Background and Objectives: The clinical significance of worsening renal function (WRF) in elderly patients with acute decompensated heart failure (ADHF) is not completely understood. We compared the clinical conditions between younger and elderly patients with ADHF after the appearance of WRF to establish its prognostic influence. Methods: We included 654 consecutive patients (37% women) admitted for ADHF. We divided the patients into four groups according to their age (<80 years, under-80, n=331; ≥80 years, over-80, n=323) and to their WRF statuses (either WRF or non-WRF group). We defined WRF as an increase in serum creatinine level ≥0.3 mg/dL or ≥150% within 48 hours after hospital arrival (under-80, n=62; over-80, n=75). The primary endpoint was a composite of cardiac events within 1 year. Results: The survival analyses revealed that the WRF group had significantly more cardiac events than the non-WRF group in patients in the over-80 group (log-rank p=0.025), but not in those of the under-80 group (log-rank p=0.50). The patients in the over-80, WRF group presented more significant mean blood pressure (MBP) drops than those in the over-80 non-WRF group (p=0.003). Logistic regression analyses revealed that higher MBP at admission was a significant predictor of WRF. Conclusions: WRF is a predictor of poor outcomes in elderly patients with ADHF.
Background and Objectives: The clinical significance of worsening renal function (WRF) in elderly patients with acute decompensated heart failure (ADHF) is not completely understood. We compared the clinical conditions between younger and elderly patients with ADHF after the appearance of WRF to establish its prognostic influence. Methods: We included 654 consecutive patients (37% women) admitted for ADHF. We divided the patients into four groups according to their age (<80 years, under-80, n=331; ≥80 years, over-80, n=323) and to their WRF statuses (either WRF or non-WRF group). We defined WRF as an increase in serum creatinine level ≥0.3 mg/dL or ≥150% within 48 hours after hospital arrival (under-80, n=62; over-80, n=75). The primary endpoint was a composite of cardiac events within 1 year. Results: The survival analyses revealed that the WRF group had significantly more cardiac events than the non-WRF group in patients in the over-80 group (log-rank p=0.025), but not in those of the under-80 group (log-rank p=0.50). The patients in the over-80, WRF group presented more significant mean blood pressure (MBP) drops than those in the over-80 non-WRF group (p=0.003). Logistic regression analyses revealed that higher MBP at admission was a significant predictor of WRF. Conclusions: WRF is a predictor of poor outcomes in elderly patients with ADHF.
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