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Dysrhythmias refers to abnormalities in the heart's rhythm. They result from disruptions in the heart's electrical conduction system, which includes the sinoatrial(SA)node, atrioventricular(AV) node, the bundle of His, bundle branches, and Purkinje fibers.Definition and PathophysiologyDysrhythmias result from disorders of impulse formation, impulse conduction, or both. The heart contains specialized cells in the sinoatrial node, atrioventricular node, and the bundle of His and Purkinje fibers...
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Related Experiment Video

Updated: Nov 7, 2025

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

Parikshit S Sharma1, Pugazhendhi Vijayaraman2

  • 1Rush University Medical Center, Chicago, IL, US.

Arrhythmia & Electrophysiology Review
|May 3, 2021
PubMed
Summary
This summary is machine-generated.

Conduction system pacing (CSP) offers a new way to treat heart failure by improving heart rhythm. This technique helps resynchronize the heart in patients with reduced ejection fraction and dyssynchrony.

Keywords:
Biventricular pacingHis bundle pacingcardiac resynchronisation therapyconduction system pacingheart failureleft bundle branch blockleft bundle branch pacingright bundle branch blockventricular dyssynchrony

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Cardiac Pacing

Background:

  • Conduction system pacing (CSP) involves implanting leads in the cardiac conduction system, including His bundle and left bundle branch pacing.
  • Emerging evidence suggests CSP's role in cardiac resynchronization therapy (CRT).

Purpose of the Study:

  • To review strategies utilizing CSP for cardiac resynchronization.
  • To analyze available data on CSP's efficacy in overcoming inter-ventricular dyssynchrony.

Main Methods:

  • Review of current literature and clinical data on conduction system pacing techniques.
  • Analysis of studies investigating CSP for cardiac resynchronization in heart failure patients.

Main Results:

  • CSP techniques, such as His bundle pacing and left bundle branch pacing, are being explored for CRT.
  • CSP shows potential in improving cardiac synchrony and function in specific patient populations.

Conclusions:

  • Conduction system pacing presents a promising alternative for cardiac resynchronization in heart failure with reduced ejection fraction and dyssynchrony.
  • Further research is warranted to fully establish CSP's role and optimize its application in CRT.