Narrow QRS Tachycardia: What Is the Mechanism?

A 45-year-old man was referred for radiofrequency catheter ablation of narrow QRS tachycardia that terminated with intravenous adenosine. A 12-lead electrocardiogram showed no baseline pre-excitation. The echocardiogram was essentially normal. The electrophysiological study showed a normal atrial–Hi...

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Detalles Bibliográficos
Autores principales: Mohanan Nair, Krishna Kumar, Namboodiri, Narayanan, Valaparambil, Ajitkumar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MediaSphere Medical 2021
Materias:
Case Report
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8384300/
https://www.ncbi.nlm.nih.gov/pubmed/34476117
http://dx.doi.org/10.19102/icrm.2021.120803
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author Mohanan Nair, Krishna Kumar
Namboodiri, Narayanan
Valaparambil, Ajitkumar
author_facet Mohanan Nair, Krishna Kumar
Namboodiri, Narayanan
Valaparambil, Ajitkumar
author_sort Mohanan Nair, Krishna Kumar
collection PubMed
description A 45-year-old man was referred for radiofrequency catheter ablation of narrow QRS tachycardia that terminated with intravenous adenosine. A 12-lead electrocardiogram showed no baseline pre-excitation. The echocardiogram was essentially normal. The electrophysiological study showed a normal atrial–His interval of 110 ms and a His–ventricular interval of 44 ms during sinus rhythm. An anterograde study demonstrated no dual atrioventricular nodal physiology. Atrial pacing protocols easily and reproducibly induced a narrow QRS tachycardia. What is the mechanism of the tachycardia?
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spelling pubmed-83843002021-09-01 Narrow QRS Tachycardia: What Is the Mechanism? Mohanan Nair, Krishna Kumar Namboodiri, Narayanan Valaparambil, Ajitkumar J Innov Card Rhythm Manag Case Report A 45-year-old man was referred for radiofrequency catheter ablation of narrow QRS tachycardia that terminated with intravenous adenosine. A 12-lead electrocardiogram showed no baseline pre-excitation. The echocardiogram was essentially normal. The electrophysiological study showed a normal atrial–His interval of 110 ms and a His–ventricular interval of 44 ms during sinus rhythm. An anterograde study demonstrated no dual atrioventricular nodal physiology. Atrial pacing protocols easily and reproducibly induced a narrow QRS tachycardia. What is the mechanism of the tachycardia? MediaSphere Medical 2021-08-15 /pmc/articles/PMC8384300/ /pubmed/34476117 http://dx.doi.org/10.19102/icrm.2021.120803 Text en Copyright: © 2021 Innovations in Cardiac Rhythm Management https://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 Case Report
Mohanan Nair, Krishna Kumar
Namboodiri, Narayanan
Valaparambil, Ajitkumar
Narrow QRS Tachycardia: What Is the Mechanism?
title Narrow QRS Tachycardia: What Is the Mechanism?
title_full Narrow QRS Tachycardia: What Is the Mechanism?
title_fullStr Narrow QRS Tachycardia: What Is the Mechanism?
title_full_unstemmed Narrow QRS Tachycardia: What Is the Mechanism?
title_short Narrow QRS Tachycardia: What Is the Mechanism?
title_sort narrow qrs tachycardia: what is the mechanism?
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8384300/
https://www.ncbi.nlm.nih.gov/pubmed/34476117
http://dx.doi.org/10.19102/icrm.2021.120803
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