Arrhythmia

A defect (hole) in the ventricular septum which allows blood to shunt from one ventricle to the other.

Torsades de pointes is a distinctive polymorphic ventricular tachycardia in which the QRS amplitude varies and the QRS complexes appear to twist around the baseline. Torsades de pointes is associated with a prolonged QT interval, which may be congenital or acquired. Torsades de pointes is usually not sustained and terminates spontaneously but frequently recurs unless … Read more

A regular rapid heart rate (150-250 beats per minute) that is caused by events triggered in areas above the heart’s lower chambers (the ventricles); see also paroxysmal supraventricular tachycardia (PSVT)