Ventricular tachycardia refers to a wide QRS complex heart rhythm — that is, a QRS duration beyond 120 milliseconds — originating in the ventricles at a rate of greater than 100 beats per minute.

Bidirectional ventricular tachycardia occurs when the QRS axis alternates with every other beat. This is a pathognomonic rhythm during digoxin toxicity, however is relatively rare. The Brugada ...

"Catheter ablation and antiarrhythmic drug therapy can reduce the risk of recurrent ventricular tachycardia and implantable cardioverter-defibrillator shock, but both approaches are associated ...