Arrhythmia

Types

Mayo Clinic doctors treat all types of arrhythmias.

• Arrhythmogenic right ventricular dysplasia (ARVD). Arrhythmogenic right ventricular dysplasia is a heart rhythm condition that may cause fast heartbeats in your ventricles and abnormalities in the structure of your ventricles.
• Atrial fibrillation. In atrial fibrillation, disorganized electrical signals in the upper chambers of your heart (atria) may cause an irregular fast heart rhythm.
• Atrial flutter. In atrial flutter, electrical abnormalities in your atria may cause a fast heart rhythm.
• Bradycardia. In bradycardia, you have a slow heart rhythm.
• Brugada syndrome. Brugada syndrome is a heart rhythm disorder characterized by a specific abnormal pattern found on an electrocardiogram. People who have Brugada syndrome have an increased risk of ventricular arrhythmias and sudden cardiac death.
• Heart block. In heart block, electrical impulses may be slowed or blocked in or near the atrioventricular node (AV node), the electrical connection between the atria and lower heart chambers (ventricles).
• Long QT syndrome. In long QT syndrome, electrical problems in your heart cause a longer recovery time than normal between each heartbeat. Long QT syndrome may put you at risk of cardiac arrhythmias.
• Premature heartbeats. Premature heartbeats, or extra heartbeats, generally aren't related to any heart disease and often don't cause any symptoms.
• Sick sinus syndrome. In this condition, your heart's natural pacemaker (sinoatrial node) doesn't work correctly.
• Tachycardia. In tachycardia, you have a fast heart rhythm in your atria (supraventricular tachycardia) or in your ventricles (ventricular tachycardia or ventricular fibrillation).
• Wolff-Parkinson-White syndrome. In Wolff-Parkinson-White syndrome, an extra electrical pathway in your heart may intermittently cause a fast heart rhythm.

Read more about atrial fibrillation, bradycardia, Brugada syndrome, long QT syndrome, sick sinus syndrome, tachycardia and Wolff-Parkinson-White syndrome.