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Visualization of the Critical Isthmus by Tracking Delayed Potential in Edited Windows for Scar-Related Ventricular Tachycardia
BACKGROUND AND OBJECTIVES: Identifying the critical isthmus of slow conduction is crucial for successful treatment of scar-related ventricular tachycardia. Current 3D mapping is not designed for tracking the critical isthmus and may lead to a risk of extensive ablation. We edited the algorithm to tr...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Korean Society of Cardiology
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4720850/ https://www.ncbi.nlm.nih.gov/pubmed/26798386 http://dx.doi.org/10.4070/kcj.2016.46.1.56 |
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author | Kim, Ju Youn Shin, Woo-Seung Kim, Tae-Seok Kim, Sung-Hwan Kim, Ji-Hoon Jang, Sung-Won Pak, Hui-Nam Nam, Gi-Byoung Lee, Man Young Rho, Tai-Ho Oh, Yong Seog |
author_facet | Kim, Ju Youn Shin, Woo-Seung Kim, Tae-Seok Kim, Sung-Hwan Kim, Ji-Hoon Jang, Sung-Won Pak, Hui-Nam Nam, Gi-Byoung Lee, Man Young Rho, Tai-Ho Oh, Yong Seog |
author_sort | Kim, Ju Youn |
collection | PubMed |
description | BACKGROUND AND OBJECTIVES: Identifying the critical isthmus of slow conduction is crucial for successful treatment of scar-related ventricular tachycardia. Current 3D mapping is not designed for tracking the critical isthmus and may lead to a risk of extensive ablation. We edited the algorithm to track the delayed potential in order to visualize the isthmus and compared the edited map with a conventional map. SUBJECTS AND METHODS: We marked every point that showed delayed potential with blue color. After substrate mapping, we edited to reset the annotation from true ventricular potential to delayed potential and then changed the window of interest from the conventional zone (early, 50-60%; late, 40-50% from peak of QRS) to the edited zone (early, 80-90%; late, 10-20%) for every blue point. Finally, we compared the propagation maps before and after editing. RESULTS: We analyzed five scar-related ventricular tachycardia cases. In the propagation maps, the resetting map showed the critical isthmus and entrance and exit sites of tachycardia that showed figure 8 reentry. However, conventional maps only showed the earliest ventricular activation sites and searched for focal tachycardia. All of the tachycardia cases were terminated by ablating the area around the isthmus. CONCLUSION: Identifying the channel and direction of the critical isthmus by a new editing method to track delayed potential is essential in scar-related tachycardia. |
format | Online Article Text |
id | pubmed-4720850 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | The Korean Society of Cardiology |
record_format | MEDLINE/PubMed |
spelling | pubmed-47208502016-01-21 Visualization of the Critical Isthmus by Tracking Delayed Potential in Edited Windows for Scar-Related Ventricular Tachycardia Kim, Ju Youn Shin, Woo-Seung Kim, Tae-Seok Kim, Sung-Hwan Kim, Ji-Hoon Jang, Sung-Won Pak, Hui-Nam Nam, Gi-Byoung Lee, Man Young Rho, Tai-Ho Oh, Yong Seog Korean Circ J Original Article BACKGROUND AND OBJECTIVES: Identifying the critical isthmus of slow conduction is crucial for successful treatment of scar-related ventricular tachycardia. Current 3D mapping is not designed for tracking the critical isthmus and may lead to a risk of extensive ablation. We edited the algorithm to track the delayed potential in order to visualize the isthmus and compared the edited map with a conventional map. SUBJECTS AND METHODS: We marked every point that showed delayed potential with blue color. After substrate mapping, we edited to reset the annotation from true ventricular potential to delayed potential and then changed the window of interest from the conventional zone (early, 50-60%; late, 40-50% from peak of QRS) to the edited zone (early, 80-90%; late, 10-20%) for every blue point. Finally, we compared the propagation maps before and after editing. RESULTS: We analyzed five scar-related ventricular tachycardia cases. In the propagation maps, the resetting map showed the critical isthmus and entrance and exit sites of tachycardia that showed figure 8 reentry. However, conventional maps only showed the earliest ventricular activation sites and searched for focal tachycardia. All of the tachycardia cases were terminated by ablating the area around the isthmus. CONCLUSION: Identifying the channel and direction of the critical isthmus by a new editing method to track delayed potential is essential in scar-related tachycardia. The Korean Society of Cardiology 2016-01 2015-11-11 /pmc/articles/PMC4720850/ /pubmed/26798386 http://dx.doi.org/10.4070/kcj.2016.46.1.56 Text en Copyright © 2016 The Korean Society of Cardiology http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article Kim, Ju Youn Shin, Woo-Seung Kim, Tae-Seok Kim, Sung-Hwan Kim, Ji-Hoon Jang, Sung-Won Pak, Hui-Nam Nam, Gi-Byoung Lee, Man Young Rho, Tai-Ho Oh, Yong Seog Visualization of the Critical Isthmus by Tracking Delayed Potential in Edited Windows for Scar-Related Ventricular Tachycardia |
title | Visualization of the Critical Isthmus by Tracking Delayed Potential in Edited Windows for Scar-Related Ventricular Tachycardia |
title_full | Visualization of the Critical Isthmus by Tracking Delayed Potential in Edited Windows for Scar-Related Ventricular Tachycardia |
title_fullStr | Visualization of the Critical Isthmus by Tracking Delayed Potential in Edited Windows for Scar-Related Ventricular Tachycardia |
title_full_unstemmed | Visualization of the Critical Isthmus by Tracking Delayed Potential in Edited Windows for Scar-Related Ventricular Tachycardia |
title_short | Visualization of the Critical Isthmus by Tracking Delayed Potential in Edited Windows for Scar-Related Ventricular Tachycardia |
title_sort | visualization of the critical isthmus by tracking delayed potential in edited windows for scar-related ventricular tachycardia |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4720850/ https://www.ncbi.nlm.nih.gov/pubmed/26798386 http://dx.doi.org/10.4070/kcj.2016.46.1.56 |
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