Characteristic | Idiopathic RV VT | Scar-related RV VT |
Any sinus rhythm ECG abnormality | Rare | ++ |
VT QRS morphology | ||
QRS transition after V4 | Rare | ++ |
Notched down stroke in V1/2 | Rare | ++ |
Delay in nadir of V1 | Rare | ++ |
Multiple VT morphologies | Rare | ++ |
Isoproterenol required for initiation at EP study | ++ | Uncommon (except AC) |
AC, arrhythmogenic cardiomyopathy; EP, electrophysiology; RV, right ventricular; VT, ventricular tachycardia.