Ventricular tachycardia is an abnormal heart rhythm in which the heart beats rapidly due to electrical stimulation coming from the ventricle.
Nonsustained ventricular tachycardia is elevated heart rate originating in the ventricles that stops on its own.
Ventricular fibrillation, and supraventricular or ventricular tachycardia.
A rapid heart rate can originate in either the left or right ventricle. Ventricular tachycardia which lasts more than 30 seconds is referred to as sustained ventricular tachycardia
AV node
heart arrhythmias usually of the more dangerous kind. Like ventricular tachycardia and ventricular fibrillation.
Most ventricular tachycardias are associated with serious heart disease such as coronary artery blockage, cardiomyopathy, or valvular heart disease.
Ventricular Tachycardia
Symptoms for ventricular tachycardia include heart palpitations, dizziness, shortness of breath, chest pain, and a weak pulse. For more information, visit websites like MayoClinic and WebMD.
The symptoms of supra-ventricular tachycardia include heart palpitations, a feeling of the chest tightening, shortness of breath, sweating, and peeing frequently.
As an individual having had SVT since birth I have grown to understand this as an inexplicable, rapid increase in heart rate. There are possible contributary factors such as high fat diet and alcohol but mine seems to be triggered posturally (when i bend over or jump). The heart will jump from resting to 200bpm in a blink of an eye and may last for anything from 5 seconds to 60 minutes (for me). Treatment can be digoxin which cures arhythmias. Other symptoms of SVT include palor, sweat, shortness of breath and dizzyness. Thought to be a chronic condition although having spoken to several doctors about it, there doesnt seem to be a definite answer as to why it happens.
The condition of irregular quivering of the atria and rapid ventricular heartbeat is atrial fibrillation, or a-fib. While serious, a-fib is not immediately life threatening.