P777S-R difference in V1-V2 is a novel criterion for differentiating the left from right ventricular outflow tract arrhythmias

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Abstract
Aim: The correct estimation of the VA origin as RVOT or LVOT results in reduced ablation duration reduced radiation exposure and decreased number of vascular access. In our study, we aimed to detect the predictive value of S-R difference in V1-V2 for differentiating the left from right ventricular outflow tract arrhythmias.