Figure 1: Flow-chart of the study. From January 2008 to April 2008, 150 consecutive patients, undergoing primary isolated on-pump CABG surgery, were enrolled. 25 patients with history of atrial arrhythmias and 22 patients undergoing concomitant valve surgery were excluded from the analysis. Finally, 103 patients, divided into two groups on the basis of statin medication, were included in our study and anamnestic and clinical data were collected. All patients were followed for 7 days after surgery to assess the incidence of perioperative adverse events.