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Impact of potentially lethal ventricular arrhythmias on long-term outcome in patients with chronic heart failure

Ye-hong Liu1, Jing-ying Su, Lin-jie Wang

  • 1Department of Cardiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Chinese Medical Journal
|April 12, 2012
PubMed

Insights

Potentially lethal ventricular arrhythmias (PLVAs) are common in chronic heart failure (CHF) patients, affecting 30.2%. These arrhythmias independently predict increased mortality and sudden death, highlighting their negative prognostic significance.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Heart Failure Research

Background:

  • Potentially lethal ventricular arrhythmias (PLVAs) are prevalent in acute myocardial infarction survivors and structural heart disease.
  • Their significance in chronic heart failure (CHF) requires further investigation.

Purpose of the Study:

  • To determine the prevalence of PLVAs in patients with CHF.
  • To assess the prognostic impact of PLVAs on long-term clinical outcomes in this population.

Main Methods:

  • Retrospective review of 1080 CHF patients (NYHA II-IV, LVEF ≤ 45%).
  • PLVAs defined by Holter monitoring criteria (ectopy, VT).
  • 5-year follow-up for mortality, sudden death, and rehospitalization.

Main Results:

  • PLVAs occurred in 30.2% of CHF patients, increasing with age.
  • Patients with PLVAs exhibited larger LV size, lower ejection fraction, and higher mortality.
  • Age and LV end-diastolic dimension independently predicted PLVA occurrence.
  • PLVAs were independent predictors of all-cause mortality and sudden death.

Conclusions:

  • PLVAs are a common finding in patients with CHF.
  • The presence of PLVAs significantly worsens long-term clinical outcomes, including mortality and sudden death.
Abstract

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