Atrio-Ventricular (AV) block is a type of heart block that occurs when the electrical signals that control the heart’s rhythm are disrupted. It is caused by a problem with the electrical conduction system of the heart, which is responsible for sending electrical signals from the atria to the ventricles. This disruption can cause the heart to beat too slowly, too quickly, or irregularly. Symptoms of AV block can include dizziness, lightheadedness, shortness of breath, and chest pain. Treatment for AV block depends on the type and severity of the block but may include medications, pacemakers, or surgery.« Back to Glossary Index
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