Association of LDL-cholesterol with prognosis in patients admitted for acutely decompensated heart failure.

Abstract

Introduction and objectives: The association of low-density lipoprotein cholesterol (LDL-C) levels and prognosis in patients with heart failure (HF) remains uncertain. This study aimed to evaluate the prognostic significance of LDL-C in patients admitted for acutely decompensated HF and establish a safety cut-off value in this population.

Methods: This retrospective, observational study included 167 consecutive patients admitted for acute HF. LDL-C levels were measured on hospital admission, and patients were categorized according to their estimated cardiovascular (CV) risk. The primary endpoint was all-cause mortality at 1-year, while secondary endpoints included HF hospitalizations, major thrombotic events, and net clinical benefit.

Results: During the follow-up period, 14.4% of patients died. Higher LDL-C levels were independently associated with improved survival, with a 4-fold increase in survival probability for each 1mg/dL increase in serum LDL-C. The minimum LDL-C value not associated with increased mortality risk was 88mg/dL. Patients with LDL-C below this cut-off had a significantly higher risk of mortality and a tendency for higher HF hospitalization risk. The net clinical benefit endpoint was also influenced by LDL-C levels, with LDL-C below 88mg/dL associated with an increased risk of events.

Conclusion: In patients admitted for acutely decompensated HF, higher LDL-C levels were associated with reduced risk of mortality. An LDL-C value below 88m/dL was associated with increased mortality, suggesting the need for a more liberal LDL-C target in this specific patient population. These findings highlight the importance of considering LDL-C levels in the management and risk assessment of patients with HF.