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Electrocardiography guided left bundle branch pacing.

Shunmuga Sundaram Ponnusamy1, Pugazhendhi Vijayaraman2

  • 1Associate Professor, Department of Cardiology, Velammal Medical College Hospital and Research Institute, Madurai, Tamilnadu, India.

Journal of Electrocardiology
|July 12, 2021
PubMed
Summary
This summary is machine-generated.

Left bundle branch pacing is a new technique using electrocardiology to guide lead placement deep in the septum. This method confirms capture of the left bundle branch (LBB) for effective cardiac pacing.

Keywords:
Anodal captureElectrocardiographyLeft bundle branch pacingRight bundle branch delayTemplate beat

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Cardiac Pacing

Background:

  • Left bundle branch pacing (LBB pacing) is an emerging technique for cardiac rhythm management.
  • It involves direct capture of the left bundle branch (LBB) by positioning an electrode deep within the proximal septum.

Purpose of the Study:

  • To describe the role of electrocardiography (ECG) in LBB pacing.
  • To outline the technique for lead deployment and confirmation of LBB capture.

Main Methods:

  • Utilizing ECG to identify the target septal site for lead placement.
  • Deploying the lead 1-1.5 cm below the His bundle, guided by specific ECG signals.
  • Employing premature ventricular complexes (PVCs) during deployment to locate the LBB area.
  • Applying ECG criteria to confirm successful conduction system capture.

Main Results:

  • ECG is crucial for site identification, lead deployment monitoring, and confirming LBB capture.
  • Lead placement strategy involves specific anatomical and electrical guidance.
  • PVCs serve as an indicator for reaching the LBB region.
  • Established ECG criteria aid in verifying successful conduction system pacing.

Conclusions:

  • LBB pacing is a novel modality requiring precise ECG guidance.
  • The described technique and ECG criteria facilitate successful LBB capture.
  • Further randomized trials are needed to confirm the long-term safety and efficacy of LBB pacing.