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Related Experiment Videos

Multisite pacing for end-stage heart failure: early experience

S Cazeau1, P Ritter, A Lazarus

  • 1Centre Chirurgical du Val d'Or, Saint-Cloud, France.

Pacing and Clinical Electrophysiology : PACE
|November 1, 1996
PubMed
Summary

Multisite ventricular pacing significantly improved hemodynamics in severe congestive heart failure (CHF) patients. Surviving patients showed sustained clinical improvement, highlighting pacing

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Area of Science:

  • Cardiology
  • Biomedical Engineering

Background:

  • Severe congestive heart failure (CHF) patients often have impaired hemodynamics.
  • Previous studies on dual-chamber pacing in CHF show conflicting results.
  • Ventricular desynchronization may negatively impact cardiac function.

Purpose of the Study:

  • To assess the hemodynamic benefits of synchronous biventricular pacing in end-stage CHF patients.
  • To evaluate the impact of multisite pacing on cardiac index and filling pressures.

Main Methods:

  • Eight end-stage CHF patients underwent invasive hemodynamic evaluation with temporary pacing leads.
  • Pacing configurations included RV apex, RV outflow tract, and biventricular pacing.
  • Pacemakers were adjusted or implanted for optimized biventricular pacing, atrial-triggered in sinus rhythm.

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Main Results:

  • Biventricular pacing increased mean cardiac index (CI) by 25% (P < 0.006).
  • Mean V wave decreased by 26% (P < 0.004), and pulmonary capillary wedge pressure decreased by 17% (P < 0.01).
  • Four of eight patients survived and improved from NYHA Class IV to II; CI decreased 15% when pacing was turned off.

Conclusions:

  • Multisite ventricular pacing can lead to rapid and sustained hemodynamic improvement in severe CHF.
  • Synchronous biventricular pacing offers a potential therapeutic strategy for end-stage heart failure.
  • Further research is warranted to optimize multisite pacing in heart failure management.