Segmental Pulmonary Vein Antrum Isolation Using the "Large-Size" Lasso Catheter in Patients With Atrial Fibrillation
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- Yamane Teiichi
- Department of Cardiology, Jikei University School of Medicine
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- Date Taro
- Department of Cardiology, Jikei University School of Medicine
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- Kanzaki Yasuko
- Department of Cardiology, Jikei University School of Medicine
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- Inada Keiichi
- Department of Cardiology, Jikei University School of Medicine
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- Matsuo Seiichiro
- Department of Cardiology, Jikei University School of Medicine
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- Shibayama Kenri
- Department of Cardiology, Jikei University School of Medicine
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- Miyanaga Satoru
- Department of Cardiology, Jikei University School of Medicine
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- Miyazaki Hidekazu
- Department of Cardiology, Jikei University School of Medicine
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- Sugimoto Ken-ichi
- Department of Cardiology, Jikei University School of Medicine
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- Mochizuki Seibu
- Department of Cardiology, Jikei University School of Medicine
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Abstract
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 the feasibility and efficiency of performing segmental pulmonary vein (PV) antrum isolation to treat AF were assessed. Methods and Results A total of 187 patients with drug-refractory AF (paroxysmal 120, persistent 67) underwent segmental PVI guided by circumferential 20-electrode catheters (Lasso). Radiofrequency (RF) current was delivered either at the ostium using a regular Lasso (15-20 mm in diameter, 70 patients: Group 1) or at the antrum using a larger Lasso (25-30 mm in diameter, 117 patients: Group 2). A significantly wider region had to be ablated, with a longer RF application time, to isolate all 4 PVs in Group 2 patients than in Group 1 patients. Although the rate of recurrence of AF after the initial session was equal in both groups, a significantly greater number of patients were free from AF after a mean of 1.4 procedures in Group 2 than in Group 1 (93% vs 76% for paroxysmal AF, 78% vs 48% for persistent AF). Conclusions Segmental antral PVI using large-sized Lasso catheters was found to be more effective and safer than ostial PVI for the treatment of AF. (Circ J 2007; 71: 753 - 760)<br>
Journal
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- Circulation Journal
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Circulation Journal 71 (5), 753-760, 2007
The Japanese Circulation Society
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Details 詳細情報について
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- CRID
- 1390001205104915584
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- NII Article ID
- 110006273615
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- NII Book ID
- AA11591968
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- COI
- 1:STN:280:DC%2BD2s3kvValug%3D%3D
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- ISSN
- 13474820
- 13469843
- http://id.crossref.org/issn/13469843
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- PubMed
- 17457004
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed