Three simple criteria in the diagnosis of myocardial infarction in the presence of left bundle-branch block: A two-year retrospective study at OMMC

The three criteria tested above either alone or in combination are highly specific markers of infarction that may help physicians rapidly diagnose and treat acute infarction in patients with left bundle-branch block. However, with these findings, conformation with enzyme studies is still required. There was no attempt to distinguish between previous and newly developed LBBB. Nonetheless, these criteria probably apply to both old and new LBBB. (Conclusions)