“…Further analysis showed that poorer outcomes were associated with worse preoperative patient condition, as indicated by NYHA Class IV, LV fractional shortening <5% and severe MR (grade >2) [13,14]. Recently, Bove et al identifi ed EuroSCORE (a cardiac surgical risk prediction model), preoperative LVEDV index, LVESV index, NYHA functional class and associated non-cardiac morbidity as signifi cant risk factors by univariate analysis, but only EuroSCORE remained a signifi cant risk when multivariate analysis, which is a more appropriate statistical test for any outcome that can be infl uenced by multiple factors, was used [10].…”