Idiopathic ventricular tachycardia in children

Idiopathic ventricular tachycardia (IVT) is referred to as idiopathic ventricular tachycardia in children. There are two types of tachycardia and idiopathic right ventricular outflow tract VT. Among them, idiopathic left ventricular tachycardia (ILVT) accounts for about 20% of idiopathic VT, which is more common in patients aged 15-40 years, and more common in men, accounting for about 60% -80%. The clinical manifestations are light and the prognosis of ventricular tachycardia is good. Because the origin of tachycardia is mostly located at the posterior branch of the left bundle branch or the anterior branch and the right branch branch of the His bundle bifurcation, it is also called branched ventricular tachycardia. speed. It accounts for about 10% of the incidence of ventricular tachycardia. The cause of idiopathic ventricular tachycardia is unknown, and many studies suggest that its mechanism is related to the triggering of depolarization after reentry or delay. Compared with ventricular tachycardia after ischemic heart disease, the QRS shape of idiopathic ventricular tachycardia has the following characteristics: the degree of widening of the QRS time limit is small, the degree of frontal electrocardiographic axis shift is small, and no qR Or QR-type QRS morphology.