Left Anterior Fascicular Block (LAFB)In left anterior fascicular block (LAFB), impulses are conducted to the left ventricle via the posterior fascicle, producing characteristic ECG changesJohn Larkin and Robert ButtnerFebruary 5, 2021
Trifascicular BlockTrifascicular block (TFB) refers to the presence of conducting disease in all three fascicles: RBBB, LAFB, LPFB. LITFL ECG LibraryRobert Buttner and John LarkinJanuary 5, 2021
Bifascicular BlockBifascicular block is the combination of RBBB with either LAFB or LPFB. Conduction to the ventricles is via the single remaining fascicle.Ed Burns and Robert ButtnerDecember 1, 2020