Heart Institute Encyclopedia

Fast Arrhythmias (Tachyarrhythmia)

Look up a term in The Heart Center glossary.

The normal heartbeat originates from the heart's normal pacemaker called the sinus node. An arrhythmia occurs when the electrical activity of the heart originates from a location other than this normal pacemaker.

This location can be a site in the upper or lower chambers of the heart, or it can be a "circuit" composed of parts of the upper chambers, the lower chambers, or both.

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Description of a Fast Rhythm

Signs and Symptoms of Fast Arrhythmias

Treatment for Fast Arrhythmias

Types of Supra-Ventricular Tachycardias

Diagnosis of Fast Arrhythmias

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Last Updated: 10/2011