Catheter ablation of anteroseptal accessory pathways from the aortic cusps: A case series and a review of the literature
S s E B m t r a f l f f d A k t a v i a u e R s r t a t R i e In this two-part series on arrhythmias occurring above he semilunar valve, we discuss the relevant underlying natomy and the technique for mapping and ablation above he aortic and pulmonic valve. In part I, we focused on entricular arrhythmias, and in this paper (part II), we disuss the anatomy and present knowledge of the substrate apped and ablated above the aortic valve for atrial tachyardia in certain unusual accessory pathways. The backround anatomy of the aortic valve has been discussed in art I of this series, to which the reader is referred. Here we iscuss the detailed anatomy of the aortic cusps relevant for trial tachycardia and atrioventricular bypass tracts. Repreentative cases of these supravalvar arrhythmias are preented, and an approach for safe and effective ablation bove the aortic valve to eliminate atrial tachycardia and ypass tracts in this location is then outlined.