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Bilateral Bundle Branch Block.

PMID: 34689895 (view PubMed database entry)
DOI: 10.1016/j.ccep.2021.06.008 (read at publisher's website )

Jasen L Gilge, Benzy J Padanilam,

Left bundle branch block (LBBB) and right bundle branch block (RBBB) are classic manifestations of bundle branch conduction disorders. However, a third form that is uncommon and underrecognized may exist that has features and pathophysiology of both: bilateral bundle branch block (BBBB). This unusual form of bundle branch block exhibits an RBBB pattern in lead V1 (terminal R wave) and an LBBB pattern in leads I and aVL (absence of S wave). This unique conduction disorder may confer an increased risk of adverse cardiovascular events. BBBB patients may be a subset of patients that respond well to cardiac resynchronization therapy.

Card Electrophysiol Clin (Cardiac electrophysiology clinics)
[2021, 13(4):685-689]

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