Retrograde ventriculoatrial jump—What is the mechanism?

During ventricular extra stimuli(VES) protocol a VA jump was noted. In upper panel with VES @ 500/270 ms (Fig A) the His signal appeared after the A‐EGM, ruling out pure nodal VA conduction and confirming presence of an accessory pathway (AP). The H signal was delayed due to probable retrograde RBBB...

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Autores principales: Bera, Debabrata, Majumder, Suchit, Choudhury, Saroj Kumar, Mukherjee, Sanjeev S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2023
Materias:
Spotlight
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10407172/
https://www.ncbi.nlm.nih.gov/pubmed/37560276
http://dx.doi.org/10.1002/joa3.12873
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author Bera, Debabrata
Majumder, Suchit
Choudhury, Saroj Kumar
Mukherjee, Sanjeev S.
author_facet Bera, Debabrata
Majumder, Suchit
Choudhury, Saroj Kumar
Mukherjee, Sanjeev S.
author_sort Bera, Debabrata
collection PubMed
description During ventricular extra stimuli(VES) protocol a VA jump was noted. In upper panel with VES @ 500/270 ms (Fig A) the His signal appeared after the A‐EGM, ruling out pure nodal VA conduction and confirming presence of an accessory pathway (AP). The H signal was delayed due to probable retrograde RBBB. The atrium was already depolarised via AP and the VA traversing via left bundle‐His‐node got blocked with a H signal. In the lower panel with VES of 500/260 ms the retrograde AP conduction reached the effective refractory period and pure nodal VA conduction took place along with retrograde RBBB. The retrograde VA jump was hence due to a jump from AP to AV node. [Image: see text]
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spelling pubmed-104071722023-08-09 Retrograde ventriculoatrial jump—What is the mechanism? Bera, Debabrata Majumder, Suchit Choudhury, Saroj Kumar Mukherjee, Sanjeev S. J Arrhythm Spotlight During ventricular extra stimuli(VES) protocol a VA jump was noted. In upper panel with VES @ 500/270 ms (Fig A) the His signal appeared after the A‐EGM, ruling out pure nodal VA conduction and confirming presence of an accessory pathway (AP). The H signal was delayed due to probable retrograde RBBB. The atrium was already depolarised via AP and the VA traversing via left bundle‐His‐node got blocked with a H signal. In the lower panel with VES of 500/260 ms the retrograde AP conduction reached the effective refractory period and pure nodal VA conduction took place along with retrograde RBBB. The retrograde VA jump was hence due to a jump from AP to AV node. [Image: see text] John Wiley and Sons Inc. 2023-05-28 /pmc/articles/PMC10407172/ /pubmed/37560276 http://dx.doi.org/10.1002/joa3.12873 Text en © 2023 The Authors. Journal of Arrhythmia published by John Wiley & Sons Australia, Ltd on behalf of Japanese Heart Rhythm Society. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
spellingShingle Spotlight
Bera, Debabrata
Majumder, Suchit
Choudhury, Saroj Kumar
Mukherjee, Sanjeev S.
Retrograde ventriculoatrial jump—What is the mechanism?
title Retrograde ventriculoatrial jump—What is the mechanism?
title_full Retrograde ventriculoatrial jump—What is the mechanism?
title_fullStr Retrograde ventriculoatrial jump—What is the mechanism?
title_full_unstemmed Retrograde ventriculoatrial jump—What is the mechanism?
title_short Retrograde ventriculoatrial jump—What is the mechanism?
title_sort retrograde ventriculoatrial jump—what is the mechanism?
topic Spotlight
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10407172/
https://www.ncbi.nlm.nih.gov/pubmed/37560276
http://dx.doi.org/10.1002/joa3.12873
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