Predictors of in-hospital mortality, 20-year survival and reflection on risk scoring in patients with impaired left ventricular function undergoing isolated coronary artery bypass grafting

Abstract Background Impaired left ventricular ejection fraction (LVEF) is a risk factor for mortality in patients undergoing coronary artery bypass grafting (CABG). Limited data is available on survival after 5 years and sensitivity of preoperative risk scoring systems in this high-risk population. Purpose To investigate in-hospital mortality, 20-year survival, predictors of early and late mortality and sensitivity of available risk-scoring systems in a large population with moderate to poor baseline LVEF and undergoing isolated CABG. Methods Patients presenting with moderate to poor LVEF and undergoing isolated CABG between 1996 and 2015 were selected for the purpose of this study. LVEF was defined moderate if between 30–39% and poor if