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