A latent atrioventricular decrementally conducting accessory pathway mimicking a bystander nodoventricular fiber

Pacing Clin Electrophysiol. 2010 Aug;33(8):e76-80. doi: 10.1111/j.1540-8159.2010.02713.x. Epub 2010 Mar 3.

Abstract

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.

Publication types

  • Case Reports

MeSH terms

  • Accessory Atrioventricular Bundle / physiopathology*
  • Adult
  • Atrioventricular Node / physiopathology
  • Catheter Ablation
  • Diagnosis, Differential
  • Electrocardiography*
  • Electrophysiologic Techniques, Cardiac
  • Female
  • Heart Conduction System / physiopathology*
  • Humans
  • Tachycardia / diagnosis
  • Tachycardia / physiopathology*
  • Tachycardia / surgery
  • Tachycardia, Atrioventricular Nodal Reentry / diagnosis
  • Tachycardia, Ventricular / diagnosis