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Retrograde sharp potential resembling the his-bundle electrogram: is this a case of atrioventricular re-entrant tachycardia involving twin atrioventricular nodes with the anterior node exhibiting only retrograde conduction?

Published online by Cambridge University Press:  09 September 2020

Gaku Izumi Open the ORCID record for Gaku Izumi [Opens in a new window] ,
Hisashi Yokoshiki  and
Atsuhito Takeda
Gaku Izumi*
Affiliation:
Department of Paediatrics, Hokkaido University Graduate School of Medicine, Sapporo060-8638, Japan
Hisashi Yokoshiki
Affiliation:
Department of Cardiovascular Medicine, Sapporo City General Hospital, Chuo-ku, Sapporo060-8604, Japan
Atsuhito Takeda
Affiliation:
Department of Paediatrics, Hokkaido University Graduate School of Medicine, Sapporo060-8638, Japan
*
Author for correspondence: Gaku Izumi, MD, PhD, Department of Paediatrics, Hokkaido University Graduate School of Medicine, North-15 West-7, Sapporo060-8638, Japan. Tel: +81 11 706 5954; Fax: +81 11 706 7982. E-mail: gaku-izumi0920@med.hokudai.ac.jp
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Abstract

A 2-year-old male with right isomerism was referred for supraventricular tachycardias. Atrial pacing study revealed that anterograde conduction was only through the posterior atrioventricular node. During the mapping of ventriculoatrial conduction, we identified a sharp potential resembling a His-bundle electrogram with a decremental property at the anterior wall of the common atrium. Catheter ablation for the potential eliminated the anterior ventriculoatrial conduction, thereby indicating retrograde activation of the possible anterior atrioventricular node.

Keywords

Atrioventricular re-entrant tachycardiatwin atrioventricular nodesright atrial isomerism
Type
Brief Report
Information
Cardiology in the Young , Volume 30 , Issue 12 , December 2020 , pp. 1940 - 1942
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Copyright
© The Author(s), 2020. Published by Cambridge University Press

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References

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