NPPB and Hyperkalemia: In terms of baseline data, except for the proportion of hyperkalemia (16.7% vs. 3.8%, P = 0.002), serum albumin level (38.4 ± 4.9 vs. 34.5 ± 5.3 g/L, P < 0.001), and RVDd (18.3 ± 3.0 vs. 17.0 ± 3.0 mm, P = 0.023), there were no significant differences between the two groups in terms of cardiac indexes including NT-proBNP and other echocardiographic outcomes (Table 3).