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Related Experiment Videos

[Patient selection for biventricular pacing].

S Garrigue1

  • 1Service d'électrophysiologie et de stimulation cardiaque, hôpital cardiologique du Haut-Lévêque, avenue de Magellan, 33604 Pessac cedex, France. stephane.garrigue@chu-bordeaux.fr

Annales De Cardiologie Et D'Angeiologie
|February 11, 2005
PubMed
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Biventricular pacing improves heart failure outcomes, but patient selection needs more than QRS width. Electromechanical analysis, focusing on intra-left ventricular asynchrony, is key for identifying responders to cardiac resynchronization therapy.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Biomedical Engineering

Context:

  • Biventricular pacing (BVP) is established for heart failure (HF) patients with wide QRS.
  • However, a subset of patients with wide QRS do not respond to BVP.
  • Current selection criteria may be insufficient, necessitating advanced assessment.

Purpose:

  • To explore the limitations of electrical parameters (QRS width) in predicting BVP response.
  • To highlight the importance of electromechanical coupling and intra-left ventricular asynchrony.
  • To investigate the role of left ventricular pacing site in BVP efficacy.

Summary:

  • While wide QRS indicates potential for BVP, intra-left ventricular asynchrony is a more critical predictor of response.
  • BVP can benefit even narrow QRS patients if significant intra-left ventricular asynchrony exists.

Related Experiment Videos

  • The location of the left ventricular pacing lead is crucial; suboptimal placement can induce detrimental asynchrony.

    • Impact:

    • Shifts focus from purely electrical to electromechanical criteria for BVP patient selection.
    • Suggests Tissue Doppler imaging and other non-invasive tools are vital for optimizing BVP outcomes.
    • Underscores the need for further research into optimal LV lead placement to maximize BVP benefits.