Published: May 5, 2026
Updated: September 21, 2026
Bundle Branch

What Is a Bundle Branch?

A bundle branch is part of the heart’s electrical conduction system that carries electrical signals from the atrioventricular (AV) node to the right and left ventricles. These signals help coordinate the heart’s contractions, allowing the ventricles to pump blood efficiently throughout the body.

The conduction system includes two main bundle branches: the right bundle branch and the left bundle branch.

Why Bundle Branches Matter

Healthy bundle branches ensure that both ventricles contract in a coordinated manner. If electrical signals are delayed or blocked, the heart may beat less efficiently, potentially affecting circulation and overall heart function.

Conditions That Can Affect the Bundle Branches

  • Bundle branch block
  • Coronary artery disease
  • Heart attack
  • Heart failure
  • Cardiomyopathy
  • Congenital heart disease

How Are Bundle Branch Problems Diagnosed?

Healthcare providers typically diagnose bundle branch abnormalities with an electrocardiogram (ECG). Additional testing, such as an echocardiogram, stress test, Holter monitor, or cardiac imaging, may be recommended to evaluate the underlying cause.

How Home Care Can Help

Home care professionals encourage medication adherence, support heart-healthy lifestyle habits, monitor for symptoms such as dizziness or shortness of breath, and communicate changes in condition to the healthcare provider.

Home Care Tip

Keep regular follow-up appointments with your healthcare provider if you have a heart rhythm disorder or conduction abnormality, even if you feel well.

Frequently Asked Questions About Bundle Branches

How many bundle branches does the heart have?

The heart has two main bundle branches: the right bundle branch and the left bundle branch, which deliver electrical signals to the ventricles.

Can someone have a bundle branch problem without symptoms?

Yes. Some people have bundle branch abnormalities that are discovered during a routine ECG and do not cause noticeable symptoms.

Can home care professionals support someone with a heart conduction disorder?

Yes. Home care professionals reinforce treatment plans, monitor symptoms, encourage healthy lifestyle habits, and support individuals living with heart conditions.

When to Contact Your Healthcare Provider

Contact your healthcare provider if you develop dizziness, fainting, chest discomfort, palpitations, shortness of breath, or worsening symptoms related to a heart condition.

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