A latent atrioventricular decrementally conducting accessory pathway mimicking a bystander nodoventricular fiber.
A 41-year-old woman with recurrent wide-QRS tachycardia is reported. Electrophysiologic findings were consistent with the diagnosis of a preexcited atrioventricular nodal reentrant tachycardia due to a bystander nodo-ventricular fiber. However, slow pathway ablation did not preclude tachycardia recurrence. A second electrophysiology study shed light on the correct mechanism and eventually a successful ablation was achieved.
Department of Electrophysiology, Leipzig Heart Center, University of Leipzig, Leipzig, Germany. dr.huoyan@googlemail.com
Yan
Y
Huo
Gerhard
G
Hindricks
Ulrike
U
Wetzel
Thomas
T
Gaspar
Eduardo Back
EB
Sternick
D058606:Accessory Atrioventricular Bundle / Q000503:physiopathology*; D000328:Adult; D001283:Atrioventricular Node / Q000503:physiopathology; D017115:Catheter Ablation; D003937:Diagnosis, Differential; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D013610:Tachycardia / Q000175:diagnosis / Q000503:physiopathology* / Q000601:surgery; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis; D017180:Tachycardia, Ventricular / Q000175:diagnosis