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Atrial Tachycardia Successfully Ablated from the Left Coronary Sinus Cusp of the Aorta: An Unusual Site of Origin

It has been recognized in the last decade that atrial and ventricular tachycardias may arise from the myocardium around the aorta. These tachycardias can be ablated from the coronary sinus cusps of the aorta (ASCs). In some of those tachycardias, the site of origin may be epicardial and thus can be ablated only through the thin structure of the ASCs. It is important to know how to make a diagnosis, map and ablate tachycardias arising from this region.

Credits: Takumi Yamada MD, PhD