Off-pump surgery has involved into the most frequently adopted alternative technique to conventional on-pump coronary artery bypass grafting (CABG) in the treatment of patients with coronary artery disease. Our aim was to compare data analyses of complications and in-hospital mortality after on-pump vs off-pump CABG. Materials and methods: Retrospective data analyses research is based on 402 patients, ranging in 37-75 years of age. Operations CABG were performed in