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Coexistent Atrioventricular and Nodoventricular Pathways in a Patient with Hypertrophic Cardiomyopathy
Author(s) -
FITCHET ALAN,
LINKER NICHOLAS J.,
FITZPATRICK ADAM P.
Publication year - 2000
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.1540-8159.2000.tb00925.x
Subject(s) - medicine , cardiology , antidromic , hypertrophic cardiomyopathy , tachycardia , electrophysiology study , ablation , accessory pathway , electrophysiology , catheter ablation
A 17‐year‐old girl with concentric hypertrophic cardiomyopathy presented with a wide complex tachycardia and underwent electrophysiological study. She was found to have an antidromic tachycardia utilizing a decremental atrioventricular fiber as the anterograde limb with retrograde conduction occurring through the septum. Ablation of a right free‐wall pathway rendered tachycardia noninducible, yet ventricular preexcitation remained. After ablation there was evidence of a second nodoventricular connection. We believe this to be the first report of coexistent “Mahaim” fibers; one a decremental atrioventricular connection and the second nodoventricular.