Bilateral Bundle Branch Block.
Jasen L Gilge1, Benzy J Padanilam1
1St Vincent Hospital, 8333 Naab Road, Suite 400, Indianapolis, IN 46260, USA.
Cardiology Clinics
|June 15, 2023
Summary
Bilateral bundle branch block (BBBB) is an uncommon heart condition combining features of left and right bundle branch blocks. This underrecognized disorder may increase cardiovascular risks and benefit from cardiac resynchronization therapy.
Area of Science:
- Cardiology
- Electrophysiology
- Cardiac Conduction
Background:
- Left bundle branch block (LBBB) and right bundle branch block (RBBB) are well-established conduction abnormalities.
- A less common, underrecognized condition, bilateral bundle branch block (BBBB), may present with features of both LBBB and RBBB.
Purpose of the Study:
- To describe the characteristics and potential implications of bilateral bundle branch block (BBBB).
- To investigate the association of BBBB with adverse cardiovascular events and response to therapy.
Main Methods:
- Analysis of electrocardiographic (ECG) patterns to identify BBBB.
- Review of clinical data for patients with identified BBBB.
Main Results:
- Bilateral bundle branch block (BBBB) is characterized by an RBBB pattern in lead V1 and an LBBB pattern in leads I and aVL.
- This unique conduction disorder is associated with an increased risk of adverse cardiovascular events.
Conclusions:
- Bilateral bundle branch block (BBBB) represents a distinct entity within bundle branch conduction disorders.
- Patients with BBBB may represent a specific subgroup that could benefit from cardiac resynchronization therapy.
Keywords:
Bilateral bundle branch blockBundle branch blockConduction system disorderLeft bundle branch blockRight bundle branch blockMore Related Videos
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