MyHeartDiseaseTeam

A left bundle branch block can be caused by several heart-related conditions, including:

- Coronary artery disease
- Heart attacks that damage the heart's electrical system
- High blood pressure that strains the heart over time
- Problems with heart valves (either too rigid or too loose)

The electrical system in your Show Full Answer

A left bundle branch block can be caused by several heart-related conditions, including:

- Coronary artery disease
- Heart attacks that damage the heart's electrical system
- High blood pressure that strains the heart over time
- Problems with heart valves (either too rigid or too loose)

The electrical system in your heart can be disrupted when heart muscle is damaged during a heart attack, which can lead to bundle branch block. However, it's not the only cause. If you're experiencing symptoms like:
- Chest pain
- Shortness of breath
- Dizziness
- Feeling extremely tired

It's important to discuss these with your cardiologist. They may want to perform tests to determine the underlying cause and develop an appropriate treatment plan.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

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