Objectives Electrocardiographic bundle branch block (BBB) is common but the prognostic implications in primary care are unclear. We sought to investigate the relationship between electrocardiographic ...

The electrocardiogram revealed a short PR interval and a prolonged QRS complex. Shock therapy was not employed because of an erroneous diagnosis of bundle-branch block.

Abbott's investigational AVEIR™ Conduction System Pacing (CSP) leadless pacemaker system is specifically designed to deliver pacing to the left bundle branch area, activating the heart's natural ...

Just under a quarter had NYHA class III symptoms at baseline. Additionally, 15.7% had a persistent atrial arrhythmia, 70.2% had left bundle-branch block, and 8.4% had right bundle-branch block.

In right bundle branch block, there is a characteristic pattern this widening takes across the 12 leads (or “views”) provided by a standard ECG. So, it's usually easy to determine the presence of ...

Left bundle branch block (LBBB) is a problem where the electrical impulse that controls your heartbeat is not working in the usual way. It is considered an abnormal finding on an electrocardiogram ...

In contrast, patients with right bundle branch block (RBBB) did not appear to derive a benefit from CRT, regardless of QRS duration. The findings, researchers say, have implications for guideline ...

Although randomized CRT trials initially enrolled patients based on QRS duration (≥120 ms) rather than morphology, many clinicians subsequently inferred that CRT was only consistently effective for ...