Shift in the earliest retrograde atrial activation site during

J Interv Card Electrophysiol · Sep 2008

Case Reports

Shift in the earliest retrograde atrial activation site during the fast-slow form of atrioventricular nodal reentrant tachycardia after the radiofrequency modification of the atrioventricular node: is the atrium a necessary link?

Whether or not the perinodal atrium forms an upper link in the tachycardia circuit of the atypical form of AV nodal reentrant tachycardia (AVNRT) is controversial. We report a case with the fast-slow form of AVNRT in whom the earliest retrograde atrial activation site during the tachycardia changed from the right inferoseptum to the right superoseptum close to the His bundle without a change in the tachycardia cycle length following the radiofrequency energy applications to the earliest retrograde atrial activation site. It was speculated that a sub-atrial reentry with multiple atrial breakthroughs was the possible tachycardia mechanism in the present case.

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- Kiyoshi Otomo, Kikuya Uno, Yasutoshi Nagata, Hiroshi Taniguchi, Hideomi Fujiwara, and Yoshito Iesaka.
- Division of Cardiology, Tsuchiura Kyodo Hospital, 11-7 Manabeshin-Machi, Tsuchiura, Ibaraki, Japan. k-otomo@fj8.so-net.ne.jp
- J Interv Card Electrophysiol. 2008 Sep 1; 22 (3): 243-9.
AbstractWhether or not the perinodal atrium forms an upper link in the tachycardia circuit of the atypical form of AV nodal reentrant tachycardia (AVNRT) is controversial. We report a case with the fast-slow form of AVNRT in whom the earliest retrograde atrial activation site during the tachycardia changed from the right inferoseptum to the right superoseptum close to the His bundle without a change in the tachycardia cycle length following the radiofrequency energy applications to the earliest retrograde atrial activation site. It was speculated that a sub-atrial reentry with multiple atrial breakthroughs was the possible tachycardia mechanism in the present case.

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Shift in the earliest retrograde atrial activation site during the fast-slow form of atrioventricular nodal reentrant tachycardia after the radiofrequency modification of the atrioventricular node: is the atrium a necessary link?

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