Long and longer retrograde conduction. What is the solution?

Cardiac implantable electronic devices (CIED), such as pacemakers and implantable cardioverter-defibrillators, are implanted to prevent and treat rhythm disorders. However, CIED may also lead to the development of arrhythmias. We describe a case with a CIED-related arrhythmia where close examination of the electrocardiograms will reveal the diagnosis, etiology, and solution for this arrhythmia.