Introduction: Coronary artery disease (CAD) remains the most common pathology with which cardiologists and cardiac surgeons are faced.Controlling risk factors such as hyperlipidemia in patients with coronary artery disease, including candidates for coronary artery bypass grafting (CABG), seems to be of great importance and has serious effects on CABG morbidity and mortality.

Aim of the study: The objective of the study was to evaluate the relation between preoperative serum lipids level, and in hospital mortality in coronary artery bypass grafting (CABG) patients.

Patients and Methods: This retrospective study was conducted, to study the effect of impaired lipid profile on the early mortality in patients undergoing CABG surgery. The charts of 600 patients with CABG surgery done between 2008 to 2011 were reviewed. We found that only 182 patients had lipid profile done before surgery (30%).

Results: Every item was tested for its relation with early mortality. As regard cholesterol person Chi square value was 8.9 and the P=0.003, which is highly significant. , LDL P=0.027, which is mild significant. HDL P=0.27, which is not significant. And as regard the impaired whole lipid profile, the P=0.002, which is highly significant.

Conclusion: Impaired lipid profile (especially cholesterol and LDL) before CABG can significantly affect post operative mortality, and Controlling hyperlipidemia is important factor to decrease post operative mortality.

Keywords: CABG, lipids, early mortality