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Prevalence and Characteristics of Atrial Tachycardia From Noncoronary Aortic Cusp During Atrial Fibrillation Catheter Ablation

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Author(s)
Myung-Jin ChaJun KimYoon Jung ParkMin Soo ChoHyoung-Seob ParkSoonil KwonYoung Soo LeeJinhee AhnHyung-Oh ChoiJong-Sung ParkYouMi HwangJin Hee ChoiKi-Won HwangYoo-Ri KimSeongwook HanSeil OhGi-Byoung NamKee-Joon ChoiHui-Nam Pak
Keimyung Author(s)
Park, Hyoung Seob
Department
Dept. of Internal Medicine (내과학)
Journal Title
Korean Circ J
Issued Date
2022
Volume
52
Issue
7
Keyword
Atrial fibrillationAblation techniquesTachycardia
Abstract
Background and Objectives:
Atrial tachycardias (ATs) from noncoronary aortic cusp (NCC) uncovered after radiofrequency ablation for atrial fibrillation (AF) are rarely reported. This study was conducted to investigate the prevalence and clinical characteristics of NCC ATs detected during AF ablation and compare their characteristics with de novo NCC ATs without AF.

Methods:
Consecutive patients who underwent radiofrequency catheter ablation for AF were reviewed from the multicenter AF ablation registry of 11 tertiary hospitals. The clinical and electrophysiological characteristics of NCC AT newly detected during AF ablation were compared with its comparators (de novo NCC AT ablation cases without AF).

Results:
Among 10,178 AF cases, including 1,301 redo ablation cases, 8 (0.08%) NCC AT cases were discovered after pulmonary vein isolation (PVI; 0.07% in first ablation and 0.15% in redo ablation cases). All ATs were reproducibly inducible spontaneously or with programmed atrial stimulation without isoproterenol infusion. The P-wave morphological features of tachycardia were variable depending on the case, and most cases exhibited 1:1 atrioventricular conduction. AF recurrence rate after PVI and NCC AT successful ablation was 12.5% (1 of 8). Tachycardia cycle length was shorter than that of 17 de novo ATs from NCC (303 versus 378, p=0.012). No AV block occurred during and after successful AT ablation.

Conclusions:
Uncommon NCC ATs (0.08% in AF ablation cases) uncovered after PVI, showing different characteristics compared to de-novo NCC ATs, should be suspected irrespective of P-wave morphologies when AT shows broad propagation from the anterior interatrial septum.
Keimyung Author(s)(Kor)
박형섭
Publisher
School of Medicine (의과대학)
Citation
Myung-Jin Cha et al. (2022). Prevalence and Characteristics of Atrial Tachycardia From Noncoronary Aortic Cusp During Atrial Fibrillation Catheter Ablation. Korean Circ J, 52(7), 513–526. doi: 10.4070/kcj.2021.0388
Type
Article
ISSN
1738-5555
Source
https://e-kcj.org/DOIx.php?id=10.4070/kcj.2021.0388
DOI
10.4070/kcj.2021.0388
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/44338
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Internal Medicine (내과학)
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