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Related Experiment Videos

Biventricular pacing--early experience.

R Pires1, L Elvas, P Monteiro

  • 1Serviço de Cardiologia dos Hospitais da Universidade de Coimbra.

Revista Portuguesa De Cardiologia : Orgao Oficial Da Sociedade Portuguesa De Cardiologia = Portuguese Journal of Cardiology : an Official Journal of the Portuguese Society of Cardiology
|February 28, 2002
PubMed
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Biventricular pacing improved clinical status in patients with advanced chronic heart failure (CHF) and prolonged QRS duration. This cardiac resynchronization therapy (CRT) demonstrated benefits in quality of life and functional class.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Heart Failure Management

Background:

  • Biventricular pacing is an established therapy for chronic heart failure (CHF).
  • It aims to improve symptoms and exercise tolerance in patients with advanced CHF and prolonged QRS duration.

Purpose of the Study:

  • To evaluate the clinical experience with biventricular pacing in severe CHF management.
  • Assess the efficacy and safety of transvenous biventricular pacing system implantation.

Main Methods:

  • Eight patients with dilated cardiomyopathy and left bundle branch block (LBBB) underwent biventricular pacing implantation.
  • Patients had advanced CHF (NYHA class III/IV) despite optimal medical therapy.
  • Quality of life and QRS duration were assessed pre- and post-implantation.

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Main Results:

  • Implantation success rate was 75%, with two cases failing due to complications.
  • Post-implantation, QRS duration significantly decreased.
  • A notable improvement in quality of life index and functional class was observed in surviving patients.

Conclusions:

  • Biventricular pacing is beneficial for patients with advanced CHF and widened QRS duration.
  • The therapy leads to evident improvements in clinical status and quality of life.