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Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen and the Interuniversity Cardiology Institute Netherlands, Utrecht, the Netherlands
I.C. Van Gelder Department of Cardiology, Thoraxcenter, University Medical Center Groningen, University of Groningen, PO Box 30.001, 9700 RB Groningen, the Netherlands
Aim. To investigate long-term outcome and to determine predictors of successful pulmonary vein isolation (PVI) in patients with symptomatic paroxysmal or persistent atrial fibrillation (AF) who are refractory or intolerant to antiarrhythmic drugs.
Background. The treatment of AF has traditionally been pharmacological aimed at rate or rhythm control. However, rhythm control remains difficult to establish. PVI is reported to be effective in selected patient groups.
Methods. Ninety-nine consecutive patients with a mean age of 54±10 years who had paroxysmal or persistent AF were treated in the University Medical Center Groningen. All patients underwent PVI by the same electrophysiologist. Successful PVI was defined as absence of AF on Holter or electrocardiogram (ECG), and no symptoms of AF.
Results. After six months of follow-up, 60 (61%) patients were free of AF episodes, both on 96-hour Holter monitoring and on ECGs, and had no symptoms related to AF. Thirty-nine of these 60 patients (65%) were no longer treated with any class I or III antiarrhythmic drugs. Independent determinants of successful PVI were paroxysmal AF (OR 18 [3.5–93], p=0.001), and left pulmonary vein ablation time >55 minutes (OR 15 [2.7–81], p=0.002). Left atrial (parasternal view 42±6 vs. 40±5 mm, p<0.05 and apical view 61±9 vs. 58±8 mm, p<0.05) and right atrial (59±7 vs. 56±5 mm, p<0.05) sizes decreased significantly in the successfully treated patients after six months of follow-up.
Conclusion. Independent determinants of a successful outcome after PVI are paroxysmal AF and a longer left atrial ablation time. (Neth Heart J 2009;17:366–72.)
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Pulmonary vein isolation of symptomatic refractory paroxysmal and persistent atrial fibrillation
A single centre and single operator experience in the Netherlands
E. S. Tan
B. A. Mulder
A. C. P. Wiesfeld
I. C. Van Gelder
- Bohn Stafleu van Loghum