Unidirectional block on the mitral isthmus during radiofrequency application for perimitral atrial tachycardia
We present the case of a patient who developed regular, narrow QRS tachycardia after ablation for long-standing persistent atrial fibrillation. During the electrophysiological study, this tachycardia was diagnosed as macroreentrant atrial tachycardia circulating around the mitral annulus. Catheter a...
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2013-10-01
|
| Series: | Journal of Arrhythmia |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1880427612001822 |
| _version_ | 1818508325999869952 |
|---|---|
| author | Seigo Yamashita, MD Teiichi Yamane, MD Seiichiro Matsuo, MD Keiichi Ito, MD Ryohsuke Narui, MD Mika Hioki, MD Shin-ichi Tanigawa, MD Michifumi Tokuda, MD Keiichi Inada, MD Taro Date, MD Ken-ichi Sugimoto, MD Michihiro Yoshimura, MD |
| author_facet | Seigo Yamashita, MD Teiichi Yamane, MD Seiichiro Matsuo, MD Keiichi Ito, MD Ryohsuke Narui, MD Mika Hioki, MD Shin-ichi Tanigawa, MD Michifumi Tokuda, MD Keiichi Inada, MD Taro Date, MD Ken-ichi Sugimoto, MD Michihiro Yoshimura, MD |
| author_sort | Seigo Yamashita, MD |
| collection | DOAJ |
| description | We present the case of a patient who developed regular, narrow QRS tachycardia after ablation for long-standing persistent atrial fibrillation. During the electrophysiological study, this tachycardia was diagnosed as macroreentrant atrial tachycardia circulating around the mitral annulus. Catheter ablation was performed to treat the tachycardia by targeting the linear region between the annulus and the left inferior pulmonary vein. Although linear radiofrequency application along the mitral isthmus (MI) line resulted in the termination of this tachycardia, a unidirectional conduction block was observed through the MI. Bidirectional conduction block was subsequently achieved by delivering supplemental radiofrequency energies at the gap on the MI. |
| first_indexed | 2024-12-10T22:30:10Z |
| format | Article |
| id | doaj.art-6612ca66559f4907b3db2e9607bdf34d |
| institution | Directory Open Access Journal |
| issn | 1880-4276 |
| language | English |
| last_indexed | 2024-12-10T22:30:10Z |
| publishDate | 2013-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Arrhythmia |
| spelling | doaj.art-6612ca66559f4907b3db2e9607bdf34d2022-12-22T01:31:04ZengWileyJournal of Arrhythmia1880-42762013-10-0129527027410.1016/j.joa.2012.12.006Unidirectional block on the mitral isthmus during radiofrequency application for perimitral atrial tachycardiaSeigo Yamashita, MDTeiichi Yamane, MDSeiichiro Matsuo, MDKeiichi Ito, MDRyohsuke Narui, MDMika Hioki, MDShin-ichi Tanigawa, MDMichifumi Tokuda, MDKeiichi Inada, MDTaro Date, MDKen-ichi Sugimoto, MDMichihiro Yoshimura, MDWe present the case of a patient who developed regular, narrow QRS tachycardia after ablation for long-standing persistent atrial fibrillation. During the electrophysiological study, this tachycardia was diagnosed as macroreentrant atrial tachycardia circulating around the mitral annulus. Catheter ablation was performed to treat the tachycardia by targeting the linear region between the annulus and the left inferior pulmonary vein. Although linear radiofrequency application along the mitral isthmus (MI) line resulted in the termination of this tachycardia, a unidirectional conduction block was observed through the MI. Bidirectional conduction block was subsequently achieved by delivering supplemental radiofrequency energies at the gap on the MI.http://www.sciencedirect.com/science/article/pii/S1880427612001822Perimitral tachycardiaCatheter ablationUnidirectional conduction block |
| spellingShingle | Seigo Yamashita, MD Teiichi Yamane, MD Seiichiro Matsuo, MD Keiichi Ito, MD Ryohsuke Narui, MD Mika Hioki, MD Shin-ichi Tanigawa, MD Michifumi Tokuda, MD Keiichi Inada, MD Taro Date, MD Ken-ichi Sugimoto, MD Michihiro Yoshimura, MD Unidirectional block on the mitral isthmus during radiofrequency application for perimitral atrial tachycardia Journal of Arrhythmia Perimitral tachycardia Catheter ablation Unidirectional conduction block |
| title | Unidirectional block on the mitral isthmus during radiofrequency application for perimitral atrial tachycardia |
| title_full | Unidirectional block on the mitral isthmus during radiofrequency application for perimitral atrial tachycardia |
| title_fullStr | Unidirectional block on the mitral isthmus during radiofrequency application for perimitral atrial tachycardia |
| title_full_unstemmed | Unidirectional block on the mitral isthmus during radiofrequency application for perimitral atrial tachycardia |
| title_short | Unidirectional block on the mitral isthmus during radiofrequency application for perimitral atrial tachycardia |
| title_sort | unidirectional block on the mitral isthmus during radiofrequency application for perimitral atrial tachycardia |
| topic | Perimitral tachycardia Catheter ablation Unidirectional conduction block |
| url | http://www.sciencedirect.com/science/article/pii/S1880427612001822 |
| work_keys_str_mv | AT seigoyamashitamd unidirectionalblockonthemitralisthmusduringradiofrequencyapplicationforperimitralatrialtachycardia AT teiichiyamanemd unidirectionalblockonthemitralisthmusduringradiofrequencyapplicationforperimitralatrialtachycardia AT seiichiromatsuomd unidirectionalblockonthemitralisthmusduringradiofrequencyapplicationforperimitralatrialtachycardia AT keiichiitomd unidirectionalblockonthemitralisthmusduringradiofrequencyapplicationforperimitralatrialtachycardia AT ryohsukenaruimd unidirectionalblockonthemitralisthmusduringradiofrequencyapplicationforperimitralatrialtachycardia AT mikahiokimd unidirectionalblockonthemitralisthmusduringradiofrequencyapplicationforperimitralatrialtachycardia AT shinichitanigawamd unidirectionalblockonthemitralisthmusduringradiofrequencyapplicationforperimitralatrialtachycardia AT michifumitokudamd unidirectionalblockonthemitralisthmusduringradiofrequencyapplicationforperimitralatrialtachycardia AT keiichiinadamd unidirectionalblockonthemitralisthmusduringradiofrequencyapplicationforperimitralatrialtachycardia AT tarodatemd unidirectionalblockonthemitralisthmusduringradiofrequencyapplicationforperimitralatrialtachycardia AT kenichisugimotomd unidirectionalblockonthemitralisthmusduringradiofrequencyapplicationforperimitralatrialtachycardia AT michihiroyoshimuramd unidirectionalblockonthemitralisthmusduringradiofrequencyapplicationforperimitralatrialtachycardia |