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  • Title: Long-term rhythm control of drug-refractory atrial fibrillation with "hybrid therapy" incorporating dual-site right atrial pacing, antiarrhythmic drugs, and right atrial ablation.
    Author: Madan N, Saksena S.
    Journal: Am J Cardiol; 2004 Mar 01; 93(5):569-75. PubMed ID: 14996581.
    Abstract:
    We evaluated the long-term efficacy, safety, and applicability of a "hybrid" therapy strategy for rhythm control in atrial fibrillation (AF), incorporating dual-site right atrial pacing, antiarrhythmic drugs, and right atrial ablation. One hundred thirteen patients (paroxysmal AF [n = 70], persistent/permanent AF [n = 43]) with refractory symptomatic AF were treated with this strategy and followed for 1 to 81 months (mean 30 +/- 23). All-cause mortality, AF recurrences, and progression to permanent AF were monitored and recorded by implanted device data logs. There was no procedural mortality. Rhythm control was achieved in 90% of all patients at 3 and 5 years, with comparable efficacy in subpopulations with paroxysmal (98%), persistent, or permanent AF (87%, p >2). Overall survival was 84% at 3 years and 80% at 5 years, and was higher in patients with paroxysmal AF than in patients with persistent or permanent AF (86% vs 67% at 4 years, p <0.001). Patients with persistent or permanent AF had a greater need for cardioversion (p <0.004) and right atrial ablation (p <0.04) than patients with paroxysmal AF to achieve comparable rhythm control. A hybrid therapy strategy can provide safe and effective long-term rhythm control in patients with drug-refractory AF, and can be implemented in subpopulations presenting with paroxysmal, persistent, or permanent AF.
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