Alexander
Postalian, MD, Mohammad Saeed, MD, J. Alberto Lopez, MD, and Yochai Birnbaum,
MD
A 93-year-old
woman with no symptoms was admitted to the hospital for a pacemaker generator
exchange. She had a history of ischemic cardiomyopathy and was taking optimal
medical therapy. She had also experienced paroxysmal atrial arrhythmia, which
had been treated with atrioventricular node ablation and dual-chamber permanent
pacemaker implantation. Upon her arrival, a 12-lead electrocardiogram was
obtained (Fig. 1).