Linear ablation and circumferential isolation of pulmonary veins for atrial fibrillation guided by non-contact 3-dimensional mapping system.
- Author:
Zhi-hui ZHANG
1
;
Yu CAO
;
Mao OU-YANG
;
Kan YANG
;
Meng-xi ZHANG
Author Information
1. Department of Cardiology,Third Xiangya Hospital,Central South University,Changsha 410013,China.
- Publication Type:Journal Article
- MeSH:
Adult;
Aged;
Atrial Fibrillation;
surgery;
Catheter Ablation;
methods;
Female;
Humans;
Imaging, Three-Dimensional;
Male;
Middle Aged;
Pulmonary Veins;
surgery;
Treatment Outcome
- From:
Journal of Central South University(Medical Sciences)
2007;32(5):904-908
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To study the feasibility, safety, effectiveness of linear ablation and circumferential isolation of pulmonary veins for atrial fibrillation (AF) guided by 3-dimensional mapping system.
METHODS:Twenty-eight consecutive patients with drug refractory paroxysmal and persistent AF were included in this study. Real-time 3-dimensional left atrial (LA) and pulmonary veins (PVs) maps were constructed through 3-dimensional mapping system (Ensite NavX) in all patients. Pulmonary vein isolation was performed by encircling the left and right sides of PVs at 1 to 2 cm away from the ostium of PVs. The endpoint of ablation included: All circum PVs ablation lines finished; all PVs were isolated; and non-inducibility of AF was observed.
RESULTS:All 28 patients reached the endpoint of ablation completely. The mean procedure time and fluoroscopy time was (161.3+/-23.2) min and (38.0+/-6.8) min, respectively. During the 6 approximately 17 month follow-up, 20 patients (71%) were free of AF without any antiarrhythmic drugs. Recurrence of AF was found in the other 8 patients (29%): Two were treated with amiodarone and 6 repeated ablation. After the second ablation, 4 were free of AF and 2 recurrence were treated with amiodarone. No complications occurred during the procedure and the follow-up.
CONCLUSION:Linear ablation and circumferential isolation of pulmonary veins for atrial fibrillation (AF) guided by 3-dimensional mapping system is effective and safe. But the long-term outcome remains to be investigated.
