QRS alternans during right ventricular pacing while ablating a concealed left sided accessory pathway

A 16-year-old boy was referred for an electrophysiological study for documented regular narrow complex tachycardia. A diagnosis of a concealed left lateral accessory pathway was made with an eccentric atrial activation sequence both during tachycardia and right ventricular (RV) pacing. The pathway w...

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Detalles Bibliográficos
Autores principales: Bansal, Raghav, Vadivelu, Ramalingam, Sternick, Eduardo Back, Lokhandwala, Yash
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2021
Materias:
EP / Device Rounds
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8414319/
https://www.ncbi.nlm.nih.gov/pubmed/34157426
http://dx.doi.org/10.1016/j.ipej.2021.05.010
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author Bansal, Raghav
Vadivelu, Ramalingam
Sternick, Eduardo Back
Lokhandwala, Yash
author_facet Bansal, Raghav
Vadivelu, Ramalingam
Sternick, Eduardo Back
Lokhandwala, Yash
author_sort Bansal, Raghav
collection PubMed
description A 16-year-old boy was referred for an electrophysiological study for documented regular narrow complex tachycardia. A diagnosis of a concealed left lateral accessory pathway was made with an eccentric atrial activation sequence both during tachycardia and right ventricular (RV) pacing. The pathway was mapped at the left posterior mitral vestibule during RV pacing, performed through the distal tip of the His bundle catheter pushed into right ventricular outflow tract. An unusual response to ventricular stimulation with alternation of QRS complex width and morphology was noted. The possible mechanisms are hereby discussed.
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spelling pubmed-84143192021-09-08 QRS alternans during right ventricular pacing while ablating a concealed left sided accessory pathway Bansal, Raghav Vadivelu, Ramalingam Sternick, Eduardo Back Lokhandwala, Yash Indian Pacing Electrophysiol J EP / Device Rounds A 16-year-old boy was referred for an electrophysiological study for documented regular narrow complex tachycardia. A diagnosis of a concealed left lateral accessory pathway was made with an eccentric atrial activation sequence both during tachycardia and right ventricular (RV) pacing. The pathway was mapped at the left posterior mitral vestibule during RV pacing, performed through the distal tip of the His bundle catheter pushed into right ventricular outflow tract. An unusual response to ventricular stimulation with alternation of QRS complex width and morphology was noted. The possible mechanisms are hereby discussed. Elsevier 2021-06-23 /pmc/articles/PMC8414319/ /pubmed/34157426 http://dx.doi.org/10.1016/j.ipej.2021.05.010 Text en © 2021 Indian Heart Rhythm Society. Production and hosting by Elsevier B.V. https://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 EP / Device Rounds
Bansal, Raghav
Vadivelu, Ramalingam
Sternick, Eduardo Back
Lokhandwala, Yash
QRS alternans during right ventricular pacing while ablating a concealed left sided accessory pathway
title QRS alternans during right ventricular pacing while ablating a concealed left sided accessory pathway
title_full QRS alternans during right ventricular pacing while ablating a concealed left sided accessory pathway
title_fullStr QRS alternans during right ventricular pacing while ablating a concealed left sided accessory pathway
title_full_unstemmed QRS alternans during right ventricular pacing while ablating a concealed left sided accessory pathway
title_short QRS alternans during right ventricular pacing while ablating a concealed left sided accessory pathway
title_sort qrs alternans during right ventricular pacing while ablating a concealed left sided accessory pathway
topic EP / Device Rounds
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8414319/
https://www.ncbi.nlm.nih.gov/pubmed/34157426
http://dx.doi.org/10.1016/j.ipej.2021.05.010
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