Preoperative Blood Urea Nitrogen-to-Left Ventricular Ejection Fraction Ratio is an Independent Predictor of Long-Term Major Adverse Cardiovascular Events in Patients Undergoing CABG Surgery: 10-Years of Follow-up Results

Abstract Background Long-term mortality rate following coronary artery bypass grafting (CABG) procedure is still considered to be high despite advances in surgical techniques and perioperative management. Identifying high-risk patients by using cost-effective and clinically useful parameters is needed. Methods Patients that were admitted to our cardiology clinic with the diagnosis of coronary artery disease (CAD) and underwent CABG between January 2008 and August 2010 were included. Study patients were followed-up for 112.6±17.8 months for major adverse cardiac events (MACE) which were defined as all-cause mortality and new-onset decompensated heart failure (HF). Results Patients in MACE (+) group were older (p 33 had a sensitivity and specificity of 74% and 64% respectively. Conclusion BUNEFr is a clinically useful and cost-effective parameter for the prediction of long-term mortality and new-onset decompensated HF in patients following CABG.