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Related Experiment Video

Updated: Jun 28, 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

Optimization of cardiac resynchronization therapy.

Amit Bhan1, Stamatis Kapetanakis, Mark J Monaghan

  • 1Department of Echocardiography, Kings College Hospital, Denmark Hill, London, UK.

Echocardiography (Mount Kisco, N.Y.)
|November 7, 2008
PubMed
Summary
This summary is machine-generated.

Cardiac resynchronization therapy (CRT) benefits many patients with left ventricular (LV) systolic dysfunction. Research is ongoing to optimize CRT device settings, like atrioventricular (AV) and ventricular-to-ventricular (VV) delays, to improve patient outcomes.

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Area of Science:

  • Cardiology
  • Biomedical Engineering

Background:

  • Cardiac resynchronization therapy (CRT) is a standard treatment for left ventricular (LV) systolic dysfunction.
  • A significant portion of patients do not respond optimally to CRT, necessitating further research.

Purpose of the Study:

  • To investigate the impact of optimizing atrioventricular (AV) and ventricular-to-ventricular (VV) delays in CRT devices.
  • To explore methods for improving patient response to CRT through device parameter optimization.

Main Methods:

  • Review of contemporary CRT devices with adjustable AV and VV delays.
  • Analysis of existing evidence on the hemodynamic effects of optimizing these delays.
  • Assessment of current clinical practice regarding delay optimization.

Main Results:

  • Optimization of AV and VV delays can positively influence patient hemodynamics.
  • Multiple strategies exist for delay optimization, lacking widespread clinical consensus.
  • Current clinical practice for incorporating delay optimization into patient management is inconsistent.

Conclusions:

  • Further research is needed to establish standardized protocols for AV and VV delay optimization in CRT.
  • Optimizing device delays holds potential for improving CRT efficacy in non-responders.
  • Consensus on best practices for CRT delay optimization is crucial for widespread clinical adoption.