This observational study was approved by the local institutional review board (LUT/05/38/2006) and conducted in accordance with the amended Declaration of Helsinki and Good Clinical Practice regulations. Written informed consent was obtained from all subjects. Patients admitted to the Department ofCardiovascular Surgery of our tertiary centre between June 2006 and February 2007 who had type 2 diabetes mellitus and had undergone CABG surgery constituted the study group.