Heart block happens when the heart’s electrical signals are too slow or are interrupted.
What is a heart block?
A heart block is a type of arrhythmia called bradycardia. It happens when the heart’s electrical signals are too slow or are interrupted.
It can be a complication of other heart diseases or a side effect from medication, heart attack, surgery or infection.
What are the symptoms of a heart block?
Common symptoms of a heart block include:
- Dizziness
- Fatigue
- Chest pain
- Fainting
What are the causes of a heart block?
Heart block is most likely to occur in seniors. The chances of getting a heart block are higher if you have the following:
- Coronary artery disease
- Cardiomyopathy
- Rheumatic heart disease
- Uncontrolled or untreated high blood pressure
How is a heart block diagnosed and treated?
Your doctor will review your medical history and may ask you to have an electrocardiogram (ECG).
A heart block can be treated with an implantable pacemaker to provide regular electrical stimulation and help the heart beat in a regular rhythm. See our arrhythmia page for more information.
Resources
The following resources have information about the causes, symptoms, diagnosis, and treatment for heart block: