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Description

Bundle branch block (BBB) is a type of heart block that occurs when the electrical signals that control the heart's rhythm are delayed or blocked in the bundle branches, which are two pathways that carry electrical signals from the atrioventricular (AV) node to the ventricles. BBB can cause the ventricles to beat at a slower rate than normal, or it can cause the ventricles to beat out of sync with the atria. BBB is classified as either right bundle branch block (RBBB) or left bundle branch block (LBBB). NOS stands for Not Otherwise Specified, which means that the type of BBB is not specified.

Synonyms

• bundle branch block

Detailed Disease and Condition Information (use the search buttons below to find details on these topics)
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