Basics of Bundle Branch Block

Basics of Bundle Branch Block

Bundle branch block is a condition in which there is a delay or blockage along the pathway, which makes it hard for your heart to pump blood efficiently through your body.

In most cases, bundle branch block causes no symptoms, but the symptoms you may experience often include syncope or fainting and presyncope.


The causes for bundle branch block vary from different affected locations (right bundle or left bundle). Common symptoms usually include:

  • Myocardial infarction
  • Myocarditis
  • High blood pressure
  • Cardiomyopathy
  • Pulmonary hypertension
  • Pulmonary embolism


Right bundle branch block may not need full evaluation, but left bundle branch block needs a full evaluation. Tests used to diagnose bundle branch block include:

  • Echocardiogram: It uses sound waves.
  • Electrocardiogram: It uses wires to attach to the skin of your chest or other places.


According to the symptoms patients present, or certain heart problems, the treatments for bundle branch block are as follows:

Implant it under the skin of upper chest, and it will provide electrical impulses to keep your heart beating regularly.

Cardiac Resynchronization Therapy
It also known as biventricular pacing, and it can keep both lower chambers of the heart in proper rhythm.

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* The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.