Intermittent fasciculoventricular pathway: ECG and electrophysiologic findings, clinical implications.
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.
Bortone
Agustín
A
CHU Montpellier, Service de Cardiologie A, Clinique de Maladies du Coeur et des Vaisseaux, Hôpital Arnaud de Villeneuve, Centre Hospitalo-Universitaire, 371, avenue du Doyen Gaston Giraud, 34295 Montpellier Cedex 5, France. agubene@hotmail.com
Leclercq
Florence
F
Grolleau-Raoux
Robert
R
Pasquié
Jean-Luc
JL
D000328:Adult; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006329:Heart Conduction System / Q000002:abnormalities*; D006352:Heart Ventricles / Q000002:abnormalities*; D006801:Humans; D013617:Tachycardia, Supraventricular / Q000175:diagnosis* / Q000209:etiology*