Challenged Atrioventricular Node Ablation in a Patient With Atrial Fibrillation With Rapid Ventricular Rate and Wide QRS Complex.

This case report describes a patient in their 60s with a history of palpitations for more than 10 years and dyspnea for 3 years who had undergone a single-chamber pacemaker implant 10 years prior for sick sinus syndrome with paroxysmal atrial fibrillation.