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Related Experiment Videos

[Paced right bundle branch block: what to do?].

R Nkoulou1, O Beauchet, J J Perrenoud

  • 1Service de cardiologie, HUG, 1211 Genève. nkoulou-rene@diogenes.hcuge.ch

Revue Medicale Suisse
|December 13, 2007
PubMed
Summary
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Right ventricular pacing typically causes Left Bundle Branch Block (LBBB). However, a Paced Right Bundle Branch Block (RBBB) can occur with correctly placed leads, requiring careful diagnosis to avoid unnecessary interventions.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Device Technology

Background:

  • Right ventricular (RV) pacing is a common cardiac intervention.
  • The expected electrocardiogram (ECG) finding for RV pacing is Left Bundle Branch Block (LBBB).
  • A Paced Right Bundle Branch Block (RBBB) pattern often suggests RV lead malposition.

Observation:

  • This case report details two patients presenting with a Paced RBBB pattern.
  • Both patients had confirmed well-placed RV leads via chest X-ray and echocardiography.
  • This challenges the typical assumption that RBBB indicates lead malposition.

Findings:

  • A Paced RBBB can manifest even with optimal RV lead placement.
  • Differential diagnosis is crucial to distinguish true malposition from atypical conduction patterns.

Related Experiment Videos

  • Identifying the cause of atypical RBBB is essential for patient management.

    • Implications:

    • Misinterpreting a Paced RBBB can lead to unnecessary interventions such as anticoagulation or lead replacement.
    • Accurate diagnosis prevents complications associated with lead malposition and inappropriate treatment.
    • Understanding these atypical ECG patterns improves patient care in cardiac pacing.