High-Grade AV Block: New Perspectives and Important Clarifications

ECG Weekly Workout with Dr. Amal Mattu

HPI

A 51-year-old man presents to the emergency department via EMS with nausea, vomiting, weakness, severe bradycardia (HR in the 20s), and hypotension (BP 60s systolic). The following ECG is obtained on arrival:

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

    1. What is your differential for non-conducted P waves (P:QRS>1)?
    2. Do high-grade or advanced AV blocks require constant PR intervals?
    3. How would you formally interpret and document this ECG?