The Importance of Large First Septal Branches in the Primary PCI of Anterior Myocardial Infarctions - Abstract
New RBBB or bifascicular block development in acute anterior myocardial infarction (AnMI)
is a poor prognostic sign [1]. This is because of the left anterior descending artery (LAD) occlusion before or at the level of the first large septal branch (S1), so the infarction area is large and the risk of complete atrioventicular block (CAVB) is high. In this case report, a patient with AnMI who had a worsening clinical course because of the development of CAVB with a larger infarct area probably due to occlusion of S1 after primary PCI is presented.