JAPANESE CIRCULATION JOURNAL
Online ISSN : 1347-4839
Print ISSN : 0047-1828
ISSN-L : 0047-1828
Case Reports
Radiofrequency Catheter Ablation of a Concealed Atrioventricular Accessory Pathway Associated With a Coronary Sinus Diverticulum
Kiyotaka MatsuoYoshiyuki DoiSatoki FukaeKojiro NakaoIvan IlievNorihiro KomiyaShojiro IsomotoMotonobu HayanoKatsusuke Yano
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2000 Volume 64 Issue 5 Pages 393-395

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Abstract

A 31-year-old woman underwent radiofrequency catheter ablation of a concealed left posteroseptal accessory pathway associated with a coronary sinus diverticulum. The patient had previously undergone unsuccessful catheter ablation of the posteroseptal region of the mitral annulus. Coronary sinus venography revealed the presence of the diverticulum near the ostium. An electrogram in the neck of the diverticulum showed the shortest ventriculoatrial conduction time and a large accessory pathway potential during atrioventricular reciprocating tachycardia. The pathway was successfully ablated within the neck of the diverticulum. The findings in this case underscore the importance of coronary sinus venography before ablation.

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© 2000 THE JAPANESE CIRCULATION SOCIETY
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