作者: Teiichi Yamane , Taro Date , Yasuko Kanzaki , Keiichi Inada , Seiichiro Matsuo
DOI: 10.1253/CIRCJ.71.753
关键词:
摘要: Background The limited efficacy and complications of segmental ostial pulmonary vein isolation (PVI) for treating atrial fibrillation (AF) have been discussed so, in the present study feasibility efficiency performing (PV) antrum to treat AF were assessed. Methods Results A total 187 patients with drug-refractory (paroxysmal 120, persistent 67) underwent PVI guided by circumferential 20-electrode catheters (Lasso). Radiofrequency (RF) current was delivered either at ostium using a regular Lasso (15-20 mm diameter, 70 patients: Group 1) or larger (25-30 117 2). significantly wider region had be ablated, longer RF application time, isolate all 4 PVs 2 than 1 patients. Although rate recurrence after initial session equal both groups, greater number free from mean 1.4 procedures (93% vs 76% paroxysmal AF, 78% 48% AF). Conclusions Segmental antral large-sized found more effective safer treatment AF. (Circ J 2007; 71: 753 - 760)