Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a rare genetic disease with an incidence of approximately 1:10,000 in European population and a very high mortality rate if left untreated, reaching 31% by the age of 30 years [1]. It is characterized by bidirectional or polymorphic ventricular tachycardias (VT) induced by an adrenergic triggering factor, such as emotional stress o...

Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a rare genetic disease with an incidence of approximately 1:10,000 in European population and a very high mortality rate if left untreated, reaching 31% by the age of 30 years [1]. It is characterized by bidirectional or polymorphic ventricular tachycardias (VT) induced by an adrenergic triggering factor, such as emotional stress o...

Sotalol may induce torsade de pointes through cardiac action potential prolongation, but a proarrhythmic effect secondary to its beta blocking action has not been reported. A 54 year old man presented with symptoms of angina and presyncope, subsequently demonstrated to be associated with coronary spasm. Treatment with sotalol exacerbated his symptoms and resulted in recurrent polymorphic ventri...

One hundred and one patients with sustained unimorphic ventricular tachycardia underwent programmed ventricular stimulation with one of two protocols. Fifty patients underwent programmed stimulation with protocol A, which consisted of burst overdrive pacing, single, double, and triple extrastimuli at the right ventricular apex, right ventricular outflow tract, or septum, and then at the left ve...

Aim: Assessment and comparison of different algorithms that Automated External Defibrillators (AEDs) use to recognize as shockable monomorphic and polymorphic Ventricular Tachycardia (VT). Method: Engineering bench tests for a descriptive systematic evaluation in commercially available AEDs. AEDs were tested through an electrocardiographic (ECG) simulator that is capable to generate different k...

Catecholaminergic polymorphic ventricular tachycardia (CPVT) is characterized by episodic syncope resulting from fast VT (bidirectional or polymorphic) occurring during exercise/acute emotion in individuals without structural cardiac abnormalities. Mean age of onset is between seven and nine years, although onset as late as the fourth decade of life has been reported. We present the oldest repo...

Introduction Bradycardia is a known risk factor for QT prolongation and polymorphic ventricular tachycardia (polymorphic VT). With the widespread use of pacemakers, it is important to pay attention to different pacing modes while programming pacemakers to avoid bradycardia. We present a case of bradycardia-induced polymorphic VT that occurred after a VDD pacemaker was replaced with a VVIR pacem...