-The combination of preoperative EuroSCORE and postoperative serum NT-proBNP showed prognostic effects of LCOS: the cut-off of NT-proBNP level for detecting LCOS on N1, N2, N3 by the EuroSCORE was: 871.8 pg / ml, 2516 pg / ml, and 3556 pg / ml, respectively.