Normally, electrical impulses travel down the right and left branches of the ventricles at the same speed. This allows both ventricles to contract simultaneously.But when there’s a “block” in one of the branches, electrical signals have to take a different path through the ventricle. This detour means that one ventricle contracts a fraction of a second slower than the other, causing an arrhythmia.
Often, no treatment is required for bundle branch block.But it’s still important to have regular checkups. Your doctor will want to monitor your condition to make sure that no other changes occur.
A person with bundle branch block may experience no symptoms, especially in the absence of any other problems.In such cases, bundle branch block is usually first identified by testing for some other reason, such as a routine physical. An electrocardiogram (EKG or ECG) reveals bundle branch block when it measures the heart’s electrical impulses.