This post reviews RBBB, LBBB, LAFB and LPFB.
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The presence of a LBBB makes the diagnosis of an acute MI challenging. We review the topic here in an effort to shed light on this area.
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It has been recognized since the 1940s that the presence of a Left Bundle Branch Block (LBBB) obscures the EKG diagnosis of myocardial infarction (MI). The publication of the Sgarbossa criteria in 1996 aided in clarifying this issue.
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