Successful ablation of aortic cusp tachycardia from right ventricle outflow tract using a superior approach.

We report a case of successful radiofrequency catheter ablation of idiopathic aortic cusp tachycardia arising close to right coronary artery ostium performed safely from the right ventricular outflow tract (RVOT) by unconventional superior approach. As both activation mapping and pace mapping of the tachycardia were suboptimal from transfemoral RV endocardial approach, retrograde aortic mapping was performed. This revealed that the site of ventricular tachycardia (VT) origin to be on the right coronary sinus. Due to close proximity of VT site of origin and the right coronary ostium, an alternate approach to ablation was considered. We approached this area easily and successfully ablated the VT with an ablation catheter introduced from a right-sided superior approach (jugular vein). The patient has remained free from recurrences over an 18 month follow-up period.