【摘 要】
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Background To investigate the impact of left atrial epicardial adiposity on recurrence of atrial fibrillation (AF) after catheter ablation.Methods From 2009 to 2010, consecutive patients with AF who u
【机 构】
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Department of Cardiology,the First Affiliated Hospital of Dalian Medical University,Dalian,China
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Background To investigate the impact of left atrial epicardial adiposity on recurrence of atrial fibrillation (AF) after catheter ablation.Methods From 2009 to 2010, consecutive patients with AF who underwent circumferential pulmonary vein ablation guided by 3-D mapping system were enrolled in the retrospective study.Left atrial (LA) epicardial fat pad thickness was measured in consecutive cardiac CT angiograms performed for AF.Patients were grouped by AF burden: paroxysmal(n=100), or persistent (n=49) AF.The short-axis view was reconstructed as a plane perpendicular to the long axis of these 2 views at the level of the mid LA.In this short-axis view, the periatrial epicardial fat thickness was measured (in cm) as the shortest distance between the mid left atrium (LA) wall and 3 anatomic landmarks: esophagus (LA-ESO),main pulmonary artery (LA-PA), and descending thoracic aorta (LA-TA) In a short-axis view at the mid LA, periatrial epicardial fat thickness was measured at the esophagus (LA-ESO), main pulmonary artery, and thoracic aorta.The recurrence was defined as atrial tachyarrhythmia lasting more than 30 seconds beyond one month washout period.
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