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Use of Statins and Risk of Dementia in Heart Failure: A Retrospective Cohort Study

Abhishek S Chitnis1, Rajender R Aparasu2, Hua Chen2

  • 1Retrospective Observational Studies, Evidera, Lexington, MA, USA.

Drugs & Aging
|September 14, 2015
PubMed

Insights

This study found that statins do not reduce dementia risk in heart failure patients. Further research is needed to explore dementia prevention strategies for this population.

Area of Science:

  • Cardiology
  • Neurology
  • Pharmacology

Background:

  • Heart failure (HF) is linked to increased dementia risk.
  • Dyslipidemia may play a role in dementia development.
  • The effect of statins on dementia risk in HF patients is not well understood.

Purpose of the Study:

  • To investigate the effectiveness of statins in preventing dementia among heart failure patients.
  • To determine if statin use is associated with a lower incidence of dementia in this population.

Main Methods:

  • Retrospective longitudinal study of 8062 heart failure patients from a US Medicare Advantage Prescription Drug plan.
  • Analysis of dementia incidence over up to 3 years of follow-up.
  • Utilized multivariable time-dependent Cox models and inverse-probability-of-treatment weighting (IPTW) to assess dementia risk.

Main Results:

  • 1135 patients (14.08%) were diagnosed with dementia during a median 22-month follow-up.
  • Time-dependent Cox model showed no significant difference in dementia risk for current (RR 0.93, 95% CI 0.71-1.21) or former statin users (RR 0.99, 95% CI 0.79-1.25).
  • IPTW analysis yielded similar results, with no significant association between statin use and dementia risk.

Conclusions:

  • No significant difference in dementia risk was observed between current, former, and non-statin users in the heart failure population.
  • Statins may not be effective in preventing dementia in patients with heart failure.
  • Further investigation into dementia prevention in at-risk heart failure populations is warranted.
Abstract

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