Factors influencing the prognosis of patients with heart failure with preserved ejection fraction (HFpEF) have been extensively studied. Previous studies have found that elevated serum total bilirubin levels are associated with cardiac death, heart failure readmission, and all-cause mortality in patients with chronic heart failure. However, the relationship between direct bilirubin and prognosis in patients with HFpEF is unclear.
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The level of direct bilirubin
Timeframe: The day when patients on admission
a composite of heart failure rehospitalization or all-cause mortality
Timeframe: In an average of 3 year after discharge