NPPB and acute kidney injury: The results revealed that creatinine (OR = 0.975, 95% CI: 0.952 to 0.999, P = 0.042), WBC (OR = 1.166, 95% CI: 1.034 to 1.315, P = 0.012) and NT-proBNP (OR = 1.013, 95% CI 1.004 to 1.022, P = 0.006) were associated with the incidence of CA-AKI (Table 3).