Toggle light / dark theme

First- and second-degree left bundle branch block and masquerading bundle branch block: Lessons learned during conduction system pacing

The classic definitions of bundle branch and fascicular block have been established without consideration if conduction block is complete or incomplete (conduction delay). Current electrocardiographic (ECG) definitions cannot distinguish pronounced conduction delay (first-degree block) from complete conduction block. We are presenting here 2 cases of first-degree left bundle branch block (LBBB) that may be relevant when interpreting findings and observations during conduction system pacing.

Leave a Comment

Lifeboat Foundation respects your privacy! Your email address will not be published.