Grouped Beats: A Subtle AV Block Pitfall

ECG Weekly Workout with Dr. Amal Mattu

HPI

An elderly patient is brought to the emergency department with acute stroke symptoms and the following routine 12-lead ECG is obtained during the patient’s stroke evaluation:

Before watching this week’s workout, carefully review the ECG and consider the following:

    1. Is the rhythm atrial fibrillation?
    2. What is your differential for grouped beats or regularly irregular rhythms?
    3. How would you formally interpret and document this ECG?