After many years of lack of interest in the atrium by clinical cardiologists, the evidence of increased morbidity and mortality in patients with atrial fibrillation (AF) relocated the atrium to a central position in cardiology more than 2 decades ago.1 First came the studies showing improved outcome with the use of anticoagulants; later, the ever-lasting controversy on rate vs rhythm control; and at present, new imaging techniques and new therapeutic tools to better define atrial remodeling and improve therapy...