Left bundle branch block (LBBB) occurs when something blocks or disrupts the electrical impulse that causes your heart to beat. This block leads to an abnormal heart rhythm.

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 …

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 …

Sep 3, 2025 · Left bundle branch block (LBBB) occurs when cardiac electrical impulses cannot follow a typical pathway to regulate heart rhythm. It can be a sign of underlying heart disease. Most people …

Jun 19, 2025 · Left Bundle Branch Block If your cardiologist spots LBBB on an EKG, they may run tests to figure out the cause. Unlike RBBB, left bundle blocks are more often a sign of tissue damage.

Left bundle branch block affects the heart’s electrical conduction system. When you have left bundle branch block, the left branch of this conducting system is partially or completely blocked.

Dec 18, 2025 · Left Bundle Branch Block (LBBB) is a condition that affects the heart's electrical conduction system, specifically the left bundle branch of the heart. This condition can have significant …

Oct 5, 2024 · Left bundle branch block (LBBB) is a cardiac conduction disorder that affects the left bundle branch of the heart's conduction system, leading to delayed or abnormal electrical impulses …

Mar 1, 2024 · In LBBB, a delay or blockage occurs on the left bundle branch that causes a delay in the left ventricle’s beat. Electrical impulses still reach the left ventricle by branching into the right bundle …

Left bundle branch block (LBBB) is a conduction abnormality in the heart that can be seen on an electrocardiogram (ECG). [1] In this condition, activation of the left ventricle of the heart is delayed, …