Postoperative Complication in Overweight Patients Undergoing Coronary Artery Bypass Graft Surgery

Abstract

Background: Obesity has a great impact on overall mortality and morbidity in cardiac surgery. The magnitude of obesity is defined by means of body mass index (BMI). At this study we aim to correlate between grade of BMI and postoperative complications in patients undergoing coronary revascularization. Methods: A prospective observational study was conducted in Ain Shams University hospitals and the National Heart Institute of Egypt. 98 patients with multi-vessel CAD and candidate for CABG were included in the study and divided into two groups Group I: 53 patients with BMI over 30. Group II: 45 patients with a BMI under 30. The primary endpoint was wound infection and mediastinitis. Secondary endpoints included mortality, prolonged ICU and hospital stay, stroke, renal and hepatic impairment. Results: As regard primary ending point, eight patients of Group I had their wounds infected which is significantly higher than the other group (p-value 0.034). The total ward stay in days was significantly higher in Group I (p-value 0.027). Conclusion: BMI more than 30 is associated with increased rates of wound complications either superficial or deep wound infections. Robust measures should be taken to prevent such grave complications.