Association between low-density lipoprotein cholesterol level and all-cause mortality in idiopathic dilated

Kexin Jiang1,2, Xiaobo Pu1, Yutong Liu3

  • 1Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China.

Acta Cardiologica
|August 15, 2023
PubMed

Insights

In idiopathic cardiomyopathy (iDCM) patients, lower low-density lipoprotein cholesterol (LDL-C) levels are linked to increased mortality risk. This association is more pronounced in patients with poorer heart function, suggesting LDL-C

Area of Science:

  • Cardiology
  • Clinical Research
  • Epidemiology

Background:

  • Low-density lipoprotein cholesterol (LDL-C) is a known cardiovascular risk factor.
  • The prognostic role of LDL-C in idiopathic cardiomyopathy (iDCM) remains unclear.

Purpose of the Study:

  • To investigate the association between LDL-C levels and all-cause mortality in patients with iDCM.
  • To explore the predictive value of LDL-C for prognosis in iDCM.

Main Methods:

  • Retrospective study of 1058 iDCM patients.
  • Analysis of demographic data and variable correlations.
  • Cox proportional hazards models used to assess mortality risk.

Main Results:

  • Lower LDL-C levels (< 1.78 mmol/L) were associated with a 1.52-fold increased risk of all-cause mortality.
  • Higher LDL-C levels (> 2.28 mmol/L) correlated with better prognosis.
  • In patients with NYHA class III/IV, LDL-C showed a hazard ratio of 0.83.

Conclusions:

  • Lower LDL-C is an independent prognostic factor for increased all-cause mortality in iDCM.
  • The predictive value of LDL-C is stronger in patients with advanced heart failure.
  • LDL-C may serve as a potential biomarker for risk stratification in iDCM.
Abstract

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