Postoperative atrial fibrillation following coronary artery bypass grafting continues to be a common and costly complication [ ]. As many as one in three cardiac surgery patients can expect to experience atrial fibrillation leading to longer hospital length of stay, increased cost, and more frequent readmission to the hospital. Postoperative atrial fibrillation may also be associated with increased perioperative and long-term morbidity and mortality in patients who experience it compared with those patients who do not [ ].