Indian Pacing and Electrophysiology Journal (Sep 2015)

An uncommon case of spontaneous conversion from AV re-entry tachycardia to AV nodal re-entry tachycardia in a patient with dual tachycardia

  • Ivan Zeljković,
  • Ivica Benko,
  • Šime Manola,
  • Vjekoslav Radeljić,
  • Nikola Pavlović

DOI
https://doi.org/10.1016/j.ipej.2016.02.001
Journal volume & issue
Vol. 15, no. 5
pp. 245 – 248

Abstract

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We report the case of a 46-year old patient in whom an electrophysiology study (EP) was performed due to paroxysmal supraventricular tachycardia documented in 12-lead ECG. During the EP study, supraventricular tachycardia was induced easily and it corresponded to orthodromic AV reentry tachycardia (AVRT) using a concealed left free wall accessory pathway. However, during the study AVRT spontaneously and repeatedly converted to the typical slow-fast AV node reentry tachycardia (AVNRT). Both accessory and AV nodal slow pathways were ablated, due to the finding that both AVRT and AVNRT were independently inducible during the EP study.