Neurological Outcome After Minimal Invasive Coronary Artery Bypass Graft

Primary objectives: Assessment of the incidence of postoperative cognitive dysfunction (POCD), cerebrovascular accident (CVA), and delirium after minimal invasive coronary artery bypass grafting (Endo-CABG). Secondary objectives: * Quality of life, three months after endo-CABG * Patient satisfaction with endo-CABG and the tests performed * The influence of various demographic and peri-operative variables on neurological outcome after endo-CABG * Incidence of fear and depression, 3 months after endo-CABG