Simultaneous dual AV node antegrade conduction (2 for 1) and lower common pathway (2–1) block illustrate AVNRT physiology

We report a rare case of spontaneous initiation of Atrioventricular nodal reentry tachycardia (AVNRT) via 2 for 1 phenomenon, into a 2:1 AV block due to lower common pathway block and finally transition to 1:1 tachycardia. The premature atrial p wave traverses down both the fast and slow pathway sim...

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Autores principales: Hanumanthu, Balaram Krishna, Krummerman, Andrew, Grushko, Michael
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2019
Materias:
Case Report
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7082665/
https://www.ncbi.nlm.nih.gov/pubmed/31857211
http://dx.doi.org/10.1016/j.ipej.2019.12.007
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author Hanumanthu, Balaram Krishna
Krummerman, Andrew
Grushko, Michael
author_facet Hanumanthu, Balaram Krishna
Krummerman, Andrew
Grushko, Michael
author_sort Hanumanthu, Balaram Krishna
collection PubMed
description We report a rare case of spontaneous initiation of Atrioventricular nodal reentry tachycardia (AVNRT) via 2 for 1 phenomenon, into a 2:1 AV block due to lower common pathway block and finally transition to 1:1 tachycardia. The premature atrial p wave traverses down both the fast and slow pathway simultaneously during 2 for 1 initiation and is met with subsequent typical AVNRT with 2:1 block. Infranodal location of the block is confirmed on electrophysiologic testing and is also cured by intervention. This rare electrographic presentation is not only pathognomonic for AVNRT with lower common pathway block but also illustrates its dual conduction physiology.
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spelling pubmed-70826652020-03-23 Simultaneous dual AV node antegrade conduction (2 for 1) and lower common pathway (2–1) block illustrate AVNRT physiology Hanumanthu, Balaram Krishna Krummerman, Andrew Grushko, Michael Indian Pacing Electrophysiol J Case Report We report a rare case of spontaneous initiation of Atrioventricular nodal reentry tachycardia (AVNRT) via 2 for 1 phenomenon, into a 2:1 AV block due to lower common pathway block and finally transition to 1:1 tachycardia. The premature atrial p wave traverses down both the fast and slow pathway simultaneously during 2 for 1 initiation and is met with subsequent typical AVNRT with 2:1 block. Infranodal location of the block is confirmed on electrophysiologic testing and is also cured by intervention. This rare electrographic presentation is not only pathognomonic for AVNRT with lower common pathway block but also illustrates its dual conduction physiology. Elsevier 2019-12-16 /pmc/articles/PMC7082665/ /pubmed/31857211 http://dx.doi.org/10.1016/j.ipej.2019.12.007 Text en © 2019 Indian Heart Rhythm Society. Production and hosting by Elsevier B.V. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Case Report
Hanumanthu, Balaram Krishna
Krummerman, Andrew
Grushko, Michael
Simultaneous dual AV node antegrade conduction (2 for 1) and lower common pathway (2–1) block illustrate AVNRT physiology
title Simultaneous dual AV node antegrade conduction (2 for 1) and lower common pathway (2–1) block illustrate AVNRT physiology
title_full Simultaneous dual AV node antegrade conduction (2 for 1) and lower common pathway (2–1) block illustrate AVNRT physiology
title_fullStr Simultaneous dual AV node antegrade conduction (2 for 1) and lower common pathway (2–1) block illustrate AVNRT physiology
title_full_unstemmed Simultaneous dual AV node antegrade conduction (2 for 1) and lower common pathway (2–1) block illustrate AVNRT physiology
title_short Simultaneous dual AV node antegrade conduction (2 for 1) and lower common pathway (2–1) block illustrate AVNRT physiology
title_sort simultaneous dual av node antegrade conduction (2 for 1) and lower common pathway (2–1) block illustrate avnrt physiology
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7082665/
https://www.ncbi.nlm.nih.gov/pubmed/31857211
http://dx.doi.org/10.1016/j.ipej.2019.12.007
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AT grushkomichael simultaneousdualavnodeantegradeconduction2for1andlowercommonpathway21blockillustrateavnrtphysiology

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