Sudden cardiac arrest (SCA) is usually caused by an electrical problem in the heart. SCA occurs when the heart's lower chambers (ventricles) suddenly develop a rapid, irregular rhythm (ventricular fibrillation) causing the ventricles to quiver rather
Ventricular tachycardia (abbreviated: VT) is a rapid heartbeat (tachycardia) that occurs in the ventricles (Lat. ventriculus ventricle) heart. Ventricular tachycardia is one of the so-called.