Arrhythmia Center

An arrhythmia is an abnormal heart rhythm. With an arrhythmia, the heartbeats may be irregular or too slow (bradycardia), to rapid (tachycardia), or too early. When a single heartbeat occurs earlier than normal, it is called a prmature contraction. Read more: Arrhythmia Article

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Medically Reviewed by a Doctor on 3/7/2009

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