Related Experiment Video

Updated: Jan 27, 2026

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

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Intermittent left bundle branch block: What is the mechanism?

Gaurav A Upadhyay1, Roderick Tung1

  • 1Department of Medicine, Section of Cardiology, Center for Arrhythmia Care, Pritzker School of Medicine, The University of Chicago Medicine, Chicago, Illinois.

Journal of Cardiovascular Electrophysiology
|March 26, 2019
PubMed

Insights

This study details a patient with intermittent left bundle branch block (LBBB), revealing the precise location and nature of conduction block. Findings offer new insights into the mechanisms underlying LBBB.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Cardiac Anatomy

Background:

  • Left bundle branch block (LBBB) is a common cardiac arrhythmia.
  • Understanding LBBB mechanisms is crucial for patient management.
  • Electrophysiological studies are key to diagnosing conduction abnormalities.

Observation:

  • A case of intermittent left bundle branch block (LBBB) was investigated.
  • Detailed multielectrode recordings were obtained from the right and left septum.
  • The study focused on elucidating the specific site of conduction delay.

Findings:

  • The electrophysiological study precisely identified the location of the conduction block.
  • Multielectrode recordings provided detailed mapping of septal electrical activity.
  • The findings illuminate the specific anatomical substrate responsible for intermittent LBBB.

Implications:

  • This case enhances understanding of LBBB pathophysiology.
  • It provides a basis for improved diagnostic strategies for conduction disorders.
  • Further research into septal conduction can refine LBBB treatment approaches.

Keywords:
ECGintrahisian blockleft bundle branch blockleft ventricular mapping

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