Left bundle branch block (LBBB) is a type heart block. It results from a problem with the electrical conduction system that enables the heart to beat. It may cause no symptoms, but an ...

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.

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 ...

First-degree heart block is the mildest type and often requires no treatment. Third-degree heart block is the most severe and ...

Please provide your email address to receive an email when new articles are posted on . Although typically a benign finding, right bundle branch block may be associated with increased risk for low ...