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Bifascicular block

Conduction abnormality in the heart

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  • 3 chapters

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The European Society of Cardiology (ESC) suggests using electrophysiology studies for diagnostic purposes (EPS). When pharmacologic stress or incremental atrial pacing induces high-degree atrioventricular block, a permanent pacemaker (PPM) is recommended. If EPS is negative, long-term rhythm monitoring with an implantable loop recorder (ILR) is advised.

Most commonly, it refers to a combination of right bundle branch block (RBBB) and either left anterior fascicular block (LAFB) or left posterior fascicular block (LPFB), with the former being more common.

Signs and symptoms

Patients who suffer from bifascicular block are more likely to experience syncope and unexpected death.

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