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A Unique Preexcitation Pattern Related to an Atypical Anteroseptal Accessory Pathway
Author(s) -
TEO WEE SIONG,
GUIRAUDON GERARD,
KLEIN GEORGE J.,
LEITCH JAMES W.,
YEE RAYMOND
Publication year - 1992
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1992.tb02957.x
Subject(s) - medicine , accessory pathway , cardiology , atrial fibrillation , catheter ablation
Accessory atrioventricular pathways have traditionally been classified by anatomical Jocation to four areas, namely anteroseptal, posteroseptal, and right and left free walls. Each of these have been associated with a relatively distinct preexcitafion pattern electrocardiographically. We describe a patient with a unique EGG pattern suggesting preexcitation to the right ventricular outflow region, Preoperative and intraoperative electrophysioJogicaJ testing confirmed the presence of an accessory pathway with an atrial insertion site near the His bundle, decremental anterograde conduction, and a ventricular insertion site in the upper part of the interventricular septum. Operative ablation near the atrial insertion site eliminated preexcitation.