AGT and hydrops fetalis: After adjustment, MHR (HR = 1.007, 95% CI: 1.003–1.012, P < 0.001), NGAL (HR = 1.004, 95% CI: 1.001–1.007, P = 0.017), Ang II (HR = 1.002, 95% CI: 1.001–1.004, P = 0.015), and LHR (HR = 1.002, 95% CI: 1.001–1.003, P = 0.023) were still associated with an increased risk of 1-month mortality and 1-year mortality in elderly patients with HF.