This is an interventional, double-blind, placebo controlled, multicenter, randomized clinical trial with allocation sequence concealment and blinded endpoint adjudication. The goal of present study is to investigate if periprocedural administration of 10 mg once daily empagliflozin, a sodium-glucose cotransporter-2 inhibitor (SGLT2I), can reduce the incidence of post-operative atrial fibrillation and/or atrial flutter in patients with chronic coronary syndrome scheduled for isolated CABG. This trial will be conducted in two referral teaching cardiology hospitals in Tehran. 492 adult patients who are scheduled for elective isolated coronary artery bypass graft (CABG) surgery will be randomly assigned to one of the groups of intervention (empagliflozin 10 mg daily) or placebo starting 3 days before surgery until discharge.