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Treatment strategy and endpoint of catheter ablation for bi‐atrial tachycardia after substrate modification ablation in a low voltage zone of the left atrial anterior wall: Long‐term results
BACKGROUND: The termination of bi‐atrial tachycardia (BiAT) via the ablation of the Bachmann's bundle (BB) and mitral isthmus (MI) has been previously reported; however, the strategy and long‐term results of catheter ablation for BiAT remain unclear. METHODS: The data of nine patients with BiAT...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8339115/ https://www.ncbi.nlm.nih.gov/pubmed/34386126 http://dx.doi.org/10.1002/joa3.12558 |
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author | Arai, Tomoyuki Hojo, Rintaro Tokioka, Sayuri Kitamura, Takeshi Fukamizu, Seiji |
author_facet | Arai, Tomoyuki Hojo, Rintaro Tokioka, Sayuri Kitamura, Takeshi Fukamizu, Seiji |
author_sort | Arai, Tomoyuki |
collection | PubMed |
description | BACKGROUND: The termination of bi‐atrial tachycardia (BiAT) via the ablation of the Bachmann's bundle (BB) and mitral isthmus (MI) has been previously reported; however, the strategy and long‐term results of catheter ablation for BiAT remain unclear. METHODS: The data of nine patients with BiAT who underwent low voltage zone (LVZ) ablation of the left atrial anterior wall (LAAW) after pulmonary vein isolation were reviewed. Patients with a P wave duration <100 ms during sinus rhythm underwent MI ablation and those with a P wave duration >100 ms underwent BB ablation. RESULTS: MI ablation was performed in three patients and six patients underwent BB ablation. The difference in the P wave duration before and after ablation was significantly different between the ablation sites (MI group: 5.0 ms difference; BB group; 38.5 ms difference; P = .024). The P wave duration was prolonged by >20 ms and was 120 ms or more after ablation in 5/6 patients who underwent BB ablation. The total recurrence rate was 11.0% (mean: 26.9 months). CONCLUSION: The recurrence of BiAT after MI or BB ablation is low. When BB ablation was performed, the P wave duration was prolonged by >20 ms and was at least 120 ms after the ablation, which may be an endpoint that can be used to measure the success of the ablation. |
format | Online Article Text |
id | pubmed-8339115 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-83391152021-08-11 Treatment strategy and endpoint of catheter ablation for bi‐atrial tachycardia after substrate modification ablation in a low voltage zone of the left atrial anterior wall: Long‐term results Arai, Tomoyuki Hojo, Rintaro Tokioka, Sayuri Kitamura, Takeshi Fukamizu, Seiji J Arrhythm Original Articles BACKGROUND: The termination of bi‐atrial tachycardia (BiAT) via the ablation of the Bachmann's bundle (BB) and mitral isthmus (MI) has been previously reported; however, the strategy and long‐term results of catheter ablation for BiAT remain unclear. METHODS: The data of nine patients with BiAT who underwent low voltage zone (LVZ) ablation of the left atrial anterior wall (LAAW) after pulmonary vein isolation were reviewed. Patients with a P wave duration <100 ms during sinus rhythm underwent MI ablation and those with a P wave duration >100 ms underwent BB ablation. RESULTS: MI ablation was performed in three patients and six patients underwent BB ablation. The difference in the P wave duration before and after ablation was significantly different between the ablation sites (MI group: 5.0 ms difference; BB group; 38.5 ms difference; P = .024). The P wave duration was prolonged by >20 ms and was 120 ms or more after ablation in 5/6 patients who underwent BB ablation. The total recurrence rate was 11.0% (mean: 26.9 months). CONCLUSION: The recurrence of BiAT after MI or BB ablation is low. When BB ablation was performed, the P wave duration was prolonged by >20 ms and was at least 120 ms after the ablation, which may be an endpoint that can be used to measure the success of the ablation. John Wiley and Sons Inc. 2021-05-24 /pmc/articles/PMC8339115/ /pubmed/34386126 http://dx.doi.org/10.1002/joa3.12558 Text en © 2021 The Authors. Journal of Arrhythmia published by John Wiley & Sons Australia, Ltd on behalf of Japanese Heart Rhythm Society https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Articles Arai, Tomoyuki Hojo, Rintaro Tokioka, Sayuri Kitamura, Takeshi Fukamizu, Seiji Treatment strategy and endpoint of catheter ablation for bi‐atrial tachycardia after substrate modification ablation in a low voltage zone of the left atrial anterior wall: Long‐term results |
title | Treatment strategy and endpoint of catheter ablation for bi‐atrial tachycardia after substrate modification ablation in a low voltage zone of the left atrial anterior wall: Long‐term results |
title_full | Treatment strategy and endpoint of catheter ablation for bi‐atrial tachycardia after substrate modification ablation in a low voltage zone of the left atrial anterior wall: Long‐term results |
title_fullStr | Treatment strategy and endpoint of catheter ablation for bi‐atrial tachycardia after substrate modification ablation in a low voltage zone of the left atrial anterior wall: Long‐term results |
title_full_unstemmed | Treatment strategy and endpoint of catheter ablation for bi‐atrial tachycardia after substrate modification ablation in a low voltage zone of the left atrial anterior wall: Long‐term results |
title_short | Treatment strategy and endpoint of catheter ablation for bi‐atrial tachycardia after substrate modification ablation in a low voltage zone of the left atrial anterior wall: Long‐term results |
title_sort | treatment strategy and endpoint of catheter ablation for bi‐atrial tachycardia after substrate modification ablation in a low voltage zone of the left atrial anterior wall: long‐term results |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8339115/ https://www.ncbi.nlm.nih.gov/pubmed/34386126 http://dx.doi.org/10.1002/joa3.12558 |
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