Right coronary artery occlusion after radiofrequency catheter ablation of a posteroseptal accessory pathway: Lessons to avoid it

Radiofrequency (RF) catheter ablation is a safe and effective therapy for the treatment of most patients with recurrent atrioventricular reentrant tachycardia (AVRT).1 In such procedure, RF is delivered on the annulus of tricuspid and mitral rings aiming to eliminate accessory pathways (AP), which can be in almost any site along the valvular rings. Despite the relative proximity to the epicardial coronary arteries (CA), coronary occlusion has been rarely reported using the conventional techniques.