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  1. Bundle branch block - Symptoms & causes - Mayo Clinic

    Jun 11, 2022 · Bundle branch block is a condition in which there's a delay or blockage along the pathway that electrical impulses travel to make the heart beat. It sometimes makes it harder for the …

  2. Bundle Branch Block: What to Know - WebMD

    Jun 19, 2025 · If you have a bundle branch block, it may cause a glitch in the electrical impulses that make your heart beat.

  3. Heart Conduction Disorders | American Heart Association

    Sep 24, 2024 · Normally, electrical impulses travel down the right and left bundle branches of the ventricles at the same speed. This allows both ventricles to contract at the same time. But when …

  4. Bundle Branch Block - Heart and Blood Vessel Disorders - Merck …

    Bundle branch block is a type of conduction block involving partial or complete interruption of the flow of electrical impulses through the right or left bundle branches.

  5. Bundle Branch Block - Cedars-Sinai

    A bundle branch block is either a complete or a partial interruption of the electrical pathways inside the wall of the heart between the two lower chambers (ventricles).

  6. Bundle Branch Block | Cardiology | Mercy Health

    What is bundle branch block? Bundle Branch Block (BBB) is a condition where there is a delay or blockage in the electrical pathways (bundle branches) that carry signals to the left or right side of the …

  7. Bundle Branch Blocks - My EKG

    Mar 17, 2025 · Bundle branch blocks are disorders of electrical conduction distal to the bifurcation of the His bundle, causing changes in the depolarization of the ventricles. This disturbance in ventricular …

  8. What Is a Bundle Branch Block and What Causes It?

    Aug 21, 2025 · A bundle branch block is a condition affecting the heart’s internal electrical wiring system. It represents an issue with the electrical signals that coordinate the heart’s pumping action, rather …

  9. Bundle Branch Block: Causes, Symptoms & Treatment

    What is a bundle branch block? A bundle branch block (BBB) is when something blocks or disrupts the electrical signal that causes your heart to beat. This block leads to an abnormal heart rhythm.

  10. Left Bundle Branch Block (LBBB) • LITFL • ECG Library Diagnosis

    Oct 8, 2024 · New LBBB in the context of chest pain was once considered a “STEMI-equivalent” and part of the criteria for thrombolysis. However, more up-to-date data suggests that chest pain patients …