RÉSUMÉ
A retrospective study was conducted to determine whether obesity is a predictor of mortality, morbidity or early readmission to hospital after coronary artery bypass graft [CABG]. We analyzed a large cohort of 1057 patients who had undergone isolated CABG. BMI [body mass index] was used as the measure of obesity. The preoperative, intera operative and postoperative risk factors as well as the complication and 30-day mortality rates were compared between the two groups [624 [65.5%] normal-weight and 328 [34.5%] obese patients]. Chi square test and logistic regression were used in univariate: and multivariate respectively. Of the 1057 patients, 59% had a normal weight and 31% were obese. An increased BMI did not increase the risk of 30-day mortality. In addition, increased BMI was not ; a predictor of the major complications; arrhythmia, renal complications, neurological complications, pulmonary embolism [PE] except myocardial infarction [MI] [1.8% vs 0.3% with p-value= 0.015]. Also investigation on mechanical ventilation time, Reintubation, length of stay in ICU, length of stay in hospital, and readmitting as postoperative variables revealed no significant difference on these two groups [normal-weight and obese patients] Conclusion: Obesity increased myocardial infarction after CABG, but it did not affect the other situations