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  • Title: [Combined left atrial appendage percutaneous closure and atrial fibrillation ablation: a single center experience].
    Author: Pelissero E, Giuggia M, Todaro MC, Trapani G, Giordano B, Senatore G.
    Journal: G Ital Cardiol (Rome); 2017 Dec; 18(12 Suppl 1):11S-17S. PubMed ID: 29297907.
    Abstract:
    BACKGROUND: We evaluated long-term safety and efficacy of concomitant left atrial appendage (LAA) closure and atrial fibrillation (AF) ablation. METHODS: From February 2013 to June 2017, all patients referred for AF ablation and LAA closure (group 1) were enrolled in the study and compared with a matched control group undergoing AF ablation only (group 2). Pulmonary vein isolation was achieved in all cases with radiofrequency or cryoballoon. LAA was occluded with Watchman or Amplatzer Cardiac Plug or Amulet (ACP) devices. All patients were treated with oral anticoagulation therapy for at least 3 months after the procedure ("blanking period"), and then switched to dual antiplatelet therapy with aspirin and clopidogrel for other 3 months, and then to single antiplatelet therapy with aspirin in case of LAA closure, while group 2 was treated with long-term oral anticoagulation therapy according to CHA2DS2-VASc score. Follow-up was performed with transesophageal echocardiography and clinical visit at 3, 6 and 12 months after the procedure. AF burden was evaluated by loop recorder or pacemaker interrogation in all patients. RESULTS: Overall, 42 patients were enrolled, 21 in each group. Mean age was 66.86 ± 10.35 years in group 1 vs 68.42 ± 10.61 in group 2 (p=NS); mean CHA2DS2-VASc score was 2.8 ± 1.22 in group 1 vs 2.01 ± 0.93 in group 2 (p=NS), mean HAS-BLED score was 3.2 ± 0.83 in group 1 vs 3.1 ± 0.95 in group 2 (p=NS). Persistent AF was present in 80% of patients in group 1 and in 85% in group 2. LAA closure was successful in all cases (14 Watchman, 7 ACP devices). Procedural and fluoroscopy times were shorter in group 2 (68 ± 17 vs 52 ± 15 min, p <0.05; 23 ± 5 vs 18 ± 3 min, p <0.05, respectively). No procedural complications were observed in group 2, while in group 1 one case of self-terminating pericardial effusion and one arteriovenous fistula were observed. At a mean follow-up of 14.93 ± 10.05 months, complete seal of LAA was documented in all patients, with neither dislocations nor thromboembolic events. Similarly, no long-term complications were observed in group 2. Maintenance of sinus rhythm was overlapping, with an AF relapse rate of 36% in group 1 vs 38% in group 2 (p=NS). CONCLUSIONS: Combined LAA percutaneous closure and AF ablation appears to be feasible in high-risk patients.
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