2024年10月8日 · Is it right that in BBB normally T waves should be oriented opposite to the QRS terminal forces? What happens if this doesn’t happen – e.g. negative terminal forces and inverted T waves or positive terminal forces and upright T waves?

A bundle branch block (BBB) is a block of the right or the left bundle branches that propagate depolarizations from the Sino-Atrial node to and through the ventricles. The signal is conducted first through the healthy branch, and then it is distributed to the damaged side.

Left bundle branch block (LBBB) results from anatomical or functional impairment of the left bundle branch (LBB), leading to a blockage of electrical impulse conduction through this bundle. Consequently, depolarization of the left ventricle is achieved by …

2022年7月23日 · An overview of left and right bundle branch block (BBB) including pathophysiology and how to identify BBC on an ECG using WiLliaM and MarRoW.

2017年3月10日 · In right bundle branch block (RBBB) the right ventricle is not directly activated by impulses travelling through the right bundle branch. The left ventricle, however, is still activated as normal by the left bundle branch.

Bundle branch block occurs when the electrical signals that regulate the heart’s contractions experience a delay or blockage. This disruption in conduction can have a significant impact on the synchronization of the heart’s ventricles and can lead to abnormal findings on an electrocardiogram (EKG).

2013年11月1日 · The left bundle actually has an anterior and a posterior fascicle. This changes the morphology and the axis of the ECG. I will try and go through this to help simplify the ECG as we did with LBBB and RBBB.

Bundle Branch Block ECG Characteristics. Notched or slurred in chest leads. Incomplete BBB denotes a slow in conduction through the bundle branches, so presents with a QRS <0.12s. ICBBB is a common and normal variant in children. Right Bundle Branch Block. Left Bundle Branch Block. LBBB Pathophysiology. Hemiblocks. Left Anterior. Left Posterior.

Bundle branch block, especially left bundle branch block, can lead to cardiac dyssynchrony. The simultaneous occurrence of left and right bundle branch block leads to total AV block. Image showing the ECG characteristics of a right bundle branch block and a left bundle branch block.

2018年6月20日 · Right Bundle Branch Block (RBBB) Physiology. In a RBBB, the right bundle does not activate. The right ventricle is instead depolarized by spread of impulse from the left bundle, through the left ventricle (LV) and then to the RV. RBBB Criteria.