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 · Left Bundle Branch Block LBBB - normal direction of septal depolarisation is reversed (becomes right to left), as the impulse spreads

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 …

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, …

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.

When you have left bundle branch block, the left branch of this conducting system is partially or completely blocked. This causes the left ventricle to contract a little later than it should.

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 …

Learn about left bundle branch block (LBBB), with emphasis on ECG criteria, differential diagnoses, causes, management and diagnosis of ischemia/infarction.

Conduction may be blocked in the left or right bundle branch. The left bundle branch further divides into 2 branches, called the anterior and posterior fascicles. If conduction is blocked through one of these …