A 16-year-old patient with recurrent palpitations and documented cashel tail bag left bundle branch block superior axis wide complex tachycardia underwent an electrophysiological study and ablation with a zero-fluoroscopy procedure.The electrophysiological study showed a decremental antegrade conducting atriofascicular pathway.Three-dimensional CARTO-guided mapping of the tricuspid annulus in sinus rhythm was performed, and a distinct signal corresponding to the accessory pathway potential of the atriofascicular pathway was found in the posterolateral region.By using an SR0 sheath and a 4-mm-tip catheter, radiofrequency application was delivered at this point voyage et cie discount code on the annulus and successfully eliminated conduction through the accessory pathway.