However, Sgarbossa et al described in 1996 some ECG changes seen in patients with LBBB and concomitant MIs ... ST segment elevation > 1 mm and in the same direction (concordant) with the QRS ...

However, unlike in the presence of a left bundle branch block, myocardial ischemia and infarction can easily be detected on ECG when a RBBB is present. Below is an ECG displaying a right bundle ...

1 The majority of disorders associated with increased risk of sudden cardiac death (SCD), such as cardiomyopathies and primary electrical diseases, are suggested by abnormal findings present on an ECG ...