Tachycardia cycle length alternans caused by alternate conduction velocity on the slow conduction zone in a postoperative scar‐related atrial tachycardia

The underlying mechanism for stable beat‐to‐beat cycle length variability (CL alternans) in scar‐related atrial tachycardia (AT) had not been elucidated clearly. We described a case with postoperative dual‐loop reentrant AT in right atrium. When the loop depended on cavo‐tricuspid isthmus was blocke...

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Autores principales: Su, Chen, Liu, Menghui, Ma, Yuedong, Wang, Lichun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Case Reports
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6595469/
https://www.ncbi.nlm.nih.gov/pubmed/31293709
http://dx.doi.org/10.1002/joa3.12177
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author Su, Chen
Liu, Menghui
Ma, Yuedong
Wang, Lichun
author_facet Su, Chen
Liu, Menghui
Ma, Yuedong
Wang, Lichun
author_sort Su, Chen
collection PubMed
description The underlying mechanism for stable beat‐to‐beat cycle length variability (CL alternans) in scar‐related atrial tachycardia (AT) had not been elucidated clearly. We described a case with postoperative dual‐loop reentrant AT in right atrium. When the loop depended on cavo‐tricuspid isthmus was blocked by ablation, the AT transformed into a CL alternate tachycardia. High density and resolution mapping revealed that the CL alternans was caused by the alternate conduction velocities at the slow conduct region. A further ablation line was created from the slow conduction zone to the inferior vena cave, and afterward no AT was inducible.
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spelling pubmed-65954692019-07-10 Tachycardia cycle length alternans caused by alternate conduction velocity on the slow conduction zone in a postoperative scar‐related atrial tachycardia Su, Chen Liu, Menghui Ma, Yuedong Wang, Lichun J Arrhythm Case Reports The underlying mechanism for stable beat‐to‐beat cycle length variability (CL alternans) in scar‐related atrial tachycardia (AT) had not been elucidated clearly. We described a case with postoperative dual‐loop reentrant AT in right atrium. When the loop depended on cavo‐tricuspid isthmus was blocked by ablation, the AT transformed into a CL alternate tachycardia. High density and resolution mapping revealed that the CL alternans was caused by the alternate conduction velocities at the slow conduct region. A further ablation line was created from the slow conduction zone to the inferior vena cave, and afterward no AT was inducible. John Wiley and Sons Inc. 2019-03-28 /pmc/articles/PMC6595469/ /pubmed/31293709 http://dx.doi.org/10.1002/joa3.12177 Text en © 2019 The Authors. Journal of Arrhythmia published by John Wiley & Sons Australia, Ltd on behalf of the Japanese Heart Rhythm Society. This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
spellingShingle Case Reports
Su, Chen
Liu, Menghui
Ma, Yuedong
Wang, Lichun
Tachycardia cycle length alternans caused by alternate conduction velocity on the slow conduction zone in a postoperative scar‐related atrial tachycardia
title Tachycardia cycle length alternans caused by alternate conduction velocity on the slow conduction zone in a postoperative scar‐related atrial tachycardia
title_full Tachycardia cycle length alternans caused by alternate conduction velocity on the slow conduction zone in a postoperative scar‐related atrial tachycardia
title_fullStr Tachycardia cycle length alternans caused by alternate conduction velocity on the slow conduction zone in a postoperative scar‐related atrial tachycardia
title_full_unstemmed Tachycardia cycle length alternans caused by alternate conduction velocity on the slow conduction zone in a postoperative scar‐related atrial tachycardia
title_short Tachycardia cycle length alternans caused by alternate conduction velocity on the slow conduction zone in a postoperative scar‐related atrial tachycardia
title_sort tachycardia cycle length alternans caused by alternate conduction velocity on the slow conduction zone in a postoperative scar‐related atrial tachycardia
topic Case Reports
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6595469/
https://www.ncbi.nlm.nih.gov/pubmed/31293709
http://dx.doi.org/10.1002/joa3.12177
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AT mayuedong tachycardiacyclelengthalternanscausedbyalternateconductionvelocityontheslowconductionzoneinapostoperativescarrelatedatrialtachycardia
AT wanglichun tachycardiacyclelengthalternanscausedbyalternateconductionvelocityontheslowconductionzoneinapostoperativescarrelatedatrialtachycardia

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