A Bundle Branch Block (BBB) is a cardiac condition characterized by an impairment or delay in the electrical conduction through the Bundle of His and its subsequent division into the left and right bundle branches of the heart. These bundle branches are responsible for transmitting electrical signals to the ventricles, which allow them to contract in a coordinated manner and pump blood effectively throughout the body.
In a Bundle Branch Block, one or both of the bundle branches become partially or completely blocked, resulting in a delay or interruption of the electrical signal. This leads to a delayed or abnormal activation of the ventricles, causing asynchronous contraction and potentially disrupting the heart's normal rhythm and efficiency.
There are two main types of Bundle Branch Blocks: right bundle branch block (RBBB) and left bundle branch block (LBBB). RBBB occurs when the electrical conduction is delayed or blocked in the right bundle branch, while LBBB occurs when the left bundle branch is affected.
Bundle Branch Blocks can be congenital (present from birth) or acquired as a result of certain cardiac conditions or diseases such as heart attacks, cardiomyopathies, or high blood pressure. Symptoms may include palpitations, shortness of breath, dizziness, and fatigue. Diagnosis is typically made through electrocardiogram (ECG) testing.
Treatment for Bundle Branch Blocks depends on the underlying cause and severity. In some cases, no treatment is required, while others may benefit from medications to regulate heart rhythm or a pacemaker to maintain proper electrical conduction and restore normal heart function.
