What is Nonsustained ventricular tachycardia?

As a medical professional with expertise in cardiology, I can provide you with an accurate description of nonsustained ventricular tachycardia. Nonsustained ventricular tachycardia (NSVT) is a type of abnormal heart rhythm that originates in the ventricles, which are the lower chambers of the heart. It is characterized by three or more consecutive ventricular premature beats (extra, early beats that originate in the ventricles) at a rate of more than 100 beats per minute. The key feature of NSVT is that it is self-terminating and lasts for less than 30 seconds. Unlike sustained ventricular tachycardia, which can lead to a life-threatening condition known as ventricular fibrillation, NSVT typically does not cause significant symptoms or require immediate medical intervention. However, it is important to note that NSVT can be a sign of underlying heart disease, and individuals with this condition should be monitored by a healthcare provider. Risk factors for NSVT include a history of heart attack, heart failure, or structural heart abnormalities. Treatment may not be necessary for NSVT itself, but addressing the underlying cause is crucial.

Nonsustained ventricular tachycardia (NSVT) is defined as 3 or more consecutive beats at a rate of > beats/min and lasting < 30 s. In some settings, NSVT is a marker of increased risk for subsequent sustained tachyarrhythmias and sudden cardiac death. In other settings they have no prognostic significance.