Acute and Long-Term Effects of Atrioventricular Junction Ablation and VVIR Pacemaker in Symptomatic Patients with Chronic Lone Atrial Fibrillation and Normal Ventricular Response
AV Junction Ablation and Pacing. Introduction: The precise role of irregular ventricular response in atrial fibrillation (AF) has not been fully elucidated. This study examined the independent effects of rhythm regularity in patients with chronic AF. Methods and Results: This study included 50 patie...
Saved in:
Published in | Journal of cardiovascular electrophysiology Vol. 12; no. 3; pp. 303 - 309 |
---|---|
Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Blackwell Science Inc
01.03.2001
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | AV Junction Ablation and Pacing.
Introduction: The precise role of irregular ventricular response in atrial fibrillation (AF) has not been fully elucidated. This study examined the independent effects of rhythm regularity in patients with chronic AF.
Methods and Results: This study included 50 patients who had chronic lone AF and a normal ventricular rate. Among these patients, 21 who underwent AV junction ablation and implantation of a VVIR pacemaker constituted the ablation group; the other 29 patients were the medical group. Acute hemodynamic findings were measured in 21 ablation patients before ablation (during AF, baseline) and 15 minutes after ablation (during right ventricular pacing). Compared with baseline data, ablation and pacing therapy increased cardiac output (4.7 ± 0.8 vs 5.2 ± 0.9 L/min; P = 0.05), decreased pulmonary capillary wedge pressure (16 ± 5 vs 13 ± 4 mmHg; P = 0.001), and decreased left ventricular end‐diastolic pressure (14 ± 4 vs 11 ± 3 mmHg; P < 0.05). After 12 months, the ablation group patients showed lower scores in general quality of life (−20%; P < 0.001), overall symptoms (−24%; P < 0.001), overall activity scale (−23%; P = 0.004), and significant increase of left ventricular ejection fraction (44% ± 6% vs 49% ± 5%; P = 0.02) by echocardiographic examination.
Conclusion: AV junction ablation and pacing in patients with chronic AF and normal ventricular response may confer acute and long‐term benefits beyond rate control by eliminating rhythm irregularity. |
---|---|
Bibliography: | ArticleID:JCE303 istex:D450630DD5EB5CC085B4267FCDC3A5715DD2CFEE ark:/67375/WNG-8D9HK5FS-7 Supported in part by grants from Chung‐Shan Medical Council (CSMC 87‐OM‐B011), Taichung, Taiwan. ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 1045-3873 1540-8167 |
DOI: | 10.1046/j.1540-8167.2001.00303.x |