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- W2049014906 abstract "Background —Atrioventricular (AV) node ablation and pacing has become accepted therapy for drug-refractory paroxysmal atrial fibrillation (PAF). However, few data demonstrate its superiority over continued medical therapy. The influence of pacing mode and mode-switch algorithm has not been investigated. Methods and Results —Symptomatic patients who had tried ≥2 drugs for PAF were randomized to continue medical therapy (n=19) or AV junction ablation and implantation of dual-chamber mode-switching (DDDR/MS) pacemakers (slow algorithm [n=19] or fast algorithm [n=18]). Follow-up over 18 weeks was at 6-week intervals and used quality-of-life questionnaires (Psychological General Well Being [PGWB], McMaster Health Index [MHI], cardiac symptom score), exercise testing, echocardiography, and Holter monitoring. Paced patients were randomized to DDDR/MS or VVIR and subsequently crossed over. Ablation and DDDR/MS pacing produced better scores than drug therapy for overall symptoms (−41%, P <0.01), palpitations (−58%, P =0.0001), and dyspnea (−37%, P <0.05). Changes in score from baseline were better with ablation and DDDR/MS pacing for overall symptoms (−48% versus −4%, P <0.005), palpitation (−62% versus −5%, P <0.001), dyspnea (−44% versus −3%, P <0.005), and PGWB (+12% versus +0.5%, P <0.05). DDDR/MS was better than VVIR pacing for overall symptoms (−21%, P <0.05), dyspnea (−30%, P <0.005), and MHI (+5%, P <0.03). There were no differences between algorithms. More patients developed persistent AF with ablation and pacing than with drugs at 6 weeks (12 of 37 versus 0 of 19, P <0.01). Conclusions —Ablation and DDDR/MS pacing produces more symptomatic benefit than medical therapy or ablation and VVIR pacing but may result in early development of persistent AF." @default.
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- W2049014906 date "1999-03-30" @default.
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- W2049014906 title "Prospective Randomized Study of Ablation and Pacing Versus Medical Therapy for Paroxysmal Atrial Fibrillation" @default.
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- W2049014906 doi "https://doi.org/10.1161/01.cir.99.12.1587" @default.
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