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Bifascicular block
- Right bundle branch block (RBBB) + left anterior fascicular block (LAFB)
- RBBB + left posterior fascicular block (LPFB)
- Complete left bundle branch block (LBBB)
Incomplete Trifascicular block
- Bifascicular block w/1st degree AV block *classically referred to as “trifascicular block”*
- Bifascicular block w/2nd degree AV block
- Alternating LBBB + RBBB
Complete Trifascicular block
- Bifascicular block w/3rd degree AV block
References
- Surawicz B, Knilans T. Chou’s Electrocardiography in Clinical Practice (6th edition), Saunders 2008.
- Wagner, GS. Marriott’s Practical Electrocardiography (11th edition), Lippincott Williams & Wilkins 2007.
- Levis J, Garmel G. Clinical Emergency Medicine Casebook, Cambridge University Press 2009.