Bifascicular block

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Bifascicular Block

Bifascicular block (pronunciation: bi-fa-sic-u-lar block) is a condition characterized by blockage of two of the three main fascicles in the heart's conduction system.

Etymology

The term "bifascicular block" is derived from the Latin words "bi", meaning two, and "fasciculus", meaning bundle. It refers to the blockage of two of the three main bundles or fascicles in the heart's conduction system.

Definition

A bifascicular block is a type of conduction disorder that occurs when two of the three main fascicles in the heart's conduction system are blocked. This can lead to a delay or complete blockage of the electrical signals that regulate the heart's rhythm, potentially causing symptoms such as dizziness, fainting, or even sudden cardiac death.

Types

There are three types of bifascicular blocks:

  • Right bundle branch block with left anterior hemiblock
  • Right bundle branch block with left posterior hemiblock
  • Left bundle branch block

Each type is named for the specific fascicles that are blocked.

Symptoms

Symptoms of a bifascicular block can vary depending on the severity of the blockage and the specific fascicles that are affected. Common symptoms may include:

  • Dizziness
  • Fainting
  • Palpitations
  • Shortness of breath
  • Chest pain

Diagnosis

Diagnosis of a bifascicular block typically involves an electrocardiogram (ECG), which can detect abnormalities in the heart's electrical activity. Additional tests may be needed to determine the cause of the blockage and to assess the patient's overall heart function.

Treatment

Treatment for a bifascicular block depends on the severity of the blockage and the patient's symptoms. In some cases, no treatment may be necessary. In other cases, treatment may involve medications to manage symptoms or a pacemaker to regulate the heart's rhythm.

Related Terms

External links

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