Bundle Branch Block – Overview
The Bundle branch block is a condition where there is a delay or blockage in the electrical impulses. These travel through the heart’s bundle branches, which are part of the pathways that control heartbeats. This can affect either the right or left bundle branch. Additionally, may alter the way the heart’s lower chambers (ventricles) contract.
The heart’s electrical system coordinates the rhythm and timing of each heartbeat. When a bundle branch is blocked. The signal is slowed or blocked on its way to part of the heart, causing the ventricles to beat out of sync. While some people experience no symptoms, others may feel light-headed, fatigued, or faint.
There are two main types of BBB: Right Bundle Branch Block (RBBB) and Left Bundle Branch Block (LBBB). RBBB is more commonly benign. Often found incidentally on an ECG, while LBBB may indicate underlying heart disease or increase the risk of complications such as heart failure.
Bundle Branch Block
This is more common in older adults, individuals with high blood pressure, heart disease, or previous heart attacks. It can also occur in younger people with no known heart problems.
Although this is not a disease itself. It may be a sign of an existing or developing cardiac issue. Diagnosis is usually made through an electrocardiogram (ECG). Additionally, it may lead to further cardiac testing depending on the type and symptoms.
What Is Bundle Branch Block?
This is a heart rhythm condition where the electrical signals that control the heartbeat are delayed or blocked along the right or left BBB — pathways responsible for guiding signals to the heart’s lower chambers (ventricles). This disruption can affect how efficiently the ventricles contract. Right BBB (RBBB) is often harmless and may be discovered during routine ECG testing, whereas Left BBB (LBBB) is more likely to signal underlying heart disease and may be associated with an increased risk of heart failure or other complications.
Who Is at Risk?
This is more frequently seen in older adults and in people with high blood pressure, coronary artery disease, or a history of heart attacks. However, it can also appear in younger individuals without known heart conditions. Some people may not experience any symptoms, while others might notice fatigue, dizziness, or fainting. Although not a disease itself, BBB can be a marker of other cardiac issues. It is typically diagnosed using an electrocardiogram (ECG), and depending on findings, further tests may be done to assess heart function and potential risks.
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