Successful ablation of a left-sided pathway in patient with a left atrial coronary sinus orifice : a case report (original) (raw)

Coronary sinus (CS) is a landmark for cardiac intervention. Before catheter ablation of paroxysmal supraventricular tachycardia, coronary sinus is used to obtain recordings from the left atrium and ventricle. Despite asymptomatic, anomalies of coronary sinus may become an obstacle for electrophysiological catheterization. Here, we described a case of successful ablation of paroxysmal supraventricular tachycardia in which the accessory pathway located at the mitral valve annulus and the coronary sinus opened directly at left atrium. To the best of our knowledge, this is the first case reported that has left atrium catheterized, recorded and ablated through interatrial septum because of the left atrial coronary sinus orifice.