Dear Doctor K: I recently had an ECG that showed that I have a “left bundle branch block.” What does this mean? Dear Reader: When your heart beats, it does so in response to electrical signals. Your ...

LBBB is linked to electrical abnormalities, causing inefficient heart pumping, dilation, and systolic dysfunction. The study found LBBB associated with increased heart failure risk, surpassing other ...

The QRSs are wider than and different from other QRSs, raising a possibility of PVC. But they are clearly preceded by a prematurely occurring P wave and so are PAC with aberrant conduction. Aberrant ...

Please provide your email address to receive an email when new articles are posted on . Left bundle branch pacing was achieved for the first time via leadless pacemaker. Implantation failure rate was ...