A Wide Complex Tachycardia in a Structurally Normal Heart: What is the Mechanism? Where to Ablate?

We present a case of wide complex tachycardia (left bundle branch block, superior axis) in a 30-year-old female with a structurally normal heart and no baseline preexcitation on electrocardiogram. Tachycardia initiation and atrial pacing confirmed the existence and participation of a right-sided atr...

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Detalles Bibliográficos
Autores principales: Lokhandwala, Yash, Vyas, Aniruddha
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MediaSphere Medical 2019
Materias:
Complex Case Study
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252864/
https://www.ncbi.nlm.nih.gov/pubmed/32494405
http://dx.doi.org/10.19102/icrm.2019.100101
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author Lokhandwala, Yash
Vyas, Aniruddha
author_facet Lokhandwala, Yash
Vyas, Aniruddha
author_sort Lokhandwala, Yash
collection PubMed
description We present a case of wide complex tachycardia (left bundle branch block, superior axis) in a 30-year-old female with a structurally normal heart and no baseline preexcitation on electrocardiogram. Tachycardia initiation and atrial pacing confirmed the existence and participation of a right-sided atriofascicular decrementally conducting Mahaim pathway. Tachycardia mechanism validation by atrial pacing maneuvers was documented as well as was a response to adenosine and preexcited Mahaim atrial fibrillation. The usual ablation site did not record a Mahaim potential; hence, ablation was performed at a site other than the usual one.
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spelling pubmed-72528642020-06-02 A Wide Complex Tachycardia in a Structurally Normal Heart: What is the Mechanism? Where to Ablate? Lokhandwala, Yash Vyas, Aniruddha J Innov Card Rhythm Manag Complex Case Study We present a case of wide complex tachycardia (left bundle branch block, superior axis) in a 30-year-old female with a structurally normal heart and no baseline preexcitation on electrocardiogram. Tachycardia initiation and atrial pacing confirmed the existence and participation of a right-sided atriofascicular decrementally conducting Mahaim pathway. Tachycardia mechanism validation by atrial pacing maneuvers was documented as well as was a response to adenosine and preexcited Mahaim atrial fibrillation. The usual ablation site did not record a Mahaim potential; hence, ablation was performed at a site other than the usual one. MediaSphere Medical 2019-01-15 /pmc/articles/PMC7252864/ /pubmed/32494405 http://dx.doi.org/10.19102/icrm.2019.100101 Text en Copyright: © 2019 Innovations in Cardiac Rhythm Management http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Complex Case Study
Lokhandwala, Yash
Vyas, Aniruddha
A Wide Complex Tachycardia in a Structurally Normal Heart: What is the Mechanism? Where to Ablate?
title A Wide Complex Tachycardia in a Structurally Normal Heart: What is the Mechanism? Where to Ablate?
title_full A Wide Complex Tachycardia in a Structurally Normal Heart: What is the Mechanism? Where to Ablate?
title_fullStr A Wide Complex Tachycardia in a Structurally Normal Heart: What is the Mechanism? Where to Ablate?
title_full_unstemmed A Wide Complex Tachycardia in a Structurally Normal Heart: What is the Mechanism? Where to Ablate?
title_short A Wide Complex Tachycardia in a Structurally Normal Heart: What is the Mechanism? Where to Ablate?
title_sort wide complex tachycardia in a structurally normal heart: what is the mechanism? where to ablate?
topic Complex Case Study
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252864/
https://www.ncbi.nlm.nih.gov/pubmed/32494405
http://dx.doi.org/10.19102/icrm.2019.100101
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