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Related Experiment Video

Updated: Jul 13, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
12:45

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Published on: December 11, 2017

Ventricular resynchronization: comparing biventricular and bifocal right ventricular pacemakers.

Eduardo Arrais Rocha1, Tatiana Pereira Gondim, Sebastião Abreu

  • 1Hospital das Clínicas da Universidade Federal do Ceará, Fortaleza, CE, Brazil. eduardoa@cardiol.br

Arquivos Brasileiros De Cardiologia
|August 1, 2007
PubMed
Summary

Cardiac resynchronization therapy using biventricular pacing (BV) and bifocal right ventricular pacing (BF) showed benefits. Biventricular pacing demonstrated more significant improvements in heart failure patients.

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Last Updated: Jul 13, 2026

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Area of Science:

  • Cardiology
  • Biomedical Engineering

Background:

  • Cardiac resynchronization therapy (CRT) is vital for heart failure management.
  • Multisite pacing aims to improve ventricular synchrony.

Purpose of the Study:

  • To compare conventional biventricular pacing (BV) with bifocal right ventricular pacing (BF).
  • To evaluate clinical, functional, and echocardiographic outcomes in heart failure patients.

Main Methods:

  • Prospective non-randomized analysis of 36 patients with heart failure and wide QRS.
  • Inclusion of patients without major exclusion criteria from key studies.

Main Results:

  • Both BV and BF pacing yielded favorable resynchronization results.
  • Biventricular pacing showed greater QRS narrowing and a trend towards fewer hospital admissions.
  • Significant improvements were observed in the biventricular group compared to baseline.

Conclusions:

  • Cardiac resynchronization therapy is effective for both pacing techniques.
  • Biventricular pacing demonstrated more pronounced positive outcomes in this patient cohort.