Left bundle branch block
Left Bundle Branch Block
Left Bundle Branch Block (LBBB) is a condition in which there's a delay or obstruction along the pathway that electrical impulses travel to make your heart beat. The delay or blockage occurs on the pathway that sends signals to the left side of your heart.
Pronunciation
Lef-t Bun-dle Branch Blok
Etymology
The term "Left Bundle Branch Block" is derived from the anatomical location and nature of the condition. The "left bundle branch" is a part of the heart's electrical conduction system, and "block" refers to the interruption or delay in the electrical signal.
Related Terms
- Bundle Branch Block: A broader term for blockages that can occur in either the left or right bundle branches.
- Right Bundle Branch Block: A similar condition, but the delay or blockage occurs on the pathway that sends signals to the right side of the heart.
- Electrocardiogram: A test that measures the electrical activity of the heartbeat, often used to diagnose LBBB.
- Cardiac Conduction System: The electrical system of the heart, which includes the bundle branches.
Symptoms
In many cases, a Left Bundle Branch Block doesn't cause noticeable symptoms. However, it can lead to other cardiac conditions that do have symptoms, such as Heart Failure or Cardiomyopathy.
Causes
The most common cause of LBBB is underlying heart disease, such as Coronary Artery Disease or Hypertension. Other causes can include heart valve disease, Cardiomyopathy, and aging.
Diagnosis
Diagnosis of LBBB is typically made through an Electrocardiogram (ECG), which can show the characteristic changes in the heart's electrical activity that indicate a bundle branch block.
Treatment
Treatment for LBBB focuses on managing the underlying condition causing the block. This can include medication, lifestyle changes, or in some cases, the implantation of a Pacemaker.
External links
- Medical encyclopedia article on Left bundle branch block
- Wikipedia's article - Left bundle branch block
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