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- W2003652497 abstract "To evaluate the contribution of the posterior left atrium (LA) to chronic atrial fibrillation (AF). Twenty-seven patients with chronic-AF were studied. After pulmonary vein (PV) isolation, the posterior-LA was isolated by ablation joining the right- and left-PVs using an irrigated-tip catheter. Isolation was demonstrated by absent/dissociated posterior-LA activity and the inability to pace the region. Ablation impact was determined by the effect on cycle length (CL) and AF termination. Posterior-LA isolation was achieved using 35 ± 12 min of radiofrequency with total fluoroscopic and procedural durations of 64 ± 16 and 199 ± 46 min, resulting in abolition of electrograms (n = 21) or autonomous activity (n = 6; CL 820 ± 343 ms). AFCL increased from 156 ± 28 ms to 162 ± 27 ms with PV-isolation and to 175 ± 32 ms by posterior-LA exclusion (P < 0.0001). AF persisted in all after PV-isolation and terminated in 5 (19%) during posterior-LA-isolation. After 10 ± 6 months, 12 patients developed atrial tachycardia (four) or AF (eight); four underwent repeat posterior-LA-isolation, while the others required additional ablation/antiarrhythmics. After 21 ± 5 months, 17 (63%) were in sinus rhythm following posterior-LA-isolation. This study demonstrates the feasibility of complete posterior-LA exclusion by catheter ablation. This strategy results in maintenance of sinus rhythm in 63% at ∼2 years follow-up." @default.
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- W2003652497 date "2007-03-06" @default.
- W2003652497 modified "2023-10-16" @default.
- W2003652497 title "Complete isolation of the pulmonary veins and posterior left atrium in chronic atrial fibrillation. Long-term clinical outcome†" @default.
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- W2003652497 doi "https://doi.org/10.1093/eurheartj/ehl548" @default.
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