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Heart rate turbulence in patients with chronic heart failure

Ewa Trzos1, Maria Krzemińska-Pakuła, Tomasz Rechciński

  • 12nd Chair and Department of Cardiology, Medical University, Bieganski Hospital, Lodz, Poland. ewa_trzos@op.pl

Kardiologia Polska
|December 24, 2008
PubMed

Insights

Heart rate turbulence (HRT) parameters, specifically turbulence slope (TS), are often abnormal in patients with chronic heart failure (CHF). An abnormal TS and ventricular tachycardia (VT) predict a higher risk of cardiac events in CHF patients.

Area of Science:

  • Cardiology
  • Clinical Electrophysiology
  • Heart Failure Management

Background:

  • Heart rate turbulence (HRT) is a known prognostic marker post-myocardial infarction.
  • Its predictive value in chronic heart failure (CHF) remains less established.
  • This study investigates HRT's role in CHF prognosis.

Purpose of the Study:

  • To evaluate heart rate turbulence (HRT) in patients with chronic heart failure (CHF).
  • To determine the prognostic significance of HRT parameters in this patient group.

Main Methods:

  • 82 patients with CHF and LVEF <35% underwent 24-hour Holter monitoring.
  • Heart rate variability (HRV) and HRT parameters, including turbulence slope (TS) and turbulence onset (TO), were assessed.
  • Clinical course and survival were analyzed over a two-year follow-up.

Main Results:

  • HRT parameters were frequently abnormal in CHF patients.
  • Abnormal turbulence slope (TS <2.5 m/s) and non-sustained ventricular tachycardia (VT) were significant predictors of adverse cardiac events.
  • Significant correlations were found between HRV and HRT parameters.

Conclusions:

  • Heart rate turbulence (HRT) parameters are often abnormal in patients with chronic heart failure (CHF).
  • An abnormal turbulence slope (TS) and episodes of ventricular tachycardia (VT) are significantly associated with an increased risk of cardiac complications in CHF.
Abstract

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