Arrhythmia
Heart and circulation
There are a number of different types of arrhythmia. Most arrhythmias that come from the top of your heart (supraventricular or atrial) can cause symptoms but aren't life threatening. Arrhythmias that arise from your ventricles (ventricular) are more serious and can sometimes be fatal.
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Produced by Louise Abbott, Bupa Health Information Team, February 2012.
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