Bundle Branch Block: What to Know
Bundle Branch Block: What to Know In this Article Impulses, or electrical signals, travel through both the left and right chambers of your heart to make it pump. But if the pathway is blocked, the impulses may move slower than normal or irregularly. This is called a bundle branch block. The name comes from the wire-like branch that carries these impulses and splits into left and right bundles. There are two types: Right bundle branch block (RBBB) Left bundle branch block (LBBB) Your risk of having a bundle branch block goes up with age or if you have other health issues.