Abstract
Background: The regional distribution of the low-voltage zones (LVZs) may relate to the maintenance of atrial arrhythmias in the right atrium (RA). Objectives: The purpose of this study was to investigate the RA substrate characteristics in different types of atrial arrhythmias originating from RA and left atrium (LA). Methods: Forty-five patients (35 men, age = 62 ± 15 years) with RA atypical atrial flutter (n = 15, group 1), RA atrial fibrillation (AF; n = 15, no PV initiating foci, group 2), and LA AF (n = 1 5, no RA arrhythmias, group 3) referred for three-dimensional EnSite mapping were included. Voltage and activation maps were visualized. Results: The mean voltage of the RA was lower in group 2, and compared with group 3, a voltage reduction during atrial pacing was evident in groups 1 and 2. The fixed LVZs (independent of the rhythm) were mostly located along the lower crista terminalis (CT). A functional extension of the LVZ was located on the CT in 84% of patients, sinus venosa in 18%, and free-wall region in 27%, forming the borders of the slow conduction isthmus for the reentrant circuits. The number of slow conduction isthmuses was 1.3 ± 0.9, 2.2 ± 1.0, and 0.87 ± 0.74, for the groups 1-3 patients, respectively (P
| Original language | English |
|---|---|
| Pages (from-to) | 592-598 |
| Number of pages | 7 |
| Journal | Heart Rhythm |
| Volume | 6 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - May 2009 |
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Keywords
- Ablation
- Atrial fibrillation
- Atrial flutter
- Electrogram
- Voltage
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
- Physiology (medical)
Cite this
Role of the right atrial substrate in different types of atrial arrhythmias. / Lin, Yenn Jiang; Higa, Satoshi; Tai, Ching Tai; Chang, Shih Lin; Lee, Kun Tai; Lo, Li Wei; Ishigaki, Sugako; Tuan, Ta Chuan; Wongcharoen, Wanwarang; Hu, Yu Feng; Hsieh, Min Hsiung; Tsao, Hsuan Ming; Chen, Shih Ann.
In: Heart Rhythm, Vol. 6, No. 5, 05.2009, p. 592-598.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Role of the right atrial substrate in different types of atrial arrhythmias
AU - Lin, Yenn Jiang
AU - Higa, Satoshi
AU - Tai, Ching Tai
AU - Chang, Shih Lin
AU - Lee, Kun Tai
AU - Lo, Li Wei
AU - Ishigaki, Sugako
AU - Tuan, Ta Chuan
AU - Wongcharoen, Wanwarang
AU - Hu, Yu Feng
AU - Hsieh, Min Hsiung
AU - Tsao, Hsuan Ming
AU - Chen, Shih Ann
PY - 2009/5
Y1 - 2009/5
N2 - Background: The regional distribution of the low-voltage zones (LVZs) may relate to the maintenance of atrial arrhythmias in the right atrium (RA). Objectives: The purpose of this study was to investigate the RA substrate characteristics in different types of atrial arrhythmias originating from RA and left atrium (LA). Methods: Forty-five patients (35 men, age = 62 ± 15 years) with RA atypical atrial flutter (n = 15, group 1), RA atrial fibrillation (AF; n = 15, no PV initiating foci, group 2), and LA AF (n = 1 5, no RA arrhythmias, group 3) referred for three-dimensional EnSite mapping were included. Voltage and activation maps were visualized. Results: The mean voltage of the RA was lower in group 2, and compared with group 3, a voltage reduction during atrial pacing was evident in groups 1 and 2. The fixed LVZs (independent of the rhythm) were mostly located along the lower crista terminalis (CT). A functional extension of the LVZ was located on the CT in 84% of patients, sinus venosa in 18%, and free-wall region in 27%, forming the borders of the slow conduction isthmus for the reentrant circuits. The number of slow conduction isthmuses was 1.3 ± 0.9, 2.2 ± 1.0, and 0.87 ± 0.74, for the groups 1-3 patients, respectively (P
AB - Background: The regional distribution of the low-voltage zones (LVZs) may relate to the maintenance of atrial arrhythmias in the right atrium (RA). Objectives: The purpose of this study was to investigate the RA substrate characteristics in different types of atrial arrhythmias originating from RA and left atrium (LA). Methods: Forty-five patients (35 men, age = 62 ± 15 years) with RA atypical atrial flutter (n = 15, group 1), RA atrial fibrillation (AF; n = 15, no PV initiating foci, group 2), and LA AF (n = 1 5, no RA arrhythmias, group 3) referred for three-dimensional EnSite mapping were included. Voltage and activation maps were visualized. Results: The mean voltage of the RA was lower in group 2, and compared with group 3, a voltage reduction during atrial pacing was evident in groups 1 and 2. The fixed LVZs (independent of the rhythm) were mostly located along the lower crista terminalis (CT). A functional extension of the LVZ was located on the CT in 84% of patients, sinus venosa in 18%, and free-wall region in 27%, forming the borders of the slow conduction isthmus for the reentrant circuits. The number of slow conduction isthmuses was 1.3 ± 0.9, 2.2 ± 1.0, and 0.87 ± 0.74, for the groups 1-3 patients, respectively (P
KW - Ablation
KW - Atrial fibrillation
KW - Atrial flutter
KW - Electrogram
KW - Voltage
UR - http://www.scopus.com/inward/record.url?scp=64649099112&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=64649099112&partnerID=8YFLogxK
U2 - 10.1016/j.hrthm.2009.02.019
DO - 10.1016/j.hrthm.2009.02.019
M3 - Article
C2 - 19389645
AN - SCOPUS:64649099112
VL - 6
SP - 592
EP - 598
JO - Heart Rhythm
JF - Heart Rhythm
SN - 1547-5271
IS - 5
ER -