatment options for this rhythm?