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 (see anterior and inferior wall MI examples).

Approximately 50% of left bundle branch blocks are associated with structural heart disease, while the other half are idiopathic or due to fibrosis of the cardiac conduction system which occurs ...

Abbott has completed the first-in-human procedures for leadless left bundle branch area pacing (LBBAP) using its AVEIR conduction system pacing (CSP) leadless pacemaker system. The investigational ...

The QRS rate for junctional rhythms is typically less than 100 beats/min, and the QRS complex usually narrow unless the baseline QRS has a bundle branch block. Sinus rhythm resumes with increased ...