Is a left bundle branch block a serious condition?

Left bundle branch block (LBBB) may not be serious if you do not have any underlying heart conditions. Many people with LBBB have no symptoms, and some don’t require any treatment at all. However, whether or not you have symptoms, LBBB requires careful medical assessment.

What is LBBB of the heart?

Left bundle branch block (LBBB) is a blockage of electrical impulses to the heart’s left ventricle. This is the lower-left portion of the heart.

What is the meaning of LBBB?

Continuing Education Activity. Left bundle branch block (LBBB) is a common electrocardiographic (ECG) abnormality seen in patients whose normal cardiac conduction down both anterior and posterior left fascicles of the His-Purkinje system is compromised.

How do you know if you have a bundle branch block?

A simple way to diagnose a left bundle branch in an ECG with a widened QRS complex (> 120 ms) would be to look at lead V1. If the QRS complex is widened and downwardly deflected in lead V1, a left bundle branch block is present.

Is a right or left bundle branch block worse?

This prospective study demonstrated that men with left bundle branch block showed both a much higher risk for developing high degree atrioventricular block and a markedly higher hazard ratio for all-cause mortality than individuals with right bundle branch block.

What’s the difference between RBBB and LBBB ECGs?

These ECGs show the difference between normal conduction, left bundle branch block (LBBB) and right bundle branch block (RBBB).

What does left bundle branch block ( LBBB ) mean?

From Wikipedia, the free encyclopedia Left bundle branch block (LBBB) is a cardiac conduction abnormality seen on the electrocardiogram (ECG). In this condition, activation of the left ventricle of the heart is delayed, which causes the left ventricle to contract later than the right ventricle.

Are there any signs or symptoms of LBBB?

LBBB itself is asymptomatic, there are no signs or symptoms other than the distinct pattern on EKG.  

How are right ventricular paced rhythms similar to LBBB?

Right ventricular paced rhythms will produce a similiar morphology, as impulse conductions originate from the RV and travel across the septum to the LV as is the case in LBBB. Pacing spikes will be present. The same concepts regarding appropriate discordance apply.