Journal Article

Intermittent fasciculoventricular pathway: ECG and electrophysiologic findings, clinical implications

Agustín Bortone, Florence Leclercq, Robert Grolleau-Raoux and Jean-Luc Pasquié

in EP Europace

Published on behalf of European Heart Rhythm Association of the European Society of Cardiology (ESC)

Volume 9, issue 8, pages 702-705
Published in print August 2007 | ISSN: 1099-5129
Published online April 2007 | e-ISSN: 1532-2092 | DOI: http://dx.doi.org/10.1093/europace/eum049
Intermittent fasciculoventricular pathway: ECG and electrophysiologic findings, clinical implications

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Although fasciculoventricular (FV) pathways never participate into tachycardia circuits, they give rise to ventricular pre-excitation of variable magnitude which can be source of ECG misinterpretation when associated to other supraventricular rhythm disorders. We report an intermittent FV pathway coincidentally unmasked during an electrophysiologic study performed for a symptomatic supraventricular tachycardia (atrial tachycardia). The clinical context, ECG and EP findings, and therapeutic options are described. Fasciculoventricular pathways need no medical or ablative treatment, thus their positive and differential diagnosis must be clearly assessed.

Keywords: Ventricular pre-excitation; Mahaim fibres; Intermittent fasciculoventricular pathway; Atrial tachycardia

Journal Article.  1572 words.  Illustrated.

Subjects: Cardiovascular Medicine

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