NPPB and chronic kidney disease: After propensity score (PS) matching, the 112 patients with LVEF ≤ 30% compared with 336 patients with LVEF > 30%, as well as and the non-survivors with LVEF ≤ 30% (n = 13) and LVEF > 30% (n = 99) showed significantly higher preoperative NT-proBNP (p < 0.001, 0.043), larger diameters at preoperative left ventricle and atrium (p < 0.001, p = 0.015), lower preoperative TAPSE (p = 0.003, p = 0.016) and preoperative PAP (p = 0.003, p = 0.029), more dilated cardiomyopathy (p < 0.001 and p < 0.001), and more CKD (p = 0.045, p = 0.029).