In cardiology, NSVT stands for Nonsustained Ventricular Tachycardia, which is a common but often poorly understood heart rhythm irregularity.
Understanding Nonsustained Ventricular Tachycardia (NSVT)
NSVT is a type of arrhythmia characterized by a rapid heart rate originating in the ventricles (lower chambers of the heart) that lasts for a short duration.
Key Characteristics of NSVT:
- Ventricular Origin: The rapid heartbeats originate from the ventricles.
- Short Duration: The rapid rhythm lasts less than 30 seconds.
- Non-Sustained: It terminates on its own without intervention.
How is NSVT Usually Diagnosed?
According to the provided reference, NSVT is often asymptomatic and is most frequently detected during:
- Cardiac monitoring, such as:
- Continuous ambulatory electrocardiography (Holter monitor)
- Inpatient telemetry
- An exercise test performed for other reasons.
Symptoms of NSVT
As stated in the reference, NSVT is usually asymptomatic. However, depending on the rate and the individual's overall health, symptoms can include:
- Palpitations (feeling of skipped heartbeats or fluttering in the chest)
- Lightheadedness or dizziness
- Shortness of breath
- Chest discomfort
- Fainting (syncope), although this is less common with NSVT compared to sustained ventricular tachycardia.
