ECG of the Week 24th April 2024

The following ECG is from an 80-year-old man who has been referred by his GP with worsening renal failure. He has a history of atrial fibrillation with bradycardia, for which he has a pacemaker. His medications include metoprolol 25mg BD.


  1. What are the key ECG features?
  2. What are the potential causes of these features?