An abnormally fast heartbeat caused by irregular electrical impulses that originate in the lower chambers of the heart (the ventricles). Ventricular tachycardia that stops by itself within 30 seconds is called non-sustained ventricular tachycardia (NSVT). Any ventricular tachycardia is considered a potentially dangerous cardiac arrhythmia. However, because NSVT does not persist, it is substantially less dangerous than a sustained ventricular tachycardia (SVT) and may turn out to be completely benign. Still, NSVT can cause potentially worrisome symptoms and may indicate an increased cardiac risk.
« Back to Glossary IndexNon Sustained Ventricular Tachycardia [NSVT]
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