Diastolic dysfunction predicts the risk of post-operative atrifal fibrillation after off-pump coronary artery bypass grafting

Abstract

Post-operative atrial fibrillation is a common complication after coronary artery bypass grafting. It is associated with increased risk of stroke and mortality, and duration of hospitalization. In 264 patients undergoing elective isolated off-pump coronary artery bypass grafting, preoperative clinical and echocardiographic data were compared between patients with and without post-operative atrial fibrillation. Diastolic dysfunction was defined as E/e’>8 (E: Peak early mitral pulsed-wave Doppler flow, e’: mitral lateral annular early velocities). In this study, diastolic dysfunction and age were the independent risk factors of post-operative atrial fibrillation. The evaluation of preoperative diastolic dysfunction might be useful in identification of high risk patient of post-operative atrial fibrillation.