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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

[Characterization of hyper-responder patients to cardiac resynchronization therapy]

Ana Rodríguez-Almodóvar1, Dolores Mesa Rubio, Carmen Durán Torralba

  • 1Unidad de Cardiología, Hospital Infanta Cristina, Parla, Madrid, España. anarodriguezal@yahoo.es

Medicina Clinica
|March 19, 2011
PubMed

Insights

Hyper-responders to cardiac resynchronization therapy (CRT) are often women with less dilated left ventricles and reduced mitral regurgitation. These findings aid in understanding patient responses to CRT.

Area of Science:

  • Cardiology
  • Medical Devices
  • Echocardiography

Background:

  • Cardiac resynchronization therapy (CRT) is a treatment for heart failure.
  • Identifying patient subgroups that respond best to CRT is crucial for optimizing outcomes.
  • Hyper-responders to CRT exhibit superior improvements in left ventricular function.

Purpose of the Study:

  • To compare clinical and echocardiographic features of CRT hyper-responders with non-responders.
  • To identify predictors of hyper-response to CRT.

Main Methods:

  • Retrospective analysis of 80 consecutive patients undergoing CRT.
  • Hyper-responders defined as achieving a left ventricular ejection fraction (LVEF) ≥ 50% post-CRT.
  • Echocardiographic parameters including left ventricle dimensions and mitral regurgitation area were assessed.

Main Results:

  • 15% of patients (12/80) were classified as hyper-responders.
  • Hyper-responders had similar baseline characteristics but fewer males compared to non-responders.
  • Hyper-responders showed significantly smaller basal left ventricle diastolic and systolic diameters and reduced mitral regurgitation area (p < 0.05).

Conclusions:

  • Hyper-responders to CRT are characterized by specific echocardiographic findings.
  • These include a less dilated left ventricle and less severe mitral regurgitation.
  • Patient sex may also play a role in CRT hyper-response.
Abstract

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