Increasing atrial fibrillation: What is the cause?

Abstract
A 72‐year‐old woman with a history of paroxysmal atrial fibrillation (AF) and sinus node dysfunction is seen in clinic for routine follow‐up. She had undergone radiofrequency ablation for AF and a dual chamber pacemaker implant (Medtronic Advisa DR MRI with 5076 active fixation leads; Medtronic, Minneapolis, MN, United States) five years prior.